Fiable, réactif et économique. Mais qu’en est-il à long terme ? The question is whether the difference is worth the money. me back, ive got sneaking suspicion the the only difference in the tiagra 4700 mechanism is 10 teeth on the ratchet instead of 11. as far as my eyes can reach looking in a shop display I cant see any difference in the exposed parts of the mechanism. As things wear, replace them with a higher grade chain and cassette. Unless your derailleur is bent I wouldn’t change it. That would be the first major upgrade for me. All dressed up with tires and cassettes both sets come in under 6 #. Seriously, how practical is that? If your bike shop doesn’t find anything wrong, try having them shorten the chain by one pair of links. The only gain I can see from upgrading needlessly (ie you haven’t knackered something in your existing set-up) is that Ultegra seems to have a certain cache that is lacking from the ‘lesser'(?) I’ll probably stick with 105 on the basis that the 11-speed R7000 version offers a significant upgrade versus the 10-speed 5700 that is on my current Domane. Have you tried both? I would guess you’ll be able to find 10s parts for many years to come. To take a left-field view on all this; people are talking of buying a different sized bike, to get Ultegra, but the most important this is how the bike fits you. Its new Hollowtech crankarms and Hollowglide outer chainring are actually hollow structures that facilitate some of the crispest front shifting in the industry. So I recently picked up a 1991 Cannondale SR800 that is wearing 105 (1055). You pay the same price that you would have done anyway. The difference between BIKE model years is in the frame colors, sometimes the changes in a couple parts, and every so often a major frame redesign (in the specific example the Trek Silque 2017 model has Trek’s “IsoSpeed” decoupler applied to the headtube). The upgrade groupset parts as they become worn out. Does the weight make a difference? I agree with Jack, start with selecting a frame on a good bike. In the case of LJ’s specific example, it’s pretty easy to decide: just ride both and then choose the one she likes more, since she is comparing two complete bikes with different designs. For Road bikes with STI shift/brake levers, there will be differences between the two groups. These are links to online stores such as Amazon, Wiggle and Chain Reaction. The chainring’s shape blends nicely into the body of the Ultegra crankarm. The higher quality the internals, the more precise and longer lasting the mechanism. Assuming you’re working across compatible families, this is certainly possible. If so, I like the 105 bike more. One test I use is to go small/small on the gears – if the chain becomes noticeably slack the chain is too long. Starting with a 105 group is a good idea. As things wear you can upgrade to Ultegra if you want, or you can experiment with changes. I live and ride in the Sierra foothills and San Francisco Bay area, so I can use all the help gearing will give me. The derailleur started as a Ultegra di2 (small cage) which is modified with a Deore long cage. Go to your bike shop and have them check the chain and the derailleur alignment. Tiagra and below, despite being perfectly adequate for your first few sportives (probably all your sportives) and for your daily commute, should be eschewed in favour of 105 or Ultegra as soon as your functional threshold power hits 150W. In reading all these comments one sticks out to me — yesterdays ultegra (i.e. The question though is which groupset should you pick, should you pick Shimano 105 or Ultegra? Where to buy Shimano 105 and Ultegra components:http://tidd.ly/bb708aebhttp://amzn.to/2EuZZgjLet's talk about these components: https://goo.gl/aLujxw But the shifting was better but I was disappointed with the wheels shimano still do cones and cups for wheel bearings, and the cassette freewheel had lots of play . The new Shimano Ultegra groupsets look almost identical to Shimano Dura-Ace, but there are some subtle differences – here's what you need to … If you want to go faster get a bigger engine (legs). The different combos of what might comprise your chosen groupset (e.g disc brakes versus rim) makes trying to come up with a useful summary very difficult. Many are going to disk brakes. If your this has been happening since new possibly the chain is too long or the B screw needs adjustment. The chain became an Ultegra and then the chain and cassette did. When I knackered the front derailleur, I replaced it with the equivalent Ultegra version (10-speed 6700). New ULTEGRA R8000 series is "pro-proven" as it is a direct trickle down from DURA-ACE groupset. I happened to run into a 2015 Cannondale Synapse 3 the other day, for $2150. We’ll break down a number of detailed differences next. The up shifts are stiff and quick. Hope this helps and is only my opinion. That being said I think my 10s can last my lifetime (I’m 65 now) plus many years. Back in the day, there was a big difference in smoothness of shifting, also weight between the groupsets. I’ve done this myself, with my 10-speed 105 5700 groupset. Shimano 105 and Ultegra are 2 of the most often picked groupsets by road cyclists. Suite à la première partie de notre dossier sur les groupes route et triathlon, voici les détails des poids et prix publics conseillés pour les pièces ou groupes complets de ce millésime 2019/2020. Why yes friend, it does. And then the next generation of Dura-Ace and Ultegra came out (i.e. What is your skill level and how much riding will you do? The bike I am looking at is a Pinarello Razha K from 2013 (still new as per the store manager) with 105 5700/Most. The 105’s tend to be less consistent when shifting. If you want to become a Shimano knowledge-sensai, you need to be aware that there is a number that corresponds to each named groupset (okay, need is a strong word). These are also the middle names of my daughters.). In addition, the machining of the ramps on the aluminum cogs of an Ultegra cassette are held to tighter tolerances. For what it’s worth, if you’re looking for a noticeable improvement in shifting quality, a full overhaul at your current groupset (be that 105 or whatever) will give you the best bang for your buck. The spring tension adjust on the other hand yields an advantage with internally routed frames where rear brake “drag” is noticeable. Begin! I’m certainly not elite and with the roads in our area, I ride a Diverge that is 2Kg+ heavier than most road bikes . As we begin to understand what we like and what we don’t like, after that 10,000 shift, we begin to appreciate ulegra and it’s smoothness. Thank you! I have a solution for you: I madez a YouTube on the subject. It came with a full Shimano 105 groupset (5700 – model range number fans). Seems the cost for the Ultegra set is within 20% of getting 105s. Shimano 105 ou ultegra - forum cyclisme velo101. Your next bike: Tri bike? If not then they are likely ok and I wouldn’t change them. If both bikes are new I would take the information to your LBS and see if they would reduce their price 2-300 or if that embarrasses you just get the online one. I agree, when you are ready, or when your bike is ready, make the leap to ultegra. 105 stayed firmly mechanical. We’ll break down a number of detailed differences next. I have been searching for awhile and my head is spinning. Ooh, I seem to be first. That’s another question, and something I’m, going to find out (and REI gives you a few months to try it out, then you can still return it, thus my snapping up the bargain price without having a bike there to try out on the spot-REI is a seriously great company!!). Let’s all make a commitment to lose a pound or two around our bellies. You get some idea of the relative costs though. But I’m deluded and believe that this might make me a better cyclist. That time occurs before you buy your bike, roughly a week after you’ve bought your bike, then on a weekly basis until you cycle off this mortal coil. But the thing is, that all occurred in the previous generation of these two groupsets. See, I told you it wasn’t clear but. there is no difference that would give rise to a different shifting experience in reality (I studied mechanical engineering degree level at university, I have reasonably trained opinion I think). He started Sportive Cyclist in 2013 to record the journey to his first 100 mile ride, the RideLondon 100. They’re available from ‘the internet’ in some cases for less than half the recommended price. Ultegra’s barrel adjuster might simply be nicer from the perspective of a mechanic. Is any of the upgrades worth? Thanks Nick! I assume the bike from the LBS is new and the online one used. Jack thank you so much for you advise, I do greatly appreciate it. And I am not a purist. Both Ultegra 6800 and Shimano 105 R5800 could give 11 speeds and you may get up to five different options in the cassette range. (For completeness, Tiagra is next, followed by Sora and Claris. Well, have a squiz at the full groupset images above. Derailleurs undergo a ton of force, loads and movement. My guess is that your chain is too long, and/or you have a bent hanger or derailleur. Shimano 105 contre Ultegra (trop ancien pour répondre) Eric LAMBERT 2004-08-23 06:42:31 UTC. And then the next generation of Dura-Ace and Ultegra came out (i.e. Shimano didn’t come out with a ‘105 Di2 5870’. Updated with actual weights, deals, price, specs table, and more Do the two extra gears on the 5800 make a lot of difference compared to the 5700.? Also, according to Shimano’s website Ultegra’s wider crankset design permits frame manufacturers to build wider bottom brackets—the part between the pedals inside the frame—and thu… And you end up getting a bike with 105. Chain only showed very little change, but the new chain and cassette had a very noticeable improvement. I am very happy to be corrected, but from my understanding of Shimano, and what I have seen posted here, this year’s Ultegra are next year’s 105 – so the 2017 105 should equal (or exceed?) I have tried this myself and can vouch for it. LJ, yes, still here by default I think. Le groupe Shimano 105 se retrouve souvent sur les vélos de route de classe moyenne. In my experience, the upgrade from 105 to ultegra was significant. An Ultegra chain has a better, nickel-like finish and a stronger riveting process than allows for a laterally stiffer chain. If the online bike seller accepts returns if their description is incorrect and pays return shipping then that is a value in their favor. I’m not a pro rider and I just use my bike for city riding. But two huge advantages. Keep the road Ti, forever. The cassette started as a Deore XT 11-36. Brands group these parts into various different levels. Still have the 105 calipers, so I think that is the only remnant of the original groupset. As we spend more time on the bike and rack up the miles, it makes sense to upgrade assuming your bike fit is dialed in. It might not look traditional hard core but it screams common sense. And yes, Dura-Ace Di2 is R9150 (it doesn’t take an Enigma machine to work out the pattern – although the fact that the prior generation used ’70’ to denote Di2 means perhaps you do need some codebreaking nouse). La nouvelle série ULTEGRA R8000 a été éprouvée sur le circuit professionnel. Now, back to your originally scheduled article…. Thank you for any advise I greatly appreciate it. Has this been happening since new or is it a recent development? L’énorme avantage va être de retrouver une large plage de … Dreraillers had to be changed to match the shifter. My bike is a Trek Domane 4.3 (the 2013 version), which at the time cost £1,800. I ride a 10s but many of the people I ride with have 11s. The overbuilt structure of the crankset coupled with the chainring has far more of an advantage in power transfer over the 105 which doesn’t sport a hollow outer chainring. Is that the case? You are not riding great distances yet, and you don’t want a poorly fitted bike to destroy your riding enjoyment. If you click on an Affiliate Link and then buy something, I get a small commission. Sorry, I missed the part about already having gone through 2 chains when I posted my first reply. Ultegra Di2 et Ultegra normal (le petit frère des Dura-ace, en un peu plus lourd et moins cher.L’équivalent des Force chez SRAM. All from a MAMIL perspective. I am also looking at a Colnago CLX 3.0 Ultegra 2015. Higher quality springs and pivots allow for solid, instant engagement in shifting. En tant qu'élément pour les vélos de route, un fonctionnement sans contraintes est l'une des propriétés les plus importantes pour allier freinage, changement de vitesse et pilotage confortable pendant toute la journée. And like you mentioned you can buy better wheels or frame. I added a road bike to the stable in fall 2015 with 105 on it. I think that by comparing complete groupsets you are doing everyone a disfavor. Whether that’s important, one must judge for oneself. Pedals are lighter, wider, and Shimano bearings have never failed me. The front caliper is nearly hosed, so looking to upgrade, and for $90 shipped I can have Ultegra 8600 calipers. Hello! I’m thinking this is wear on those rear gears. The Cannondale Synapse Carbon 105 2021 model costs £2,200 ($2,838) whilst the Ultegra version is £2,700 ($3,483); Specialized Roubaix Sport (with 105) costs £2,750 ($3,548); the Roubaix Comp (Ultegra) comes in at £3,500 ($4,515). For function or longevity is it worth the price, can’t be as they’re the same. If your chain is at or very close to 0.75% stretched change it. ultegra-change a couple of materials to save a haircut in weight, tiagra-put 10 teeth on the ratchet wheel instead of 11. i’m considering a Cannondale Slate. Considerations on weight but most importantly feel are largely based upon the internal mechanism. Which I suppose makes sense since one is two years old (but is new). I am not certain if I should spend the money now for the upgraded bike. Right now I ride about 20-30 miles 2-3 days a week. What are the tricks and tips for inflating a disc wheel? Presently my bike has a 40 cog with a compact 50-34 crank. I am a beginner/intermediate riding a Specialized Elite 2014 Hybrid. Then another 10 years pass by and it’s time again, the right shifter wasn’t shifting that smooth anymore. The 5700 105, 6700 ultegra shifter design was horribly uncomfortable and the reason I changed. But, by then it was 11 speed all around and the rear fork distance has move out a couple of millimeters. Ultegra derailleurs will yield better shifting and ultimately will last longer. Vous pouvez aussi trouver des « mini groupe », composés uniquement des leviers, des dérailleurs et des étriers de freins. Il n'a donc plus grand-chose à leur envier, si ce n'est la cassette 11 vitesses, puisque ce Tiagra reste en 10 vitesses… If you like to show off with your Ultegra with its shinier finish fine. Well, perhaps a little bit wiser. It’s most helpful in working out which generation of a given groupset you have/you’re buying. The perception of ‘better’ is is always what fuels sales of higher end products. Shimano Ultegra R8000 Groupsets And Build Kits. Also braking performance and feel, which of course is really important over the long haul. Les nouvelles Ultegra reprennent la conception des Dura-Ace, avec un axe en acier et un corps en composite, agrémentés d’une surface d’appui plus large que la version précédente ou que les pédales Shimano d’entrée et de milieu de gamme, afin d’optimiser la stabilité et l’efficacité de pédalage. If Dura-Ace is the top of Shimano’s range of groupsets for road bikes (don’t worry, it is), Ultegra occupies second place in the list; 105 is third. ©2021 Beginner Triathlete. Rather than you changing gear physically by pulling on (or releasing) a cable, electronic shifting uses little motors attached to the front and rear derailleurs in order to make the changes. The Giant Defy is probably the cleanest example of the 105-Ultegra cost differential, with the specifications on the two bikes otherwise being very similar, if not identical. Can anyone comment on how the 2 compare? I sold the old parts. The bike at $1750.00 will have tax added to that price. And like a cyclist in a pan of gradually heating water, you don’t really notice each incremental improvement. Currently I am riding a 20 year old mountain bike on paved trails. This brings the entry price point for a bike with the 105 groupset down considerably. Overall, I would say the Ultegra are comparable to the 10-speed Dura Ace, if not even slightly better (especially braking). I had a Cannondale 2.8 from the mid 90’s. I am trying to choose between a 2015 Cannodale CAAD 10 105 for $1100 or a Cannondale CAAD 10 with Ultegra for $1750. Hey all, Thank you for your contributions. This post might contain affiliate links for which we may make a small commission at no extra cost to you should you make a purchase. With chains and cassettes, the differences are slight but still affect performance. My advice would be to focus on the frame and get as much 105 on there or better at the start, though I believe RS500 cranks are comparable to 105. Speaking to a few data points in the ‘endurance bike’ category (all of which are carbon frames): (For the USD prices, I just converted the UK prices at $1.29:£1 to give an indication. talk of slightly crisper shifting, smoother shifting, faster, easier shifting or difference in durability has me laughing. Now will I ever like Carbon as much as Titanium? Now we find ourselves with R7000 (the current 105) as Shimano’s most recent update (of this higher-end trifecta), and people talking about Dura-Ace being due the next upgrade. So, for instance, in the article, 11 speed first appears in 2012 in Dura-Ace (9000), then a year later in Ultegra (6800), and then two years later in 105 (5800) and has yet to appear in the Tiagra line (presumably the 4800). I write entertaining articles about road cycling: gear reviews, training advice. I will note that my current bike is Ultegra, I got it 2 years back. 105 (la référence. But would change to a 52-36 chainset on my next build. These are just some points to consider. My summer bike is all Ultegra, and my winter bike has 105 shifters, mechs and an RS500 crankset. They update every few years so I just replace them when new sets come out. The same trend is appearing in hydraulic disc brakes and changes to the electronic shifting (current model Shimano hydraulic disc brakes are not attached to any groupset, the first groupset to get its own disc brakes will be Dura-Ace). Can you include more on how these two group sets perform? I have been looking at carbon fiber, Trek, Specialized and Cannondale…there’s so MANY options. Thank you. Tiagra sits above that, followed by 105. Well, I have both – the current iteration of 105 on my Cannondale winter bike and Ultegra on my summer carbon Vitus jobby. Thanks Jack for your comments, I appreciate it! It means a lot of constant shifting and often over two cogs. Very helpful article as I am looking to upgrade from Sora. I’ll certainly be thinking about getting Ultegra on my next bike. You want to take care when buying individual components (e.g. L'ultégra n'a vraiment pas grand chose de plus qu'un 105 si ce n'est "l'effet" gamme supérieure . Also have them check the chain length. I am hoping to increase both miles and how many times per week, possibly to join a riding group as well. => À lire aussi: Comment choisir son groupe de transmission. Shimano Ultegra : la valeur sûre de la marque japonaise SHIMANO. With these facts, you can better make the decision as to if the ~$300 more for the Ultegra group is worth it. This has the potential to maximise comfort and, most importantly, performance far more than by choosing one iteration or another of Shimano’s group sets. A part 400 euros, il y a t'il une grosse différence entre shimano 105 R7000 et ultegra R8000 les 2 groupes pour un amateur comme moi. Thanks for the article, it came at the right time for me as I am looking for a new bike and still ponder between 105 and Ultegra…. Still, it gives the general direction of travel (i.e. That said, if I ever feel that getting electronic gear shifting is an absolute must – perhaps you count yourself in this category –  then clearly Ultegra is the only choice (assuming I/you don’t have Dura-oodles of cash for the top of the range alternative). Shimano brought out a new version of its 105 groupset in 2018, but how does it compare to the top of the range Dura-Ace? An Ultegra lever will shift and brake better and will typically last longer than a 105 lever. No, it will. Yo! Purists might point to a little more finesse in the Ultegra front and rear derailleur, but there’s not much in it. Some misc thoughts: Titanium frames are essentially permanent; ie, there is actually zero measurable loss of resilience over time, especially from the miniscule stresses a bike frame feels, compared to radical loads of say an airplane. All the more so if the new component’s improved performance is held back by an otherwise, ahem, moderately maintained drivetrain. There is your performance increase right there! Ce type de groupe réduit permet de con… This assumes that you are able to go big/big with the shortened chain. There does not seem to be a great deal of difference between the two. I’m also from Yorkshire and therefore have deep pockets and short arms. Its time to cut the crap. Other features (frame, wheelset) can move the price point of the whole range, independent of groupset. Or nicer road bike. 105 stayed firmly mechanical. There has to be a limit to rear wheel spacing and a limit to the number of gears that are useful. One of the biggest improvements with the Ultegra group lies within the crankset. The sole differences I can see are a different plastic material in the bodies (the shape is identical) and composite plastic levers instead of aluminium alloy. If you have to go 105 for the cost, you won’t be disappointed, but it is definitely worth it to think about upgrading the rear derailleur and possibly the levers. Groupe Shimano Ultegra. Make sure the upgraded bike has the full Ultegra group – crankset, bottom bracket, chain, brakes, shifters, cassette. (okay, I couldn’t be bothered to Google what it stands for). Which I am part of neither! Cela comprend, pour un groupe de transmission complet : les dérailleurs avant et arrière, les étriers de frein avant et arrière, le pédalier, la cassette, les leviers de freins, le boîtier de pédalier et la chaîne. I’m sure a scouring of the internet would allow you to add up the weight of each individual component. The better you are and the more you ride the more you would appreciate the upgraded bike. That is how I started. At the time, this was probably at the top end of what you would pay for a carbon frame with 105. Clearly if you want electronic shifting, then Ultegra is, for now, your only option. The extra spread is useful as I have an 11-32 rear cassette with a compact 50-34 chainset Devon hills are not very forgiving. Ultegra components are also stiffer, meaning that the bike doesn’t “flex” under the load of hard pedaling, wasting energy. Regarding 10s vs 11s you likely won’t notice a difference. 105 weighs 200g more, all else being equal), which in the grand scheme of anything other than pro cycling is kind of irrelevant. It is easy to change a couple of components later to make the bike feel like a larger size. I subsequently found a decent deal on used Di2 electronics and was able to slap them on. I’ve had a go at summarising the supposed recommended prices for the various current (R8000/R7000) Ultegra and 105 options in this table. Shimano 105 R7000 groupset — everything you need to know. Désormais, vous pouvez aussi opter pour des freins à disque hydrauliques. Do you think it would be worth it? The Zipps are 2 oz heavier than the DAs. The origin story of the term Di2 is shrouded in mystery…. I have an aluminum Specialized and now upgrading to carbon. Whether a bike has disc or rim brakes affects price quite considerably. Shoot me down if you like, but I’m erring towards the 105 in terms of looks. So it was a 35£ side grade. There is zero difference in any of the moving parts in shape or function. There are a lot of new bikes out there with 30 and 32 tooth largest cogs. Before changing anything I would look for the real problem. I just did this on my Domane – new cables, cassette, chain, brake pads and chain rings – recorded in this series of YouTube videos – and the improvement has been amazing. A groupset is a component manufacturer’s collection of mechanical parts, usually covering the derailleurs, shifters, brakes, chainset, bottom bracket, cassette and chain. Any help or advise is greatly appreciated. Subscribe below and I will send you enjoyable and helpful cyclo-info straight to your inbox. Want to know whether you should upgrade from 105 to Ultegra but can’t be bothered with all these pesky words? Learn how your comment data is processed. If you click on an Affiliate Link and then buy something, I get a small commission. Shimano Ultegra R8020 Hydraulic Groupset. I’ve only tried a couple of rides with them and find they accelerate quicker than the DAs but climbing is about the same. Don’t worry though (who you calling worried? Le budget n'étant semble t'il pas une question pour toi alors oui fais toi plaisir avec un Ultégra . When it comes to purchasing a gift for our babies, nothing says I love you like a new groupo. So now is the time to consider whether upgrading from Shimano 105, a perfectly functional bike groupset, to Shimano Ultegra, a perfectly functional bike groupset, will take you from dog-dog to Froome-dog. If you click and buy something, I get a commission, at no extra cost to you. For both, you will need to add a freehub to ensure that … Again a value to the LBS. If the upgraded bike is 11s and the online one 10s there is a slight value to the LBS bike. Moving up to the controls, the new Shimano 105 R7000 hoods and levers get the same ergonomic do-over that Ultegra R8000 received. Le pédalier Shimano FC-5800 délaisse l’architecture à cinq branches pour celle à quatre branches héritées des groupes Ultegra et Dura-Ace, plus légère et plus rigide. Spend the money you save by upgrading the wheelset. I appreciate your comments . Interesting and thoughtful comment. Then I probably bought an Ultegra cassette and maybe an Ultegra 10-speed chain (my memory is a little hazy). In the big picture, the Ultegra group is 220 grams lighter (which is a little more than ½ a pound) and costs $300 more than the 105 group. Architecture 4 branches pour le pédalier Shimano 105 5800. The frame geometry, design, and sizing/fit is going to matter more than the components (which is not that much weight and mostly the finish), the only exception is that if the Cannondale Synapse happens to be a disc brake version (in 2015, Canondale made both in the Synapse line). The dents also reveal how many carbon frames might have been trashed in those years. Where Do Tiagra and 105 Sit In The Shimano Range? Ultegra components are lighter than 105 components, making climbing easier. The Zipps are deep dish carbon. New bike it was. Brake pad quality is another significant factor in the performance of Ultegra brakes over 105. Since you're here, Monty would also like you to check out. Fatigue would show as a ‘set’ as a permanent sag, simply not there at all. There was no improvement in performance but the fun factor increased. I can tell the components aren’t as “shiny” but almost felt more at home with the 105. When you are due for chain and cassette replacement switch to ultegra. I had to have the front retuned about 750 miles ago. None the wiser, that’s where. There has been plenty of discussion here on the differences (or non-differences) in components, so whether there is any genuine performance difference between the two product lines is a matter for conjecture. Thanks Andrew. bonjour à tous, une question certainement déja abordée, mais je n'ai pas trouvé de post à ce sujet. Any opinions? I started my search last year and it was so overwhelming I just said forget it. Apparu en juin 2015, le Shimano Tiagra (séries 47000) adopte le même style esthétique que le 105, l'Ultegra ou le Dura-Ace, grâce à l'arrivée d'un pédalier à quatre branches. Yup you’re exactly right but I there’s one thing to keep in mind with “keeping a frame forever”. You pay the same price that you would have done anyway. If they both seem about the same goes with the smaller size. Thank you for your reply. With the Ultegra’s, it is almost always an immediate shift and just enough feedback to know it went, but not enough to be annoying. OK, it was aluminum, but I don’t ride that hard to cause frame issues : ) After 10 or so years I upgraded from low end 105 to Ultegra and things were excellent. But it will be interesting to compare the two. But also, friend, it doesn’t matter. $990.73 - $1,311.11. you could be deluding yourself because you spent all that extra money and would feel a fool if there was no functional difference. Troisième dans la gamme du géant nippon, le Shimano 105 est un groupe fiable qui se place, à chaque nouvelle mouture, comme un produit de plus en plus attractif, et ce pour moins de 700 euros (en version classique à patins). That was many words, but I missed the part of describing how 105 performs differently from Ultegra apart from the weight. Shimano va avoir un problème avec de 105 di2. Ultegra offers better brake pads, better component quality. Most of the change allows closer gearing in the middle of the cassette. The 105 updates are great. Of the the articles on the web, this one answered my question best about whether or not I’d made a mistake by purchasing a new Cannondale Synapse with 105 after 24 years of riding two bikes that had, in succession, a 1993 model bike with Shimano 600 (which I believe became Ultegra the next year) and just plain Ultra on my 2004 model bike.

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