- Road Bike Upgrade – Ultegra Di2 or DA 7900?
If you dont get di2 your rather silly,its better.By along shot,and more future proof… and ergonomically more sound.The comparison between the two is massive.Im selling my Mechnical stuff after the national cyclo cross champs this weekend and then Im going electronic on all road and cross bikes.
Having run it on my dads cross bikes with no issues all year and me with dura ace 7900 on mine the and my road bikes.
hope thats useful,let me know if you have any more questions.Posted 5 years agoRealManMember
They’re both really solid group sets – if you’re starting to develop an electric fetish, go Di2. If you’re more interested in stiffness and weight, go DA. Di2 should be more reliable, no need to change cables etc. Although that’s hardly a big job.
The thing that settled my mind when thinking about this was – if I have a crash, and destroy the rear mech – how much is it going to cost to get the bike running again? What if I’m skint at the time?
If you’re mechanical you can easily source a 105 mech or something nice and cheap, and the bike’s running again. But with Di2, you need either an ultegra or DA electronic rear mech. Pricey. Same goes with if you have a crash and you destroy a hood. I’d love Di2, but I don’t like the idea of a few breakable parts being so expensive, and restricting you so much in what you can replace them with.
It is a lovely decision to make though, and you’ll end up with a nice group set whatever. What frame is it going on?Posted 5 years agowhatnobeerMember
Ultegra Di2 is nice, but I would probably go for DA7900. The Di2 didn’t feel quite as quick as I thought it would, but the changes are perfect every time and won’t require any maintenance, where as there will be a bit of faffing with the DA stuff, but it (imo) felt faster when changing gears. Main thing is though, does your bike have internal routing for Di2 stuff? Going to be a PITA if not…Posted 5 years agoFuzzyWuzzySubscriber
I have 7900 on my best bike and it’s OK but in terms of performance (braking and shifting) isn’t any better than the 5600/6600 mix on my winter bike (in fact I prefer the older style Shimano front shifting as it has trim, although apparently 7900 shouldn’t need trim IME it does and I have to put up with it rattling at one end of the block (whichever way I adjust).Posted 5 years ago
I’d probably give Ui2 a go now if I had your choice however the mechs are fugly and as others have said the replacement costs if you crash are eye-watering and you really need to factor that in.
So will this be “current” Ultegra Di2?Posted 5 years agorockfieldSubscriber
DI2 sounds great, but its the replacement costs that put me off. A mate of mine has Dura Ace Di2 on his Colnago. the other week another mate accidently ran into the back of him at a junction and it wrote the rear mech off – £439 to replace ! that would be my bike off the road for months whilst i saved up! However if you can afford it, I reckon why not go for it!Posted 5 years agoswisstimMember
As Mashiehood said…SRAM Red…its better than Ultegra Di2 and Dura Ace 7900. If you are set on Shimano…and that’s not wrong, we all have preferences, then DA9000 is soooo much better than 7900 that it makes it look silly….
But as I have now also said…Red is actually best.Posted 5 years agomudsharkMember
I just got a new bike and chose U Di2 for it – didn’t have a Dura Ace option though. It is very nice but hard to justify the cost over Ultegra really – if you don’t have to justify that’s fine though!
As for SRAM Red – I’m sure it’s fine now but I’ve never seen a roadie have to fiddle with a front mech before; last time I rode with my mate he stopped several times on one ride to adjust his front mech and he is a decent mechanic. Seems the cage isn’t very stiff.Posted 5 years ago
Why the aversion to SRAM Pete? Seems odd to write an option off simply because of who it’s made by?
I’ve just gone through the same decision process and plumped for Red, having never run SRAM on a road bike before. The reasons for the decision were essentially:
1. Cost: can mix and match groups, so I’ve got full 2013 Red drivetrain (the important bit) with Force shifters and brakes until some fab deal comes up. No real weight or performance penalty. As others have said, its easy to swap cheaper/available bits in and out in emergencies too.
2. Aesthetics: the new DA9000 Di2 looks nice, but the other generations of electric shifting look like they’ve been made in someone’s shed. The mechs look horrid and there’s a stupid great battery stuck to your down tube.
3. Weight: Red is lighter than DA7900 and loads lighter than Di2.
4. Function: The only significant advantage of Di2 as far as I can tell, other than the (albeit attractive) novelty value of pressing a button, is the trimming front mech. The new Red mech does the same job in a much more simple, elegant and lighter way.
I’m sure I’ll be tempted by electronic shifting one day, but it just doesn’t do it for me yet. DA9000 mechanical is another story, but would currently have cost me about twice as much to buy.Posted 5 years agoBlazin-saddlesMember
Bol, I’d actually argue that the ONLY bit of Red worth having is the shifters, I’ve have Apex, Rival and Force on various bikes and many have expired early. Think I’m on replacement set 4 on my best road bike due to failure. I’d rather have Red shifters and Force or Rival everything else.
on the flip side the Shimano Dura Ace 7800 shifters on my wifes bike that are 6 years old now are still working like they’ve just come out of the box….Posted 5 years ago
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