What is the difference between a GS and a rear derailleur?
For your particular gearing range (50/34 compact double and 12-25 cassette), an SS will work. GS is for wider gearing ranges that will result in more chain slack when the drivetrain is crosschained small-small, like on triples or if you are running a very large cassette on a double.
What is the difference between Shimano Ultegra 6800 and R8000?
Weight. Shimano boasts that, “At its lightest set up (Di2 with mechanical braking) Ultegra R8000 weighs 4,071g, which is an 84.5g saving over Ultegra 6800.” Okay, but that 84.5g saving includes wheels and pedals, and many people will already have favourite wheels and pedals.
Is R8000 compatible with 6800?
Worthy of note: the new R8000 components are all cross-compatible with the previous 6800 generation and just about any other Shimano 11-speed mechanical groupset. This means that if you’re on a recent 11-speed Shimano road groupset, you can mix and match many of the components reviewed here.
How do I identify a Shimano Ultegra rear derailleur?
To determine what model you have, look on the back side of the cage. If it’s not stamped there, it is somewhere else on the derailleur. If not, and assuming the entire group is the same vintage, you can find the number on say, the back side of the rear derailleur parallelogram.
Do I have SS or GS derailleur?
Also, regarding the shape of the pulley cage, the GS has a slightly sharper curve than the SS. Sometimes the difference is so small that you can’t tell unless you look at them side by side, but you can tell by looking at them together with the length between the pulleys.
Do Ultegra 6800 chainrings fit 8000?
6800 is compatible w/ 8000, brakes included.
Is ultegra R8000 Di2?
The new Ultegra R8000 series is taking our rider-tuned philosophy to the next level, with an extensive range of components for mechanical shifting, electronic shifting (Di2) and time trial / triathlon.