The SRAM X0 Type 2 Rear Derailleur is the highest-end offering from SRAM to get the Type 2 treatment. It's worth looking at if you have trouble with dropped chains, but a roller-style chainguide doesn't fit with your light-and-efficient setup. SRAM incorporated a clutch mechanism into its Type 2 derailleurs to control chain tension and stabilize the rear derailleur cage; this limits chain slap and keeps the chain from derailing on technical trails.Shimano's Shadow Plus design, which is engineered to produce a similar chain-stabilizing effect, preceded SRAM's Type 2 design in reaching the marketplace. However, Type 2 technology differs from its competition in a key way. Rather than opting for an adjustable friction band, SRAM put a Roller Bearing Clutch in their Type 2 derailleurs. The clutch comes pre-set from the factory to provide a certain amount of friction inside the derailleur cage pivot. This friction keeps the cage from bouncing up and down over rocky trails and de-tensioning the chain. Because it's pre-set at the factory, SRAM's Type 2 clutch can't be disengaged or adjusted like Shimano's Shadow Plus mechanism. That being said, the Type 2 clutch is self-lubricating, and there are no external moving parts, so unlike the Shadow Plus system, it's designed to be maintenance-free. The Type 2 mechanism adds about 30 grams to the weight of a standard X0 rear derailleur. A unique feature of the Type 2 system is that its Cage Lock technology allows you, with the push of a button, to lock the derailleur cage in an extended position. While it may not be a game changer, this is a nice feature that allows for easier-than-ever rear wheel installation. There's no need to worry if you accidentally leave the derailleur cage locked; it will return to normal operating position when you hit your first bump.
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I just wanted to confirm that you can absolutely run the new sram xx1 crankset with an entire sram 10 speed drive train.
Sram XX1 crankset
Sram XX shifter / brakes
Sram X0 type 2 rear derailleur (medium cage)
PC-1071 hollow pin chain
Shimano XT 11-36 cassett ... Read More »
I would like to summarize here for everyone's benefit the interchangeability/ compatibility of SRAM XX, X0, X9 and X7 shifters and rear derailleurs- 10 SPEED.
Which rear derailleurs work with which rear shifters and possibly what is the actuation ratio..
(Example: SRAM AA rear derailleur works ... Read More »
Are they any? Can you use a 10 speed shifter with the 9 speed version on a 10 speed cassette?
Specifically, can someone confirm if I can use my 10 speed XT Dynasys shifters with a short cage XO 9 or 10 speed rear derailleurs? It looks like it will work with a 9 speed according to various sources, ... Read More »