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SRAM
X0 Type 2 Rear Derailleur

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X0 Type 2 Rear Derailleur

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. Another benefit of the Cage Lock is that it makes chain installation a bit easier; you don't have to maintain a consistent pulling force on the cage while joining the two chain ends.

SRAM's Exact Actuation Technology facilitates consistent shifting through all gears, including the 36-tooth rear cogs being produced for 29ers. SRAM uses sealed cartridge bearings in the pulleys of the X0 Type 2 for smooth action and long-term durability. Lower-end SRAM models use bushings in place of these bearings. The outer plate of the X0 Type 2 cage is made of carbon fiber to shed weight. The SRAM X0 Type 2 Rear Derailleur comes in Black/red and in 3 cage lengths: Short, Medium, and Long. SRAM suggests the short cage for downhill use, Medium cage for 2 x 10 set-ups, and Long cage for 3 x 10 set-ups.


Material
[body] aluminum, [outer cage plate] carbon fiber
Speeds
10
Capacity
36 t
Compatible Components
SRAM
Recommended Use
cross country, all-mountain, downhill
Manufacturer Warranty
2 years

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