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SRAM
X01 2.1 Rear Derailleur

5 out of 5 stars
1 Review
Current price: $137.09 Original price: $230.00
40% off

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X01 2.1 Rear Derailleur

Continuing its tradition of perpetual improvement via incremental refinements, SRAM releases the X01 Type 2.1 Rear Derailleur. Nearly identical in function, weight, and performance to the original, small improvements were made to the derailleur's clutch mechanism and bearings to improve overall performance and longevity, so even if you don't feel the difference right away, you certainly will with time.


The same technologies that make the XX1 rear derailleur so excellent are available in the less-expensive X01. You'll also find bits like SRAM's Roller Bearing Clutch that decreases chain-slap, and its Cage Lock technology that makes removing and replacing the rear wheel a breeze. The proprietary X-HORIZON design makes all SRAM 1x derailleurs unlike typical derailleurs. Most derailleurs are designed such that the knuckle is slanted, versus the side-to-side motion of the X01, which limits the movement to the horizontal axis and makes ghost shifting nonexistent. An offset upper-pulley wheel is also unusual in the design, providing a constant chain-gap through all gear ratios to keep chain tension uniform so prevent binding and slapping. Speaking of, with the combination of the X-SYNC chainring, pulley wheels, and a Roller Bearing Clutch, a chain guide isn't needed with X01. In fact, the chain is tensioned with the derailleur and locked in place with the pulleys and chainring, effectively making dropped chains and missed shifts things of the past.


The Cage Lock technology on the X-HORIZON derailleur adds convenience to your bike maintenance, too. While either installing a new chain, swapping tires, or changing a flat on the trail, you're able to lock your derailleur in place for easy adjustments. Just push the cage forward to create some slack, and lock it into place while you work on your bike. No extra tools are required to make this happen, which makes trail emergencies where you need to remove your wheel a simple fix.


SRAM's X01 Type 2.1 Rear Derailleur is available in the colors Black and Red and is only compatible with SRAM 11-speed XX1, X01, or X1 drivetrains.


Details

  • SRAM's mountain rear derailleur for SRAM elite 1x11 drivetrains
  • X-Horizon technology keeps shifting precise, smooth, and free of ghosts
  • Roller Bearing Clutch controls chain vertical movement on rough terrain
  • Cage Lock improves wheel install and removal efficiency
  • Carbon cage steps up the strength and tones down the weight
  • Sealed cartridge bearings for smooth rolling and lasting performance
  • Item #SRM005G
Material
[hardware] aluminum, [body/cage] carbon fiber, [bearings] steel
Capacity
32t
Cassette Range
10-42t
Gearing
1x
Compatibility
SRAM 1x11 drivetrains
Claimed Weight
8.8oz (250g)
Manufacturer Warranty
2 years