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Features sram jockeys derailleur xx1 blackbox ceramic
Ceramic rollers for 11V.
The SRAM Black Box changeable pulleys are made of the same material as standard pulleys, but have polished stainless steel rings and ceramic balls inside a hermetic unit. Thanks to the ceramic balls, the pulleys are a little bit lighter and more durable, but the most important thing is that they have much less friction than the usual stainless steel balls. & Nbsp;
Features:
- Compatible with SRAM X0 rear derailleur.
- Approximate weight: 24gr (pair).
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