Sidi Dominator X XC Clipless Shoes - Mens Black 41.5 MFPN=AAVLR0 M21 rear derailleurs are designed

M21 rear derailleurs are designed to work with 6- and 7-speed Shimano road and mountain shifters

Available Anti-Theft Protection $1750

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spindle bushings separate the bearing inner race and crank spindle to eliminate metal-on-metal contact

Because as far as power transfer goes

Sidi Dominator X XC Clipless Shoes - Mens Black 41.5 MFPN=AAVLR0 M21 rear derailleurs are designedSidi Dominator X XC Clipless Shoes Mens Black 41. 5. Dominator X is built for every off road ride combining all day comfort with rugged performance. The WYVE fabric upper balances breathability and structure reinforced with protective bumpers for added durability. Dual NUUN dials and SIDIs proven instep system ensure a secure fit while the X3CC carbon composite sole with extreme bumpering delivers grip impact protection and efficient power transfer