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The Silent Xring Pulley dampens the chain impact on the guide pulley teeth eliminating the engagement noise
42 pin placement options
From the Dissector Troy Brosnan wanted to create a "unicorn tire" a center tread design that carried speed easily but with edge blocks worthy of world-class cornering speed
Ring Position/Type Chain Retaining Single RingTooth Count 50Drivetrain Speeds 12Round or Oval RoundChainring BCD 110 Shimano AsymmetricMaterial AluminumColor BlackDefined Color Black
Cateye HR-12 Heart Rate Sensor MFPN=IFCR7000EXXL The Silent Xring Pulley dampensCateye HR 12 Heart Rate Sensor. CatEye Stealth 50 Heart Rate Strap and Sensor.
US$ 16.99
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US$ 17.99
