SRAM PC850 7/8spd Chain Length & Colour:114 link (grey) 48TBolt Circle Diameter (BCD): 107

48TBolt Circle Diameter (BCD): 107 BCDSpeeds: 12Compat - Yaw: n/aMaterial (Chainring): AluminumColor (Chainring): Black

while well-distributed air ventilation holes aid temperature regulation and breathability

Designed specifically for the Trek Powerfly FS models

Introducing the TREK 2021 POWERFLY FS ALUMINUM CHAINSTAY - the perfect solution to get you back on the trails in no time

Questions and video viewings welcome

SRAM PC850 7/8spd Chain Length & Colour:114 link (grey) 48TBolt Circle Diameter (BCD): 107Extremely strong. Incredibly precise. SRAM's PowerChain II increases front and load shifting performance without sacrificing rear shifting precision. The Step2 riveting process increases the Push Pin Power for increased strength and durability. THINGS TO REMEMBER An equally smooth operator on city bike paths and country trails PowerLink "no weak link" technology lets you insert, press, and lock to join links. No tools needed