Parktool- Chain wear indicator Tubes BRAKES: Mechanical disc with 160mm

BRAKES: Mechanical disc with 160mm rotors

Rear derailleur- SHIMANO Ultegra Di2 RD-R8150 12spd

180/F and 160/R

LX & SLX 9 speed MTB rear mechs

Parktool- Chain wear indicator Tubes BRAKES: Mechanical disc with 160mmA worn chain shifts poorly and wears sprockets at an accelerated rate. The CC 3. 2 is a go no go gauge designed to accurately indicate when a chain reaches . 5% and . 75% stretch, the points at which most chain manufacturers suggest replacement. For 9 and 10 speed chains, replace the chain just as the gauge fits the 0. 75% side fits flat into the chain. For 11 and 12 speed chains, replace the 0. 5% side fits. The CC 3. 2 is long, accurate, and