CC-4.2 Chain Checker Drop-In Style for 5-12spd incl. SRAM T-Type, Flattop, & Shimano XTR 12spd Black Friday ANT+ and WI-FI

ANT+ and WI-FI

or hangout into a statement

the REACTO 4000 is far from an entry-level bike

that next level of confidence

It has a tacky finish which adds a sticky non-slip surface with a raised texture giving you extra grip in all weather conditions

CC-4.2 Chain Checker Drop-In Style for 5-12spd incl. SRAM T-Type, Flattop, & Shimano XTR 12spd Black Friday ANT+ and WI-FIA worn bicycle chain causes poor shifting performance and can actually wear out drivetrain components, causing more expensive problems. The Park Tool CC 4. 2 Chain Checker is a drop in style gauge that measures bicycle chain wear. The laser cut CC 4. 2 accurately measures a long section of chain and strategically comes in contact with the chain in three places, quickly and easily taking the guesswork out of determining when chain replacement is