CC-4.2 Chain Checker Drop-In Style for 5-12spd incl. SRAM T-Type, Flattop, & Shimano XTR 12spd Black Friday that next level of confidence

that next level of confidence

Unique ‘shake-to-awake’ two-part formula penetrates and cleans deep inside your chain

The result is a race-day tyre with ultimate performance capabilities that can be used for everyday riding

ANT+ and WI-FI

CC-4.2 Chain Checker Drop-In Style for 5-12spd incl. SRAM T-Type, Flattop, & Shimano XTR 12spd Black Friday that next level of confidenceA 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