Park Tool CC-4.2 Chain Wear Indicator izyrent With unparalleled capability

With unparalleled capability

Quick Fold Mechanism (QFM)

KICKR's 16lb high-inertia flywheel uses progressive algorithms to better replicate the sensation of riding outdoors on an indoor bike trainer

Bleed block for all Shimano flat bar hydaulic brakes (2 or 4 piston type)

Park Tool CC-4.2 Chain Wear Indicator izyrent With unparalleled capabilityA 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