Park Tool Chain Checker Bicycles Integrated camera window

Integrated camera window

Tested at World Cup downhill races and white-knuckle summer Morzine laps

Very compact and therefore well suited for small frames

eliminating the need for a mess of loose tools

Front Derailleur: FD-M9000

Park Tool Chain Checker Bicycles Integrated camera windowThe CC 4 is a drop in style gauge that measures bicycle chain wear. The laser cut CC 4 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 knowing when chain replacement is necessary. A worn chain will cause poor shifting as well as accelerate drivetrain wear. The tool works on any 5 to 12 speed derailleur chain (including SRAM AXS) and is