CC-4: Chain Checker Bivo One 21oz Perfect for when marshmallows aren't

Perfect for when marshmallows aren't the only thing that you want to get toasty

The SRAM Rival 1 Wide Crankset features wider stance of the arms and chainrings to provide clearance for extra wide tires

Trail Evo is a proper automotive grade headlight designed to be front and center on your handelbars

ideal for packing onto handlebars

The Catalyst Pack is made out of recycled polyester and contains roughly 10 plastic bottles rescued from polluted rivers

CC-4: Chain Checker Bivo One 21oz Perfect for when marshmallows aren'tDescription A worn bicycle chain causes poor shifting performance and can actually wear out drivetrain components, causing more expensive problems. The Park Tool CC 4 Chain Checker 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 determining when chain replacement is