ITEM NAME:Chain Tensioner Roller Guide 50 70 80cc Motorised Motorized Bike Push Bike Description: - 100% Brand New - Replacement Chain Tensioner for old one - Easy to install - This chain tension-er is assembled by quality bolts clamp with bearing fitted roller. - It suits for 2 stroke 49cc 70cc 80cc motorized push bike Specification: - Max. Length: 122mm/4.80" - Max. Width: 40mm/1.57" - Chain Tensioner Roller Diameter: 45mm/1.77" Package Included: 1 Piece Chain Tensioner Roller Guide.It suits for 2 stroke 49cc 70cc 80cc motorized push bike. 1 Piece Chain Tensioner Roller Guide. - This chain tension-er is assembled by quality bolts clamp with bearing fitted roller. - Easy to install.