Compatible with All Versions Razor MX500, MX650 and SX500 Electric Dirt Bikes.25 Roller Chain 132 Link Heavy Duty Chain fit for Razor MX500 Dirt Rocket, Razor MX650 Drive Chain, SX500 Dirt Rocket Drive Chain ,XRF500 MiniMoto. 1/4" (6.35 mm) pitch. 132 pin Compatible with All Versions Razor MX500, MX650 and SX500 Electric Dirt Bikes.25 Roller Chain 132 Link Heavy Duty Chain fit for Razor MX500 Dirt Rocket, Razor MX650 Drive Chain, SX500 Dirt Rocket Drive Chain ,XRF500 MiniMoto. 1/4" (6.35 mm) pitch. 132 pin About the chain：Pre-Assembled, Durable high quality #25 chain with 132 links,Combination of a very high strength base material and an exceptionally hardwearing surface result in significantly increased life，easy to disassemble, reusable,Please clean the chain regularly. About the Chain Tensioner:Razor Replacement Chain Tensioner with Spring for the Razor MX500 and MX650 Dirt Rockets.606 Bearings, Spring and Nut included. Professional after-sales：We sell professional auto parts ，and provide free technical support. If you have any problems or dissatisfaction after receiving the products, please contact us directly to get New Replacement or Return. CNCMOTOK 25 Roller Chain 132 Link+ Razor MX500 MX650 Chain Tensioner，#25 Heavy Duty 132 Link Drive Chain fit for Razor MX500 Electric Drive Chain MX650 Dirt Bike Razor SX500 MiniMoto XRF500