Beefed Up 420 Chain With 102 Links And Heavy Duty Chain Roller Tensioner Kit For 50cc To 140cc Dirt Bikes Pit Bikes ATVs And Go Karts Fits CRF50 XR50 PW80 SSR Tao Tao Coolster Kazuma Baja Ice Bear Lifan And More

Heavy-Duty 420 Chain & Roller Tensioner Kit (50-140cc)
✔️ Kit includes 1x 420 chain (102 links), master links, tensioner, rollers

Upgrade your ride with a complete upgrade kit that pairs a robust 420 chain (102 links) with a heavy-duty chain roller tensioner. This all-in-one solution is designed for 50cc to 140cc dirt bikes, pit bikes, ATVs, and go-karts, delivering smoother operation and longer drivetrain life.

✅ 420 chain with 102 links (51 internal, 51 external) for reliable sprocket fit
✅ 15mm inner diameter mounting bushing ensures smooth drivetrain integration
✅ Heavy-duty roller tensioner with upgraded spring and longer travel for durability
✅ Includes 1x 420 chain, 12 master links, 1 chain breaker, 2 rollers, 1 bracket, 1 clip spring, 1 screw, 1 washer
✅ Fits 50cc-140cc dirt bikes, pit bikes, ATVs, and go-karts; verify model compatibility

💡 What is a chain tensioner kit used for in small-engine vehicles?

A handy overview to explain its value across many bikes. - Keeps chain properly tensioned to prevent slipping and wear - Improves power transfer and reduces chain slap under acceleration - Works with 420 chain and standard sprockets on 50cc-140cc platforms - Simple install with included hardware