Gy6 50cc Clutch Set And Variator Kit With 669 Belt For 139QMB Short Case Engines Go Kart Scooter Street Ready Upgrade Pack Including Front And Rear Clutch Assemblies

Gy6 50cc Clutch & Variator Kit with 669 Belt Upgrade Pack
✔️ Includes rear and front clutch assemblies with 669 belt.

Designed for 4-stroke Gy6 50cc engines with a short-case, this upgrade kit fits most Chinese scooters, go-karts, and street bikes. It includes front and rear clutch assemblies plus a 669 belt to boost drive performance and longevity.

✅ Rear Clutch Assembly: Bell OD 115mm; ID 105mm; Splines 22 tooth
✅ Front Clutch Assembly: Drive face hole diameter 14mm; Overall diameter 90mm; Roller 16x13mm
✅ Belt: 669 x 18.1 high heat-resistant belt for durability

💡 What does a clutch and variator kit do for Gy6 short-case engines?

Handy upgrade for daily driving and improved take-off. - improves take-off torque with optimized clutch engagement - reduces belt slip for smoother acceleration - extends belt life due to high-heat belt