Upgrade or build your shaft-driven vehicle with this Reverse Gear Box Transmission Assembly, engineered for reliable forward and reverse operation on 110cc, 125cc and 150cc horizontal engines.
The gearbox features a 6-spline 12mm female input shaft for secure engine coupling and a 20mm output shaft with universal joint connection, delivering smooth and efficient power transfer to the rear drivetrain. The included 16.7 inch (425mm) drive shaft and differential case housing provide a complete rear-drive solution for custom or replacement applications.
Built from high-strength steel with hardened precision gears, this transmission is designed to handle off-road loads, vibration, and continuous operation in ATVs, go-karts, buggies, quads, and utility vehicles. The bolt-on mounting design allows straightforward installation on compatible horizontal engine frames.
Ideal for repairs, drivetrain upgrades, or DIY vehicle builds, this reverse gearbox enhances maneuverability, parking control, and overall drivability.

🔷 SpecificationsProduct Type: Reverse Gear Box Transmission Assembly
Gear Function: Forward / Reverse
Engine Compatibility: 110cc / 125cc / 150cc Horizontal Engines
Drive Type: Shaft Drive
Input Shaft: 6-spline female, 12mm (0.47 inch)
Output Shaft: 20mm (0.79 inch) with universal joint
Drive Shaft Length: 425mm (16.7 inch)
Housing Material: High-strength steel
Mounting Style: Direct bolt-on
Condition: Brand New
🔷 Package Includes1 × Reverse Gear Box Assembly
1 × Drive Shaft (425mm / 16.7")
1 × Differential Case Housing