125CC PIT BIKE ENGINE SEMI AUTO W/REVERSE, COMPLETE RUNNING ENGINE PACKAGE, CARB & ELECTRICS INCLUDED
125cc pit bike engine semi auto with reverse. Complete running engine package including gear lever, carb and manifold, and all electrics and switches. Features electric start. Specifications: displacement 119.7cc, max power 8HP @ 7500 RPM, max torque 8.5NM @ 5000 RPM, compression ratio 9.0:1, bore & stroke 52.4mm x 55.5mm. Engine oil capacity 900ml, 15W/40. Requires break-in procedure: 10 minutes at idle, 15 minutes riding at up to 1/2 throttle, 15 minutes riding at up to 3/4 throttle. After break-in, recommended to change oil and perform a full engine check.
- SKU
- 56-E101
- Brand
- No Brand
- Availability
- In Stock (2)
FULL DESCRIPTION
125CC Semi-Automatic Pit Bike Engine with Reverse - Complete Package
Upgrade your pit bike, monkey bike, or ATV with this powerful and versatile 125CC engine. This complete running engine package features a semi-automatic transmission and the convenience of reverse gear, making it ideal for a wide range of applications.
Key Features:
- Engine Size: 119.7CC displacement for robust performance.
- Transmission: Semi-automatic for easy shifting.
- Reverse Gear: Added functionality for maneuverability.
- Electric Start: Convenient and reliable starting.
- Included Components: Comes complete with a gear lever, carburetor and manifold, and all necessary electrics and switches.
- Performance: Delivers a maximum power of 8HP at 7500 RPM and a maximum torque of 8.5NM at 5000 RPM.
- Engine Specifications: Features a compression ratio of 9.0:1, with a bore and stroke of 52.4mm x 55.5mm.
- Oil Capacity: Requires 900ml of 15W/40 engine oil.
Important Break-In Procedure:
To ensure the longevity and optimal performance of your new engine, a break-in procedure is essential. Please follow these steps:
- Run the engine at idle for 10 minutes.
- Ride the vehicle for 15 minutes, not exceeding 1/2 throttle.
- Ride the vehicle for 15 minutes, not exceeding 3/4 throttle.
After completing the running-in procedure, it is highly recommended to change the engine oil and perform a full check of the engine components.


