101 Octane 4-Stroke Crankshaft - BT7001-22

The 101 Octane Crankshaft is a high-quality aftermarket replacement designed for 50/90cc 4-stroke engines, specifically the GY6 50 (139QMB/QMA) series. This crankshaft comes pre-pressed with main bearings and a connecting rod for ease of installation.

Description

This 101 Octane crankshaft is engineered as a direct replacement for GY6 engines. A key feature is the 22-tooth oil pump drive sprocket, which is essential for newer GY6 engine models, including Rex models. Ensure compatibility by counting the teeth on your existing oil pump drive cog before ordering. If you have an older 16-tooth variant, this crankshaft can still be installed, provided you also install oil pump BT14782 and oil pump drive cog BT14783. With proper installation, this crankshaft will restore your engine's performance and reliability. Get the 101 Octane Crankshaft for your 139QMB/QMA engine today.

Features & highlights

• Direct replacement for GY6 50 (139QMB/QMA) engines.
• Pre-pressed with main bearings and connecting rod for straightforward installation.
• Features a 22-tooth oil pump drive sprocket, compatible with newer GY6 models.
• Can replace 16-tooth variants with additional oil pump and drive cog installation.
• Restores engine performance and reliability.

Technical specifications

• Brand: 101 Octane
• Product Name: Crankshaft
• Compatibility: 50/90cc 4-stroke GY6 50 (139QMB/QMA) engines
• Oil Pump Drive Sprocket: 22-tooth

Important to know

If your engine uses a 16-tooth oil pump drive, you will also need to purchase and install oil pump BT14782 and oil pump drive cog BT14783 to use this crankshaft.