101 Octane 4-Stroke Crankshaft - BT7001-16

The 101 Octane Crankshaft offers original equipment (OE) quality for 50cc and 90cc 4-stroke engines, specifically the GY6 50 (139QMB/QMA) engine platform. This crankshaft arrives pre-pressed with main bearings and the connecting rod already installed, simplifying the installation process.

Description

This 101 Octane crankshaft is designed as a direct replacement for the original equipment, ensuring a seamless fit and reliable performance. One crucial detail to verify before ordering is the oil pump drive cog configuration. GY6 engines utilize two different versions of crankshafts, distinguished by the number of teeth on the oil pump drive cog located on the right-hand side. This particular crankshaft features the older, more common 16-tooth cog. If unsure, always count the teeth on your existing crankshaft to ensure proper compatibility and function. Using the wrong crankshaft can cause issues with the oil pump, potentially damaging the engine. This high-quality aftermarket crankshaft will restore your engine's performance and reliability.

Features & highlights

• Direct replacement for GY6 50 (139QMB/QMA) engines.
• Pre-pressed with main bearings and connecting rod for easy installation.
• Features the commonly used 16-tooth oil pump drive cog.
• Ensures proper oil pump function and engine lubrication.
• Manufactured to original equipment (OE) quality standards.
• Ideal for restoring performance to your 50/90cc 4-stroke engine.

Technical specifications

• Brand: 101 Octane
• Product Name: Crankshaft
• Compatibility: 50cc/90cc 4-stroke engines (GY6 50, 139QMB/QMA)
• Oil Pump Sprocket: 16-tooth

Important to know

Verify the number of teeth on your existing crankshaft's oil pump drive cog (located on the right-hand side) before ordering. This crankshaft features a 16-tooth cog. Using the incorrect crankshaft may lead to improper oil pump operation and potential engine damage. If your engine requires a 22-tooth cog, this crankshaft will not be compatible.