Description
41.4mm Stuffer Crankshaft for Minarelli 50cc Engines
This performance crankshaft is designed specifically for Minarelli 50cc, 2-stroke engines, featuring a 10mm wrist pin. With a 41.4mm stroke that offers an increase of 2.2mm, this stuffer crankshaft boosts primary compression, which is beneficial for engines that operate at higher RPMs. It is one of the Minarelli 50cc / Yamaha jog scooter parts that can improve your engine's performance by optimizing airflow and combustion efficiency.
Increased Primary Compression
The crankshaft is equipped with additional plastic padding that raises primary compression, making it suitable for racing and high-performance applications. Its overall length measures 9 ½ inches, making it a direct replacement for your existing crankshaft. With 17 splines, this part ensures a secure fit within your engine.
Installation Notes
Installation of this crankshaft is straightforward for those familiar with engine work. The flywheel and drive end both have a thread size of M10x1.25, ensuring compatibility with standard components. The inner diameter of the piston pin hole measures 14mm, allowing for a precise fit with the piston assembly.
Specifications
- Stroke: 41.4mm
- Overall Length: 9 ½ inches
- Splines: 17
- Flywheel Thread Size: M10x1.25
- Drive End Thread Size: M10x1.25
- Inner Diameter of Piston Pin Hole: 14mm
- Fits: 40QMB 50cc 2-stroke engines
Fitment
This crankshaft is compatible with Minarelli 50cc engines and is commonly used in various scooter models.
- Minarelli 50cc
Not sure it fits? Contact us with your scooter's make, model and year and we'll confirm the fit before you order.
Shop more: Minarelli 50cc / Yamaha Jog Parts · Scooter Engines & Engine Parts · Scooter Parts
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