Description
Product Overview
The NICHE PW80 crankshaft assembly is a high‑quality replacement part designed for Yamaha PW80 Y‑Zinger and Big Wheel BW80 motorcycles spanning model years 1983‑2006. Manufactured by Mishon Inc., the crankshaft features a polished steel construction that offers superior wear resistance and a smooth surface finish. Weighing only 4.8 ounces and measuring 8.8 x 6 x 4.3 inches, it fits precisely in the front position of the engine, matching the original OEM specifications (part numbers 519‑CCS2232H and 4BC‑11400‑00‑00). The assembly is DOT certified, ensuring it meets stringent safety standards for performance and durability.
Usage
This crankshaft is ideal for riders who need a reliable replacement after wear or damage, as well as enthusiasts restoring classic Yamaha models. It performs optimally in everyday commuting, off‑road adventures, and track days where consistent power delivery is essential. Installation is straightforward for mechanics familiar with engine rebuilds, and the polished finish reduces friction, contributing to smoother acceleration and longer engine life. 
Why Choose Us
Choosing the NICHE crankshaft means opting for precision engineering backed by Mishon Inc.’s manufacturing expertise. Each unit undergoes rigorous quality control, including dimensional checks and DOT certification, guaranteeing a perfect fit and reliable operation. Unlike generic aftermarket parts, this assembly replicates the original OEM geometry, ensuring compatibility with existing engine components and preserving the bike’s intended performance characteristics. Our commitment to customer satisfaction includes responsive support and a clear return policy.
Key Features
- Polished steel construction for reduced friction and extended wear life
- Exact OEM dimensions matching part numbers 519‑CCS2232H and 4BC‑11400‑00‑00
- Front‑position design optimized for Yamaha PW80, Y‑Zinger and BW80 engines
- DOT certified for safety and compliance with automotive standards
- Lightweight (4.8 oz) yet robust, ensuring smooth power transfer
FAQ
Is this crankshaft compatible with all PW80 model years?
Yes, the NICHE crankshaft fits Yamaha PW80 Y‑Zinger models from 1983 to 2006 and Big Wheel BW80 models from 1986 to 1990, covering the full production range.
Do I need special tools to install the crankshaft?
Standard engine rebuilding tools are sufficient. A torque wrench, crankshaft puller, and basic hand tools are typically required for a proper installation.
What warranty does NICHE provide?
The crankshaft comes with a one‑year limited warranty covering manufacturing defects. Contact our support team for claim procedures.
Can I use this part on a modified engine?
The assembly is designed to match OEM specifications. While it will fit a stock engine, significant modifications may require custom adjustments.
How does the polished finish affect performance?
The polished surface reduces internal friction, leading to smoother engine operation, improved acceleration, and potentially better fuel efficiency.




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