Yamaha Genuine PW80 Rear Sprocket 21W-25432-10-33
Yamaha Genuine PW80 Rear Sprocket 21W-25432-10-33
Low stock: 1 left
Couldn't load pickup availability
Product Description
Genuine Yamaha factory replacement rear driven sprocket. Manufactured from high-strength hardened steel with precision-hobbed tooth profiles designed to minimize chain friction, reduce wear elongation on the drive chain, and transfer power efficiently from the transmission countershaft. Built to exact factory metallurgy standards and concentricity tolerances to prevent runout and vibration during off-road final drive operation.
Vehicle Compatibility
Engineered explicitly for the Yamaha PW80 Y-Zinger and BW80 (Big Wheel 80) air-cooled 2-stroke off-road platform.
Verified catalog fitment layout:
| Make | Model Family | Engine Type / Displacement | Model Years |
| Yamaha | PW80 Y-Zinger | 79cc (Air-Cooled 2-Stroke Single) | 1983–2006 |
| Yamaha | BW80 (Big Wheel 80) | 79cc (Air-Cooled 2-Stroke Single) | 1986–1990 |
Fitment & Technical Details
Direct OEM bolt-on replacement component. Installation requires removing the rear wheel assembly, unbolting the old sprocket from the rear wheel hub carrier, and inspecting the hub cushioning dampers and fastening studs for wear or thread stretching. Always install new self-locking nuts or use high-strength threadlocker on the sprocket bolts. Torque all retaining fasteners evenly in a criss-cross pattern to factory workshop specifications, and verify final drive chain alignment and tension post-installation.
Important: Please ensure the part number matches your motorbike before purchasing. If you have any questions about the part or its compatibility, feel free to contact us. We’re here to help!
At Dmmotorcycles, we’ve specialized in vintage and vintage sports motorcycles and parts directly from Japan since 1998. We stock a wide selection of rare genuine and high-quality aftermarket parts and continually update our inventory to meet growing demand.
Looking for a specific part? Don’t hesitate to ask! We may have it in stock even if it’s not listed online. If not, we’ll do our best to source it for you.
We’re also happy to provide guidance on installation and offer excellent after-sales support to ensure your satisfaction.
Shipping Information
We ship worldwide, carefully inspecting and securely packing all parts to ensure safe delivery. Your order will be insured and shipped quickly, with the best available shipping option chosen for speed and reliability.
Please note:
- All parts are shipped from Cyprus (Europe).
- Customers outside the EU may incur additional import taxes based on the value of the item.
How we handle your order in 4 steps
-
1. Order Verification
We confirm the order and make sure the correct part number, quantity, and any special requests match what’s on the sales confirmation
-
2. Quality Check
Since our parts are new old stock we Inspect the parts for any defects, scratches, or missing components to ensure it meets quality standards. otherwise will notify you before proceeding with the order.
-
3. Safe and Secure packaging
- Protective Wrapping: We use bubble wrap or foam padding to wrap the part, focusing on sharp edges or delicate components.
- Boxing: We place the wrapped part inside a sturdy box, filling gaps with packing materials to prevent movement.
- Sealing and Labeling: Securely tape the box and attach the shipping label, including orientation-specific markers like "Fragile."
-
4. Finalizing of Shipment
We confirm the shipping address and contact details, give the package to the Post, keep the tracking number, and then send it to the customer along with the shipment notification.
