Yamaha Genuine Passol II Drive Shaft Assembly 25K-17420-00
Yamaha Genuine Passol II Drive Shaft Assembly 25K-17420-00
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Product Description
Brand new official Yamaha factory complete drive shaft assembly designed for classic vintage 50cc two-stroke scooter final transmission units. Precision-machined from high-grade alloy steel with induction-hardened gear seating and spline surfaces, engineered to handle final reduction torque loads reliably, eliminate drivetrain lash, and restore factory-smooth rear wheel power transmission during comprehensive engine and transmission restorations.
Vehicle Compatibility
Engineered explicitly for Yamaha classic air-cooled two-stroke micro-scooter platforms.
Verified catalog fitment layout:
| Make | Model Family | Engine Type / Displacement | Model Years |
| Yamaha | Passol II (SA50 / 25K series) | 50cc (Air-Cooled 2-Stroke Scooter JDM) | Early 1980s–1985 |
| Yamaha | Related Early JDM 50cc Scooter Variants | 50cc (Air-Cooled 2-Stroke Scooter) | Early Era |
Fitment & Technical Details
Inspect transmission case needle bearings, internal bronze bushings, and final gear teeth for pitting, wear, or metal debris contamination before installing the new shaft. Ensure proper shimming and axial end-play adjustment per the factory service manual. Clean and repack the final gear housing with high-grade hypoid/transmission gear oil upon reassembly.Verification: Rotates true within the crankcase/transmission cover bearing bores with zero radial play or binding, ensuring seamless torque transfer to the rear wheel hub assembly under load.
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
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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
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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.
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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."
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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.
Contact DM Motorcycles
Having trouble finding the motorcycle part you need? we'll personally help you locate the right part and get you back on the road.
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