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Yamaha Genuine XJ600 XS400 Rear Chain Puller Adjuster 12R-25388-00
Yamaha Genuine XJ600 XS400 Rear Chain Puller Adjuster 12R-25388-00
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Product Description
Yamaha Genuine factory right-hand/left-hand rear wheel chain tensioner puller block (PULLER, CHAIN 1). Stamped from heavy-gauge, zinc-passivated steel plate with an integrated axle collar slot, this OEM chain adjuster slides directly over the rear wheel axle end inside the swingarm cutouts to enable precise drive chain tensioning and rear axle alignment on 1980s street and sport models.
Vehicle Compatibility
Standard Genuine replacement fitment for Yamaha 1980s 400cc–600cc street and sport platforms:
| Make | Model | Chassis / Engine Variant | Model Years |
| Yamaha | XJ600 / XJ600H / XJ600N | 51J / 3KM / 3KN | 1984–1991 |
| Yamaha | XS400 / XS400K / Seca 400 | 12E / 12R / 15G / 10F | 1982–1983 |
| Yamaha | FJ600 / FJ600N | 49A / 49B | 1984–1985 |
| Yamaha | XS250 / XS250 Special | 17E / 3479 | 1982 |
Fitment & Technical Details
Mounts directly inside the rear swingarm axle slot over the rear wheel axle spindle. Threaded adjuster bolt pushes against the swingarm end cap to set correct drive chain slack and maintain proper rear wheel tracking.
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.