Yamaha Genuine YA6 Crank Pin 137-11681-01
Yamaha Genuine YA6 Crank Pin 137-11681-01
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Product Description
Yamaha Genuine factory crankshaft connecting rod pin (PIN, CRANK). Precision-machined, high-strength hardened steel crankpin engineered under the 137 model prefix code for classic mid-1960s Yamaha 125cc two-stroke rotary-valve engines. Designed to handle high shear loads connecting the flywheel flywheels and connecting rod small-end bearing. Manufactured in Japan under strict Yamaha OEM standards.
Vehicle Compatibility
Verified catalog fitment for mid-1960s Yamaha vintage street and rotary-valve platforms:
| Make | Model | Chassis / Engine Variant | Model Years |
| Yamaha | YA6 / YA6 Gran Prix | 125cc 2-Stroke Rotary-Valve Single (137 Series) | 1964–1966 |
| Yamaha | YDS3 / Catalina | 250cc 2-Stroke Twin (137-matched variants) | 1964–1966 |
Fitment & Technical Details
Direct factory OEM replacement crankpin. Requires professional press-fit installation and truing setup within the crankshaft flywheels using a dial indicator to ensure zero runout before reassembly into the crankcase.
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.
