Piaggio Genuine Gilera Runner / NRG Purejet 50cc Crankshaft 8269405
Piaggio Genuine Gilera Runner / NRG Purejet 50cc Crankshaft 8269405
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Product Description
Brand new official Piaggio factory complete crankshaft assembly designed for high-output 50cc liquid-cooled two-stroke scooter platforms (including Purejet fuel-injection and Hi-PER2 Pro configurations). Forged and dynamically balanced to strict Italian metallurgical and rotational tolerances, engineered to eliminate high-RPM vibration, maintain primary drive alignment, and ensure maximum bottom-end reliability during a complete engine rebuild.
Vehicle Compatibility
Engineered explicitly for Piaggio, Gilera, and Aprilia liquid-cooled two-stroke 50cc scooter platforms.
Verified catalog fitment layout:
| Make | Model Family | Engine Type / Displacement | Model Years |
| Gilera | Runner 50 / SP / Purejet (LC 2T) | 49cc (2-Stroke Liquid-Cooled Hi-PER2 Single) | 1997–2012 |
| Piaggio | NRG 50 / Extreme / Power / MC2 / MC3 / Purejet | 49cc (2-Stroke Liquid-Cooled Hi-PER2 Single) | 1997–2012 |
| Aprilia | SR 50 R Factory / DiTech (Piaggio 2T LC Engine) | 49cc (2-Stroke Liquid-Cooled Single) | 2004–2014 |
Fitment & Technical Details
Inspect main bearing seats, oil seal journals, and flywheel woodruff keyways for absolute cleanliness prior to assembly. Warm the aluminum crankcase halves evenly and press the new crankshaft assembly squarely into position without side-loading or hammering directly on the threaded shaft ends.Verification: Crankshaft spins freely with zero binding, axial play, or radial runout inside the matched crankcase halves, providing smooth primary rotation for high-output two-stroke operation.
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.
