kruk as stroke up
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- Yamaha F1ZR Racing Crankshaft
Yamaha F1ZR Custom Crankshaft | 52 / 53 / 53.6 / 54 mm
- Custom Yamaha F1ZR crankshaft (Kruk As) with confirmed 52 mm, 53 mm, 53.6 mm and 54 mm options. OEM/ODM Kruk As Custom Stroke projects are available by quotation.
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