CROSS REFERENCE PART NUMBERS:
• Yamaha 1UY-11631-01-Y0
• Yamaha 1YW-11631-01-Y0
• Yamaha 5UH-11631-00-C0
• Pro-X 01.2487.000
ITEM SPECIFICATIONS:
• Component: Piston Kit (Standard Bore)
• Piston Size: 83mm (Standard Bore)
• Bore x Stroke: 83.0mm x 64.5mm
• Displacement: 348cc
• Compression Ratio: 9.2:1
• Kit Contents: Piston, Ring, Wrist Pin, Circlips
• Material: Forged Aluminum Alloy Piston
• Engine: 348cc Air-Cooled 4-Stroke SOHC 2-Valve Single-Cylinder
• Model Years: 1987-2014 (Various Yamaha 350 ATV)
COMPATIBLE MODELS:
Yamaha 350cc ATV Models:
• Warrior 350 YFM350X (1987-2004)
• Raptor 350 YFM350R (2005-2013)
• Bruin 350 YFM350BA (2004-2006)
• Grizzly 350 YFM350G (2007-2014)
• Wolverine 350 YFM350FX (1995-2009)
PRODUCT DETAILS:
Replacement piston kit designed for the Yamaha 348cc air-cooled 4-stroke SOHC 2-valve engine used across the Warrior 350, Raptor 350, Grizzly 350, Wolverine 350, and Bruin 350 ATV models. The standard bore 83mm piston maintains factory-specified clearance for optimal ring seal and compression in the durable Yamaha 350 engine platform used in sport and utility ATVs. Includes forged aluminum alloy piston, precision-fitted piston ring, hardened wrist pin, and retaining circlips for a complete piston replacement on all compatible Yamaha 350cc models. Built from premium forged aluminum alloy and CNC machined for consistent dimensions and dependable operation in demanding ATV trail and utility conditions. Fits directly into the standard 83mm cylinder bore for piston replacement or top-end rebuild across all applicable Yamaha 350 ATV models listed.
PRODUCT NOTICE:
As a parts distributor we mostly sell aftermarket parts (any OEM parts would be noted as such). Aftermarket parts are not sourced from the original vehicle or equipment manufacturer, but are designed to function the same as - if not better than - the original. All parts sold are new.
WARNING - This product may expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov
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