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:
Direct replacement piston kit engineered for Yamaha 350cc ATV models including the Warrior 350, Raptor 350, Grizzly 350, Wolverine 350, and Bruin 350 with the 348cc air-cooled 4-stroke SOHC engine. The standard 83mm bore piston provides factory-specified clearance within the cylinder bore for optimal ring seal and power delivery across the full operating range. Kit comes complete with forged aluminum alloy piston, precision-fitted piston ring, hardened wrist pin, and retaining circlips for a comprehensive top-end rebuild on Yamaha 350 ATVs. Precision machined on CNC equipment using premium forged aluminum alloy for reliable sealing and consistent performance in sport, utility, and trail riding conditions. This piston kit ensures proper fit and dependable performance for all Warrior 350, Raptor 350, Grizzly 350, Wolverine 350, and Bruin 350 applications.
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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