CROSS REFERENCE PART NUMBERS:
• Yamaha 66E-11631-00-C0
• Yamaha 66E-11631-01-C0
• Yamaha 66V-11631-00-C0
• Pro-X 01.2518.C
ITEM SPECIFICATIONS:
• Component: Piston Kit (Standard Bore C Grade)
• Piston Size: 79.92mm (Standard Bore C Grade)
• Bore x Stroke: 80.0mm x 78mm (Standard)
• Displacement: 784cc (2-Cyl) / 1176cc (3-Cyl)
• Compression Ratio: 5.9:1
• Kit Contents: Piston, Ring, Wrist Pin, Circlips
• Material: Cast Aluminum Alloy Piston
• Engine: Liquid-Cooled 2-Stroke Power Valve Watercraft
• Model Years: 1998-2005 (various Yamaha PV watercraft models)
COMPATIBLE MODELS:
Yamaha 800cc Power Valve Watercraft:
• GP 800 (1998-2002) / GP-R 800 (2003-2005)
• XL 800 (2000-2001) / XLT 800 (2002-2004)
Yamaha 1200cc Power Valve Watercraft:
• GP-R 1200 (2000-2002) / XL 1200 (2001) / XL LTD 1200 (1999-2000)
• XLT 1200 (2002-2005) / XR 1800 1200 (2000-2001)
PRODUCT DETAILS:
This standard bore C grade piston kit is designed for Yamaha power valve watercraft models spanning the 800cc twin-cylinder and 1200cc triple-cylinder 2-stroke engine families. The 79.92mm C grade piston provides factory-specified piston-to-wall clearance for optimal ring seal and compression in standard bore cylinders. Each kit includes cast aluminum alloy piston, precision-fitted piston ring, hardened wrist pin, and retaining circlips for Yamaha 800cc and 1200cc PV watercraft. Manufactured using premium cast aluminum alloy and precision machined on CNC equipment for consistent dimensions and reliable performance.
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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