CROSS REFERENCE PART NUMBERS:
• Yamaha 60E-11631-00-B0
• Pro-X 01.2523.A
ITEM SPECIFICATIONS:
• Component: Piston Kit (Standard Bore A Grade)
• Piston Size: 73.97mm (Standard Bore A Grade)
• Bore x Stroke: 74.0mm x 58mm (Standard)
• Displacement: 998cc (4-Cylinder)
• Compression Ratio: 10.6:1
• Kit Contents: Piston, Rings, Wrist Pin, Circlips
• Material: Forged Aluminum Alloy Piston
• Engine: Liquid-Cooled 4-Stroke DOHC (MR-1)
• Model Years: 2002-2008 (various Yamaha MR-1 watercraft and jet boats)
COMPATIBLE MODELS:
Yamaha 998cc MR-1 Watercraft:
• FX 140 (2002-2004) / FX 1000 (2005-2008) / FX Cruiser (2003-2008)
Yamaha 998cc MR-1 Jet Boats:
• AR 230 (2004-2006) / SR 230 (2003-2005) / SX 230 (2004-2006)
PRODUCT DETAILS:
Direct replacement standard bore piston kit engineered for the Yamaha 998cc liquid-cooled 4-stroke DOHC engine powering the FX 140, FX, FX Cruiser, AR 230, SR 230, and SX 230 models. The 73.97mm A grade piston delivers proper clearance for reliable ring seal and consistent 4-stroke performance in standard bore MR-1 engine cylinders. Kit comes complete with forged aluminum alloy piston, precision-fitted piston rings, hardened wrist pin, and retaining circlips for a comprehensive top-end rebuild. Precision machined on CNC equipment using premium forged aluminum alloy for reliable sealing and consistent power delivery in demanding marine 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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