CROSS REFERENCE PART NUMBERS:
• Honda 13101-KRN-A10
• Honda 13101-KRN-850
• Pro-X 01.1339.A
ITEM SPECIFICATIONS:
• Component: Piston Kit Size A (Standard Bore)
• Piston Size: 77.97mm (Size A for Standard 78.0mm Bore)
• Bore x Stroke: 78.0mm x 52.2mm
• Displacement: 249cc
• Compression Ratio: 13.1:1
• Kit Contents: Piston, Rings, Wrist Pin, Circlips
• Material: Forged Aluminum Alloy Piston
• Engine: 249cc Liquid-Cooled Single-Cylinder 4-Stroke Unicam
• Model Years: 2004-2017
COMPATIBLE MODELS:
Honda CRF250R Motocross Motorcycle:
• CRF250R (2008-2009)
Honda CRF250X Enduro Motorcycle:
• CRF250X (2004-2017)
PRODUCT DETAILS:
Direct replacement piston kit engineered for the Honda CRF250R 249cc liquid-cooled single-cylinder 4-stroke motocross motorcycle from 2008 through 2009 and CRF250X enduro motorcycle from 2004 through 2017. The Size A piston at 77.97mm provides factory-specified piston-to-wall clearance within the standard 78.0mm bore for optimal ring seal and 4-stroke performance across the full RPM range. Kit comes complete with forged aluminum alloy piston, precision-fitted piston rings, hardened wrist pin, and retaining circlips for a comprehensive top-end rebuild on compatible Honda CRF250 motorcycles. Precision machined on CNC equipment using forged aluminum alloy for reliable sealing and consistent power delivery in competitive motocross and demanding enduro conditions. Both models share Honda's Unicam 4-stroke engine platform with 78.0mm bore and 52.2mm stroke for strong mid-range power delivery. This piston kit ensures proper fit and dependable performance for all compatible Honda CRF250R and CRF250X motorcycles.
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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