CROSS REFERENCE PART NUMBERS:
• Honda 13101-HP5-600
• Pro-X 01.1487.100
ITEM SPECIFICATIONS:
• Component: Piston Kit (1.0mm Oversize)
• Piston Size: 87.5mm (1.0mm Oversize)
• Bore x Stroke: 86.5mm x 71.5mm
• Displacement: 420cc
• Compression Ratio: 9.9:1
• Kit Contents: Piston, Rings, Wrist Pin, Circlips
• Material: Cast Aluminum Alloy Piston
• Engine: 420cc Liquid-Cooled Single-Cylinder 4-Stroke OHV
• Model Years: 2007-2025
COMPATIBLE MODELS:
Honda TRX420 FourTrax Rancher ATV:
• TRX420FM / TRX420FE (4x4 / 4x4 ES) (2007-2025)
• TRX420TM / TRX420TE (2WD / 2WD ES) (2007-2025)
• TRX420FA (4x4 AT) (2009-2014)
• TRX420FPA / TRX420FPM (4x4 Power Steering) (2009-2014)
PRODUCT DETAILS:
Direct replacement piston kit engineered for the Honda TRX420 FourTrax Rancher 420cc liquid-cooled single-cylinder 4-stroke utility ATV from 2007 through 2025 model years. The 1.0mm oversize piston at 87.5mm provides proper piston-to-wall clearance within the 87.5mm overbored cylinder for optimal ring seal and 4-stroke performance across the full RPM range. Kit comes complete with cast aluminum alloy piston, precision-fitted piston rings, hardened wrist pin, and retaining circlips for a comprehensive top-end rebuild on the Honda TRX420 Rancher. Precision machined on CNC equipment using low-expansion piston alloy for reliable sealing and consistent power delivery in utility and recreational ATV riding conditions. The TRX420 Rancher features Honda's liquid-cooled OHV engine platform with fuel injection providing dependable power for trail riding and heavy-duty utility work applications. This piston kit ensures proper fit and dependable performance for all 2007-2025 Honda TRX420 FourTrax Rancher utility ATVs.
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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