OEM Grade 90.75mm Piston Kit 0.75mm Oversize Compatible with 1998-2004 Honda TRX450S TRX450ES TRX450FE TRX450FM Foreman 450 433cc Air-Cooled OHV 4-Stroke Rings Wrist Pin 13104-HN0-A00

Piston Kit 0.75mm Oversize Compatible with 1998-2004 Honda TRX450 Foreman 433cc Air-Cooled OHV Single Cylinder (90.75mm Bore)
Direct replacement 0.75mm oversize piston kit for 1998 through 2004 Honda TRX450S, TRX450ES, TRX450FE, and TRX450FM Foreman with 90.75mm bore. Requires cylinder boring from 90.00mm standard to 90.75mm. Kit includes cast aluminum piston with MOS2 coating, piston rings, wrist pin, and circlip retainers for a complete single-cylinder rebuild.

OEM CROSS-REFERENCE PART NUMBERS:
• 13104-HN0-A00 (0.75mm OS piston)
• 13101-HN0-A00 (standard piston)
• 13102-HN0-A00 (0.25mm OS)
• 13103-HN0-A00 (0.50mm OS)
• 13104-HN0-A00 (0.75mm OS)
• 13105-HN0-A00 (1.00mm OS)
• 13010-HN0-A02 (ring set)
• 13111-HN0-A00 (piston pin)
• 12100-HN0-A00 (cylinder)

SPECIFICATIONS:
• Type: Piston Kit with Rings
• Size: 0.75mm Oversize
• Bore: 90.75mm
• Standard Bore: 90.00mm (3.543")
• Bore x Stroke: 90.0mm x 68.0mm
• Displacement: 433cc
• Cylinders: Single Cylinder
• Engine Type: Air-Cooled 4-Stroke OHV
• Kit Contents: Piston, Rings, Wrist Pin, Circlip Retainers
• Material: Cast Aluminum with MOS2 Coating

APPLICATIONS:
• Honda TRX450S Foreman S (1998-2001)
• Honda TRX450ES Foreman ES (1998-2001)
• Honda TRX450FE Foreman ES 4x4 (2002-2004)
• Honda TRX450FM Foreman S 4x4 (2002-2004)

⚠️ Verify OEM part number from your original engine before ordering.