CYLINDER KIT 90.00mm HONDA 98-04 TRX 450 S ES FE FM 12100-HN0-A00

This top end rebuild kit is designed for all Honda TRX450 S/ES/FE/FM Foreman 450 4x4 models from 1998 to 2004. It includes a standard bore cylinder, piston assembly, gaskets, and related components for restoring engine performance with OEM-level fit and reliability.

Features

• Unmatched reliability and performance from high-tech materials


• Meets or exceeds OEM quality


• Direct OEM replacement


• Easy to install; professional installation recommended if unsure

Specifications

• Displacement: 450cc


• Bore Size: STD 90mm


• Piston Height: 55.6mm


• Cylinder Material: High-grade cast aluminum


• Piston Material: Forged aluminum

Kit Includes

• 1x Cylinder


• 1x Standard Size Piston


• 1x Piston Ring Kit


• 1x Wristpin


• 2x Circlips


• 1x Cylinder Head Gasket


• 1x Cylinder Block Gasket


• 1x Exhaust Gasket


• 1x O-Ring


• 1x Intake Gasket

Cross-Reference OEM Part Numbers

• Cylinder: 12100-HN0-A00


• Cylinder Base Gasket: 12191-HM7-013


• Cylinder Head Gasket: 12251-HN0-A01


• Cylinder Head Cover Gasket: 12315-HM7-005


• Piston: 13101-HN0-A00


• Ring Set: 13010-HN0-A02


• Pin, Piston: 13111-HN0-A00


• Clip, Piston: 13112-MAT-000


• Valve Seals: 12209-KL4-005


• O-Ring (37x2.4): 91305-HN0-A00


• Exhaust Gasket: 18291-MN4-920

Vehicle Fitments

• Honda TRX450 S Foreman 450 4x4 1998–2004


• Honda TRX450 ES Foreman 450 4x4 1998–2004


• Honda TRX450 FE Foreman 450 4x4 1998–2004


• Honda TRX450 FM Foreman 450 4x4 1998–2004