Standard-Bore Cylinder & Piston Top-End Kit for Honda TRX400EX 1999–2008
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Listed for Honda TRX400EX (1999–2008).
Confirm the engine still uses its standard 85 mm bore and compare all included parts before installation.
Product Overview
This cylinder and piston top-end kit is intended for Honda TRX400EX (1999–2008). This kit provides the listed standard-bore cylinder and piston repair components for an upper-engine rebuild.
Low compression, a damaged cylinder or excessive oil use may mean the engine's top end needs rebuilding.
Key Features & Performance
- Part: Cylinder and piston top-end kit
- Listed application: Honda TRX400EX (1999–2008)
- Reference / size stated in the listing: 85 mm
Part Numbers & Specifications
Part references or dimensions provided for comparison: 85 mm. These are identification details, not a guarantee that every referenced version interchanges.
Frequently Asked Questions
Can this part help with the problem I am having? Low compression, a damaged cylinder or excessive oil use may mean the engine's top end needs rebuilding. This kit provides the listed standard-bore cylinder and piston repair components for an upper-engine rebuild.
How can I check fitment? Confirm the engine still uses its standard 85 mm bore and compare all included parts before installation.
OEM & Ordering Notes
This is an aftermarket replacement or service part unless explicitly identified otherwise. Brand and model names are used only to describe compatibility; Part Outfitters is not affiliated with the original equipment manufacturer. Confirm fitment and inspect the original part before ordering.