For 1999-2008 Honda TRX400EX 85mm Bore Cylinder Piston Top End Kit W/Camshaft
For 1999-2008 Honda TRX400EX 85mm Bore Cylinder Piston Top End Kit W/Camshaft
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85mm Cylinder Piston Top End Kit with Camshaft for Honda TRX400EX
This 85mm bore cylinder piston top end kit with camshaft is a complete rebuild set for the Honda TRX400EX, restoring compression and valve timing on worn or damaged engines.
Overview
This top end rebuild kit delivers the cylinder, piston, and camshaft needed to refresh a tired Honda TRX400EX engine in one purchase. The 85mm bore cylinder piston top end kit restores proper sealing and combustion for riders who demand reliable power. Designed for mechanics and ATV owners rebuilding a worn top end, this 85mm bore cylinder piston top end kit covers the core components in a single package.
Built For Performance
- 85mm bore cylinder sized to restore factory displacement
- Piston and rings matched for consistent compression
- Camshaft included to renew valve timing
- Top end gaskets supplied for a complete rebuild
- Components machined for a precise fit
Fits These Machines
- for Honda TRX400EX 1999
- for Honda TRX400EX 2000
- for Honda TRX400EX 2001
- for Honda TRX400EX 2002
- for Honda TRX400EX 2003
- for Honda TRX400EX 2004
- for Honda TRX400EX 2005
- for Honda TRX400EX 2006
- for Honda TRX400EX 2007
- for Honda TRX400EX 2008
On-The-Job Use
- Top end rebuilds after loss of compression
- Trail and dune riding where dependable power matters
- Routine engine refresh on high-hour machines
- Shop and DIY rebuild projects
Specs At A Glance
| Bore Size | 85mm |
| Kit Contents | Cylinder, piston, camshaft, top end gaskets |
| Machine Fitment | for Honda TRX400EX 1999-2008 |
Good To Know
Q: Is this kit a direct replacement for my OEM top end? A: It is an aftermarket rebuild kit sized to the stock 85mm bore and is designed to replace worn OEM components on the listed models. Confirm your bore and model year before ordering.
Q: Will I need anything else to finish the rebuild? A: Basic gaskets and hardware are included, but you may want fresh coolant and oil for the job. Check your service manual for any additional items your machine requires.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.
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