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99-04 TRX400EX TRX 400EX Stage 1 Cam Shaft Wiseco Crank Complete Rebuild Kit


Compatible Vehicles
Submodel Year Make Model
TRX400EX 2x4 2004 Honda Sportrax 400
TRX400EX 2x4 2003 Honda Sportrax 400
TRX400EX 2x4 2002 Honda Sportrax 400
TRX400EX 2x4 2001 Honda Sportrax 400
TRX400EX 2x4 2000 Honda Sportrax 400
TRX400EX 2x4 1999 Honda Sportrax 400


  • NEW 85mm cylinder
  • 10:1 Wiseco piston
  • Hi temp piston rings
  • Chrome plated wristpin
  • Circlips
  • Head stud kit
  • Stage 1 camshaft
  • Cam bearings
  • Hotrods or Wiseco HD crank with rod
  • HD crank bearings
  • Cam chain
  • Complete gasket kit
  • Complete seal kit
  • Spark plug

Piston uses pump or race gas.  Cam works with stock or after market valve springs. No mods are required to run this kit.  Everything is new in the original packaging and the original manufacturer's warranty applies*. Negative feedback hurts everyone and in most cases is totally unnecessary. If you have ANY issue with something you order from us PLEASE let us fix the problem before you leave feedback. We 100% guarantee we will find a reasonable solution to any problem. We want happy customers always.

Please check your order completely when you receive it and if you have any issues at all contact us right away so we can fix them.  If you are not 100% happy with what you receive you are welcome to return it (PRIOR TO INSTALLATION) for a full refund.

*We ALWAYS strongly recommend that this kit be installed by a qualified mechanic with experience working on these types of motors.  Pistons come with specific instructions for setting ring gap.  If you do not follow these your motor will fail.  Warranty does not cover any failure that is a result of improper installation, improper tuning, improper break in, or misuse.  For any warranty to be considered the part(s) in question must first be sent to us for inspection.  We can not warranty any parts based on phone calls or photos alone.