Honda 400EX & 400X
Honda TRX 400EX & 400X 85mm Stock Bore Top End Rebuild Kit

Part #: (3P-400K)
Starting from $339.98

The BEST TOP END REBUILD for your Honda TRX 400EX is this one.  This 400EX stock bore top end kit is all brand new.  It is an excellent 400EX top end upgrade.

Fits Honda 400EX & 400X Years 1999-2015

Kit includes:

  • 85mm NEW cylinder
  • 85mm Custom piston kit (select brand at checkout)
  • Cometic top end gasket set

This kit will fit all years and models. It is a bolt on kit with no machining required, and it works with your stock or modified head and crank.  The piston will work on pump or race gas.  The original manufacturers warranty applies.

Email azpowersports@yahoo.com or call us at 480-221-0441 with any questions. 


Price: $339.98

Photos of Honda 400EX & 400X Honda TRX 400EX & 400X 85mm Stock Bore Top End Rebuild Kit

FREE STANDARD SHIPPING is available in all US lower 48 states, APO addresses, and Puerto Rico via USPS or UPS. (*Exceptions apply for Alaska and Hawaii.)
Free standard shipping means we will select an option that gets you your parts as soon as possible while still being economically priced.

*Shipments to Alaska and Hawaii are free as long as the parts will fit in a USPS Priority Mail Flat Rate box or envelope.
For any other type of shipping there will be a charge.


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