4667M08900, 8604D400, 247612, M2033, 1043-2, M2008, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY-670, 90601-KA5-000, 13103-KCY-670, 13111-KCY-670, 12251-HN1-003, 12209-KL4-005, C7825, 808894, 822278, 4040, 4606M08700, C7826, H0402027S, 4606M08800, 4667M08900, 808829, M2033, 8604DA, 192258099805

Honda TRX400EX/TRX400X 440cc Big Bore TopEnd Kit 89mm Wiseco + Cometic

Product Overview

Give your Honda TRX400EX or TRX400X serious power with this complete 440cc 89mm big bore topend rebuild kit. Featuring a Wiseco forged piston and Cometic gasket set, it’s ready for pump or race fuel and bolts right into your stock engine.

Whats Included

• Aftermarket 89mm Big BoreCylinder increases displacement to 440cc
• Wiseco 11:1 Forged Piston Kit includes piston, rings, pin, and clips
• Cometic TopEnd Gasket Kit includes MLS head gasket

Model Fitment

Honda TRX400EX / TRX400X (19992014)

Why Youll Love It

• Bolton upgrade: No machine work or modifications required
• Displacement boost: 440cc big bore adds torque and midrange power
• Premium components: Wiseco forged piston & Cometic MLS gasket
• Fuel flexibility: Built for pump or race gas
• New sealed packaging: Includes full manufacturer warranty

Frequently Asked Questions

• Q: Is any machine work required?
  A: No designed for easy dropin install.
• Q: What fuel is required?
  A: Works great with pump gas; race gas optional.
• Q: Is piston choice customizable?
  A: Standard Wiseco; message us if you prefer alternatives.

Why Buy from ?

The Best Parts. The Best Performance. The Best Price.
Comes new inbox, backed by manufacturer warranty and our expert support.
BRAPPPPPPPPPP!

Build your 400EX/400X into a 440cc beastget your kit today!

Upgrade to big bore power nowbolt-on performance awaits!

LLC

4667M08900, 8604D400, 247612, M2033, 1043-2, M2008, M2003, M2001,4606M08700,12100-KCY-670, 4606M08500, C7826, 71016-4, 12191-KCY-673, 30-33750, 13011-KCY-670, 90601-KA5-000, 13103-KCY-670, 13111-KCY-670, 12251-HN1-003, 12209-KL4-005, C7825, 808894, 822278, 4040, 4606M08700, C7826, H0402027S, 4606M08800, 4667M08900, 808829, M2033, 8604DA, 192258099805