ATV & UTV Top End Kits

Top end rebuild & big bore kits for Honda TRX400 & XR400

Piston, rings & gasket kits for stock bore rebuilds and displacement upgrades

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Honda TRX400 XR400 440cc Big Bore Kit
$129.00
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5 reviews
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Honda XR400 TRX400 Top End Cylinder Kit Stock Bore
$95.00

1 review

ATV & UTV Top End Kits

Top end rebuild and big bore kits for Honda TRX400 and XR400 platforms.

440cc Big Bore Kit — Honda TRX400 / XR400 — Bumps displacement to 440cc with a new cylinder, piston, and gaskets.

Top End Cylinder Kit Stock Bore — Honda XR400 / TRX400 — Stock bore rebuild kit with cylinder, piston, rings, and gaskets.