TRX400EX / 400X Head Rebuild Kit – Stage 1 Hotcam & Valves
🛠️ TRX400EX / TRX400X Stage 1 Hotcam Head Rebuild Kit – Complete Top End Setup
Give your Honda 400EX, 400X, or XR400R a serious upgrade with this complete head rebuild kit featuring a Stage 1 Hotcam, stainless valves, cam chain, and more.
This kit works on stock or ported heads and supports both OEM and big bore top ends. Everything is brand new and ready to install—perfect for performance trail builds or mild race setups.
✅ What’s Included:
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Stage 1 Hotcam Camshaft
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Camshaft Bearings (x2)
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Rocker Arms + Rocker Arm Shafts
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Stainless Steel Intake & Exhaust Valves
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Valve Springs (uses OEM retainers & collars)
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Valve Stem Seals + Keepers
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Cam Chain
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Top End Gasket Kit
📦 Fitment:
Fits all:
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Honda TRX400EX (1999–2008)
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Honda TRX400X (2009, 2012–2014)
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Honda XR400R (1996–2004)
🛡️ Warranty Info:
Includes full manufacturer warranty on all components.
⚠️ Must be installed by a qualified mechanic. Warranty is void if failure results from improper installation, tuning, or lack of maintenance.
We ship next day most of the time. Modquad parts are shipped Monday-Thursday. Engine Kits are 3-5 business days.
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