Honda 400EX / 400X / XR400R Complete Head Rebuild Kit – Stage 2 Hotcam

This premium head rebuild kit is built for reliability and performance across all Honda 400EX, 400X, and XR400R models. With a Stage 2 Hotcam and top-tier valvetrain components from SKF and Kibblewhite, this kit delivers increased power and long-lasting durability. Designed to work on stock or ported heads, this setup is ideal for trail riders, racers, and serious rebuilders alike. Everything is brand new and ready to install – just add a qualified mechanic.

✅ What’s Included:

• Stage 2 Hotcam

• SKF camshaft bearings

• Kibblewhite stainless steel intake & exhaust valves

• Kibblewhite valve spring kit w/ Titanium retainers

• Valve spring base washers/seats

• Rocker arm wave washers (x2)

• Rocker arms

• Rocker arm shafts

• Rocker arm circlips and springs

• Viton valve stem seals

• Valve keepers

• Works on all OEM & aftermarket heads

📦 Fitment:

Fits all model years of the following:

• Honda TRX400EX (1999–2008)

• Honda TRX400X (2009, 2012–2014)

• Honda XR400R (1996–2004)

🛡️ Warranty Info:

We stand behind every part 100%. If there’s a problem after professional installation, contact us for a warranty return.
IMPORTANT:

• This is not a DIY kit. Improper installation voids warranty.

• Stud warranty covers failures during use only – not installation. If a stud fails under proper use, we’ll send a complete replacement stud kit (labor not included).

• For any claim to be processed, the part must be returned for inspection. No exceptions.