Honda 400EX / 400X / XR400R Complete Head Rebuild Kit – Stage 1 Hotcam

This head rebuild kit is built for long-lasting durability and solid performance using trusted components from SKF and Kibblewhite. With a Stage 1 Hotcam, it's ideal for trail riding, light racing, or anyone needing a dependable top end refresh. Works with stock or ported heads. All parts are brand new, in original packaging, and backed by our 1-year warranty.* Engine work should always be performed by a qualified mechanic.

✅ What’s Included:

• Stage 1 Hotcam

• SKF camshaft bearings

• Kibblewhite stainless steel intake & exhaust valves

• Kibblewhite valve spring kit with 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

• Compatible with all OEM and aftermarket heads

📦 Fitment:

Fits every year of the following Honda models:

• Honda TRX400EX (1999–2008)

• Honda TRX400X (2009, 2012–2014)

• Honda XR400R (1996–2004)

🛡️ Warranty Info:

We back all parts 100%. If there’s an issue after professional installation, contact us for a warranty return.

Important Notes:

• This kit is not DIY – professional installation is required.

• Warranty is void if improperly installed, tuned, or maintained.

• Stud Warranty: If a stud fails during use (not install), we’ll send a replacement stud kit. Labor and other parts are not included.

• All warranty claims require return of the part(s) for inspection. No exceptions will be made for phone calls, photos, or third-party assessments.