• Works on all Honda 400EX 400X and XR400R models and years
• NEW aftermarket cylinder
• Forged Wiseco or Wossner piston**
• Hi temp piston rings
• Chrome wristpin
• Circlips
• Top end gasket kit
• MLS head gasket
• Runs on pump or race gas
• No mods required
• 1 year warranty*

We are , offering you the best in parts and service for over 20 years. If you need this item installed contact us, we have you covered. Call, email, or visit our Upland, CA location Monday thru Friday, 7am to 4pm PST. Se habla espanol.

Returns:You are welcome to return part of all of your order, and orders can be returned within the first 30 days, as long any parts for which a refund is requested are returned to us brand new, 100% complete, in the original packaging. To receive a full refund every single part you receive, big and small, must be returned.Parts that do not meet these requirements are not refundable and the cost of any part not returned in the appropriate condition cannot be refunded.If you install and use parts, then have an issue, that is a warranty as opposed to a return.See warranty info below.

***Warranty:This product is NOT DIY. WeALWAYS STRONGLYrecommend parts be installed by a qualified, experienced mechanic. Warranty does not cover failure that is a result of improper installation, tuning, break in, lack of maintenance, or misuse. For any warranty to be considered the part(s) in question must first be sent back to us for inspection, NO EXCEPTIONS. We cannot warranty parts based on phone calls, photos, emials, what you read online, or another mechanic’s assessment alone.