Revive your Honda CRF250R with this complete, race-ready engine rebuild kit. Whether you’re rebuilding for the track or just want reliable performance, this kit delivers everything you need to bring your motor back to life — top to bottom.
CylinderWorks 78mm OEM-replacement cylinder
Vertex Wrench Rabbit bottom end rebuild kit
Wiseco Pro-Lite forged piston
Hi-temp piston rings
Chrome wrist pin
Circlips
Complete engine gasket kit
MLS head gasket
Full crankcase oil seal kit
Crankshaft bearings
Crank balancer bearings
Transmission bearing kit
Heavy-duty timing chain
EBC clutch kit – Springs, fibers, plates
Moose hour meter
📸 Photos are for reference only. Please refer to the list above for exact contents.
All parts are brand new in original packaging
Designed for stock or lightly modified motors
OEM-spec fitment for easy installation
Great for weekend warriors, racers, or full refresh builds
Includes everything needed for a professional-grade rebuild
Fits all Honda CRF250R models from 2004–2009.
All components come with the original manufacturer warranty. This is not a DIY kit — professional installation by an experienced mechanic is strongly recommended. Warranty coverage excludes damage from improper installation, tuning, or abuse. Any claim requires return of parts for inspection.
We ship next day most of the time. Modquad parts are shipped Monday-Thursday. Engine Kits are 3-5 business days.
We don't do backorder! If your items has already sold you will be notified immediately and you money refunded on the spot.
Sold items are removed daily.
If you see it on this website, it is 100% in stock unless it just sold before you clicked buy.
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I received the Cam, But there were no instructions.
Banshee - Dipstick & Oil Plug Billet - Modquad
My 400ex has never sounded better. New tensioner, guides, and chain fixed the noise. Metal bottom end gasket was cool too, didn't rip while working on it.
Thank you for your positive review! We're glad to hear that the TRX400EX Cam Chain Tensioner & Wiseco Heavy Duty Cam Chain Kit was able to fix the ticking noise on your 400ex. We agree, these small maintenance steps can make a big difference in the overall performance and sound of your vehicle. We appreciate your feedback and hope to continue providing quality products for your ATV. Happy riding!
Well my mechanic said it was some good parts in the box. I'll let you know how the rebuild goes. Great I hope
I haven’t received them yet
Trevor, thank you for your 5 star review. We appreciate that. Rest assured I just checked your tracking info and UPS says they will arrive today between 1:30 & 3:00 pm. Your going to love the Lectron Carburetors!