Everything you need to bring your Honda TRX450R or TRX450ER engine back to life—including brand new OEM crankcases. This is the most complete top and bottom end rebuild kit available, built for serious riders and racers who want unmatched performance and durability.
NEW OEM crankcase set (left & right)
Aftermarket stock bore cylinder
Wiseco or CP forged piston (pump/race gas compatible)**
Hi-temp piston rings, chrome wrist pin, and circlips
Hotrods crankshaft with connecting rod
Heavy-duty main bearings
Counter balancer bearings
Transmission bearings
Shift cam bearing
Clutch arm needle bearings
Water pump bearing
Complete engine gasket kit (head, base, exhaust, case covers, pump covers)
MLS head gasket
Complete crankcase oil seal kit
Valve stem seals
Timing chain
Talon Heavy-Duty Clutch Kit (fibers, steels, springs)
K&N oil filter
NGK Iridium spark plug
Maxlock TITANIUM cylinder head stud kit – LIFETIME WARRANTY*!
Performance stickers
All parts are new and aftermarket unless otherwise noted
Fits ALL 2006–2014 Honda TRX450R (Kick Start) and TRX450ER (Electric Start) models:
TRX450R Kick Start (2006–2009, 2012)
TRX450ER Electric Start (2006–2009, 2011–2014)
💬 Peace of Mind Fitment Check: Our expert tech team verifies every kit before it ships. Just enter your year/make/model at checkout—we’ll make sure it fits!
1-Year Limited Warranty on all parts
Forged internals rated for race or recreational use
Built for high compression performance with pump gas reliability
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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