YFZ450 YFZ 450 Big Bore Stroker Motor Build 500cc Assemble Your Engine Rebuild Service
YFZ450 YFZ 450 Big Bore Stroker Motor Build 500cc Assemble Your Engine Rebuild Service
YFZ450 YFZ 450 Big Bore Stroker Motor Build 500cc Assemble Your Engine Rebuild Service
YFZ450 YFZ 450 Big Bore Stroker Motor Build 500cc Assemble Your Engine Rebuild Service

YFZ450 YFZ 450 Big Bore Stroker Motor Build 500cc Assemble Your Engine Rebuild Service

Regular price$7,308.00
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Shipping calculated at checkout.

Used Assembled Cylinder head w/ Kibblewhite Valves & Springs
Add full ace port and polish to head addition
Install Head option/ install cams and set timing
YOU SEND US YOUR ENGINE AND WE WILL DO THE REST!  BEWARE OF "COMPANIES" THAT JUST TEAR YOUR ENGINE DOWN, CLEAN THE PARTS, AND PUT IT BACK TOGETHER!  GET THE JOB DONE RIGHT!  BELOW IS A LIST OF THE PARTS AND LABOR INCLUDED:

Complete stock rebuild including cylinder head valve job with the following new parts:
BPR 98mm big bore cylinder
Wiseco JE of CP forged pump gas piston
Hotrods +3mm stroker crankshaft with rod
Crank bearings
Crank balancer bearings
Water pump bearings
Transmission bearings
Shift cam bearings
Clutch bearings
Clutch arm bearings
Starter clutch bearings
Maxlock TITANIUM head stud kit - LIFETIME WARRANTY*
Complete gasket kit
Cometic MLS head gasket
Complete crankcase oil seal kit
'07+ oil pump
Water pump shaft with impeller
K&N oil filter
Clutch kit
Cam/Timing chain
Timing chain guides
Valve stem seals

Labor included:
Complete teardown and inspection
Clean all parts and flush out cases
Advise on any OEM parts that need replacing
3 angle cut valves and valve seats
Lap valves and assemble head
Sandblast cases and head
Size piston rings to bore
Install cams, shim, and set timing
Add 

Lead time is about 6 weeks from the date we receive your engine.  All parts and the labor we perform come with a 1 year warranty*  Contact us with questions!

The following parts can be added on for an additional cost:
Used assembled cylinder head with Kibblewhite valves and springs $1850
Same head as above except full race ported and polished $2250
Installation for either of the above two heads $250 or $400 to install cams and set timing also
Kibblewhite valves and springs with seals and keepers $425
Hotcams $350
Webcams $600
New OEM clutch cover $120 (Used $50)
These are just a few of the options but there are plenty more so contact us with questions!

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.

If you call we answer, if you text we respond, if you have a question we respond. Sometimes we sleep so it could be next morning but we will respond.

Thank you for shopping with us! We appreciate you!

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Cut em Up!

Dune Goons Rider ~ Breanna
Showing her personal style and cutting the shirts up to her liking. We don't mind one bit! Cut em Up!