YFZ450R YFZ 450R 98mm Big Bore 5mm Stroker Rebuild Kit Hotcams Valves Complete
YFZ450R YFZ 450R 98mm Big Bore 5mm Stroker Rebuild Kit Hotcams Valves Complete
YFZ450R YFZ 450R 98mm Big Bore 5mm Stroker Rebuild Kit Hotcams Valves Complete
YFZ450R YFZ 450R 98mm Big Bore 5mm Stroker Rebuild Kit Hotcams Valves Complete
YFZ450R YFZ 450R 98mm Big Bore 5mm Stroker Rebuild Kit Hotcams Valves Complete
YFZ450R YFZ 450R 98mm Big Bore 5mm Stroker Rebuild Kit Hotcams Valves Complete

YFZ450R YFZ 450R 98mm Big Bore 5mm Stroker Rebuild Kit Hotcams Valves Complete

Regular price $3,200.00
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THE BIGGEST BADDEST BIG BORE STROKER ON THE PLANET - 520cc!

FITS ALL YAMAHA YFZ450r FI MODELS AND YEARS
    • 98mm BPR big bore cylinder
    • +5mm CUSTOM BUILT Crankworks stroker crank
    • Wiseco JE or CP forged big bore piston**
    • Hi temp piston rings
    • Chrome wristpin
    • Circlips
    • Stage 3 Hotcams intake and exhaust
    • Kibblewhite valve spring kit
    • Kibblewhite stainless intake and exhaust valves
    • Head stud kit
    • Crank bearings
    • Transmission bearings
    • Shift cam bearing
    • Water pump bearing
    • Complete gasket kit
    • Cometic MLS big bore head gasket
    • Complete seal kit
    • Valve stem seals
    • Water pump mechanical seal
    • Cam chain
    • Cam chain guides
    • Billet cam chain tensioner
    • Aftermarket oil pump
    • K&N oil filter
    • NGK spark plug
    • Maxlok TITANIUM head stud kit - LIFETIME WARRANTY*
    • Piston uses pump or race gas
    • Slight modification to cases is SOMETIMES, BUT NOT ALWAYS required

    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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