YFZ450 YFZ 450 Big Bore Kit Hotcams 98mm Cylinder CP 13.5:1 Stage 3 Cams Top End
YFZ450 YFZ 450 Big Bore Kit Hotcams 98mm Cylinder CP 13.5:1 Stage 3 Cams Top End
YFZ450 YFZ 450 Big Bore Kit Hotcams 98mm Cylinder CP 13.5:1 Stage 3 Cams Top End

YFZ450 YFZ 450 Big Bore Kit Hotcams 98mm Cylinder CP 13.5:1 Stage 3 Cams Top End

Regular price$1,185.00
Shipping calculated at checkout.



  • BPR 98mm big bore cylinder
  • CP-Carrillo 98mm 13.5:1 forged piston
  • Nitrite coated piston rings
  • Chrome wrist pin
  • Circlips
  • Stage 3 Hotcams
  • TITANIUM Maxlock head stud kit - The STRONGEST, LIGHTEST head studs on the market - LIFETIME WARRANTY*
  • Cometic top end gasket kit
  • MLS big bore head gasket
  • Valve stem seals
  • Timing chain
  • Stickers, stickers, stickers
  • Piston uses race gas only
  • All parts are brand new
  • 1 year warranty*

Returns: Please check your order completely when you receive it and contact us if there is an issue.  99% of problems can be easily solved without returning the entire order.  We accept returns within the first 30 days.  If you are returning an order because you “Changed Your Mind” it is subject to a 10% retocking fee plus a deduction for our cost shipping the order to you.  Orders must be sent back 100% complete and all parts must be brand new, never installed, in the original packaging to receive a refund for them.  Once items have been modified, installed, or used in any way they are not eligible for return.  It is the buyer’s responsibility to ensure returned parts arrive to us in the same condition they were when they left our facility.  For more info about returns see the eBay Return Policy. 

 *Warranty: We stand behind all parts we sell 100%.  If after installation there is an issue contact us for a warranty return.  This product is NOT DIY.  Over 99% of people in the world are not qualified to build an engine.  It requires special tools and has to be done 100% correct.  Many parts must be measured down to .01”.  We ALWAYS STRONGLY recommend parts be installed by a qualified, experienced mechanic.  Warranty does not cover failure that is a result of improper installation, tuning, break in, or misuse.  For any warranty to be considered the part(s) in question must first be sent back to us for inspection.  We do not warranty parts based on phone calls, photos, or another mechanic's assessment alone.  It is the responsibility of the person assembling and tuning the parts to make sure they work correctly.  STUD WARRANTY: If for any reason a stud fails during use, not installation, we will send a new, complete stud kit.  No other parts or any labor are included, and it can not be converted to a refund or discount on any order.  Studs must be returned to us for inspection first.  ALPHA CUB WARRANTY: If your Alpha Cub cylinder fails for any reason not related to installation, tuning, break in, or misuse we will fix the cylinder free of charge.  If it can not be fixed we will supply you with a new one.  It must be sent to us for inspection, and Millennium Technologies will determine if the cylinder is repairable.  WE DO NOT WARRANTY ANYTHING BASED ON WHAT ANOTHER MECHANIC SAYS IS THE PROBLEM.

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!