YFZ450 YFZ 450 Big Bore Stroker Crank Complete Motor Engine Rebuild Assembly Kit

YFZ450 YFZ 450 Big Bore Stroker Crank Complete Motor Engine Rebuild Assembly Kit

Regular price$1,249.00
Shipping calculated at checkout.


BPR 98mm cylinder
CP or Wiseco forged big bore piston
Nitrite coated piston rings
Chrome wristpin
Hotrods +3mm stroker crank assembly with rod
SKF crank bearings
Crank balancer bearings
Transmission bearings
Shift cam bearing
Clutch bearings
Water pump bearing
Complete gasket kit
Big bore MLS head gasket
Seal kit
Valve stem seals
Head stud kit 
Clutch kit 
Timing chain
Works with race or pump gas and head no mods required.  Everything is new in the original packaging and the original manufacturers warranty applies*.

Returns: Please check your order completely right when you receive it and let us know immediately if there is an issue, that way we can fix it for your ASAP.  99% of problems can be easily solved without returning the entire order.  We accept returns within the first 30 days for orders sent back 100% complete and all parts brand new, never installed or prepped for installation, in the original packaging.  Once items have been installed or used in any way they are no longer eligible for return.  

 *Warranty: We stand behind all parts we sell 100%.  If after installation there is an issue contact us for a warranty return.  Most products we sell ARE NOT DIY.  Assembling and tuning an engine is not easy and it has to be done EXACTLY RIGHT.  We send an instruction sheet with our kits that lists the steps for assembling an engine and you must follow EVERY SINGLE STEP, and do so correctly.  We ALWAYS 


This part is compatible with 21 vehicle(s)
Notes Year Make Model Submodel
2013 Yamaha YFZ450 --
2012 Yamaha YFZ450 --
2011 Yamaha YFZ450 --
2010 Yamaha YFZ450 --
2009 Yamaha YFZ450 --
2008 Yamaha YFZ450 --
2007 Yamaha YFZ450 --
2006 Yamaha YFZ450 --
2005 Yamaha YFZ450 --
2004 Yamaha YFZ450 --
2004 Yamaha YFZ450LE Limited Edition
2007 Yamaha YFZ450SE Special Edition
2006 Yamaha YFZ450SE Special Edition
2005 Yamaha YFZ450SE Special Edition
2007 Yamaha YFZ450SE2 Special Edition II
2008 Yamaha YFZ450SP Special Edition
2008 Yamaha YFZ450SP2 Special Edition II
2007 Yamaha YFZ450V Bill Balance Edition
2006 Yamaha YFZ450V Bill Balance Edition
2013 Yamaha YFZ450W Custom Graphics

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!