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YFZ450R YFZ 450R 98 mil Big Bore Kit 478 480 Cylinder +3 Top End Rebuild Complet

$574.99

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Compatible Vehicles
Submodel Year Make Model
-- 2020 Yamaha YFZ450R
-- 2018 Yamaha YFZ450R
-- 2017 Yamaha YFZ450R
-- 2016 Yamaha YFZ450R
Special Edition 2016 Yamaha YFZ450R
-- 2015 Yamaha YFZ450R
-- 2014 Yamaha YFZ450R
-- 2013 Yamaha YFZ450R
-- 2012 Yamaha YFZ450R
-- 2011 Yamaha YFZ450R
-- 2010 Yamaha YFZ450R
-- 2009 Yamaha YFZ450R
Team Yamaha 2014 Yamaha YFZ450REL
-- 2020 Yamaha YFZ450RSE
-- 2018 Yamaha YFZ450RSE
-- 2017 Yamaha YFZ450RSE
Special Edition 2015 Yamaha YFZ450RSE
Special Edition 2014 Yamaha YFZ450RSE
Special Edition 2013 Yamaha YFZ450RSE
Special Edition 2012 Yamaha YFZ450RSE
Special Edition 2011 Yamaha YFZ450RSE
Special Edition 2010 Yamaha YFZ450RSE
Special Edition 2009 Yamaha YFZ450RSE
Custom Graphics 2013 Yamaha YFZ450RW
Custom Graphics 2012 Yamaha YFZ450RW
-- 2011 Yamaha YFZ450X
-- 2010 Yamaha YFZ450X
Bill Balance Edition 2010 Yamaha YFZ450X
Special Edition 2011 Yamaha YFZ450XSE
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FITS ALL YAMAHA YFZ450R FI MODELS AND YEARS


  • NEW 98mm cylinder
  • Wiseco CP or JE forged piston
  • Hi temp piston rings
  • Chrome wristpin
  • Circlips
  • Head stud kit
  • Top end gasket kit
  • Timing chain
  • Stickers
This is a bolt on kit that requires no machining of any kind.  Everything is brand new and the manufacturer's warranties apply***.

**Products we sell:  At bpracingatv our kits come with parts from the best brands in the industry.  What often makes our kits different is they are always more complete than our competitors' and we have access to products other companies do not.  We want you to spend as little time having to search for parts as possible.  We always stock the exact same parts from different companies so that when back orders occur we have an alternate part to send that is the same quality.  This would be the ONLY reason your order might be slightly different when it arrives.  We have bulk pricing available for every item we sell.  Just let us know how many you need!

Returns: Please check your order when you receive it and let us know immediately if there is an issue.  Returns are intended to be for buyers who receive orders and decide they do not want it before using.  Just as you cannot buy a shirt, take the tags off, wear it, and then return it for a full refund, the same applies to the parts we sell.  Orders can be returned within the first 30 days as long as they arrive back to us brand new in the original packaging.  To receive a full refund every single part, big and small, must be returned.  Parts that do not meet these requirements are not refundable.  If you install and use parts, then have an issue, that is a warranty as opposed to a return.  See warranty info below.

***Warranty: Unless otherwise stated, we stand behind the parts we sell 100%.  If after installation there is an issue, contact us for a warranty return authorization.  The parts we sell are not DIY.  For any part(s) to be covered under warranty proof that they were installed by a professional mechanic must be provided.  Also, the part(s) in question must be sent back to us for inspection first.  We cannot warranty parts not installed correctly and we cannot warranty anything based on phone calls, photos, or another mechanic's assessment alone.  Warranty does not cover failure due to improper installation, tuning, break in, or misuse. STUD WARRANTY:  All stud kits come with a lifetime replacement warranty against failure during use (NOT INSTALLATION).  If a failure occurs we will send a new complete stud kit free of charge.  No other parts or any labor are included, and warranty can not be converted to a refund or discount on any order.