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

$524.99

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

FITS ALL YAMAHA YFZ450R FI MODELS AND YEARS


BOLT ON RELIABLE BIG BORE POWER!

  • NEW 98mm cylinder
  • 13.5:1 CP-Carrillo or JE forged piston
  • Hi temp piston rings
  • DLC chrome wristpin
  • Circlips
  • Head stud kit with ARP flange nuts 
  • Top end gasket kit
  • Timing chain
  • Installation instructions*
  • Stickers
This is a bolt on kit that requires no machining of any kind.  Runs on race gas.  All parts are new in the original packaging, and the original manufacturers' warranties apply*.

Please check your order thoroughly when receiving it.  If for any reason at all you are not 100% happy please contact us right away so we can help resolve the issue.  If for any reason at all you are not happy with your order you are welcome to return it UNOPENED NEVER INSTALLED COMPLETE (NOTHING MISSING) AND BRAND NEW IN THE ORIGINAL PACKAGING for a FULL REFUND! *If we receive your order back incomplete, packaging ripped open and/or parts missing we will have to deduct our loss from your refund.

*We recommend that this kit be installed by a qualified mechanic with experience working on these types of motors.  Warranty does not include any failure that is a result of improper installation, improper tuning, improper break in, or misuse.  Piston comes with specific instructions for setting the ring gap.  If you do not follow these exactly your motor will fail.  For any warranty to be considered the part(s) in question must first be sent to us and possibly the manufacturer for inspection.  We can not warranty parts based on photos or phone calls alone.