This site has limited support for your browser. We recommend switching to Edge, Chrome, Safari, or Firefox.

Cart

YFZ450R YFZ 450R Rebuilt Motor Engine Big Bore Complete Assembled Assembly 98mm

$2,999.99

<!–– XIF_BEGIN_COMPATS -->
Compatible Vehicles
Submodel Year Make Model
-- 2013 Yamaha YFZ450
-- 2012 Yamaha YFZ450
-- 2009 Yamaha YFZ450
-- 2008 Yamaha YFZ450
-- 2007 Yamaha YFZ450
-- 2006 Yamaha YFZ450
-- 2005 Yamaha YFZ450
-- 2004 Yamaha YFZ450
Limited Edition 2004 Yamaha YFZ450LE
Team Yamaha 2014 Yamaha YFZ450REL
-- 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
Special Edition 2007 Yamaha YFZ450SE
Special Edition 2006 Yamaha YFZ450SE
Special Edition 2005 Yamaha YFZ450SE
Special Edition II 2007 Yamaha YFZ450SE2
Special Edition 2008 Yamaha YFZ450SP
Special Edition II 2008 Yamaha YFZ450SP2
Bill Balance Edition 2007 Yamaha YFZ450V
Bill Balance Edition 2006 Yamaha YFZ450V
Custom Graphics 2013 Yamaha YFZ450W
Custom Graphics 2012 Yamaha YFZ450W
<!–– XIF_END_COMPATS -->

WORKS ON ALL YAMAHA YFZ450R FI MODELS AND YEARS

Complete rebuilt big bore engine

Used core bottom end - crankcases, transmission, clutch basket - all other parts are new

98mm big bore cylinder

Wiseco CP or JE 98mm big bore forged piston

Nitrite coated piston rings

Chrome wristpin

Circlips

Hotrods or Wiseco HD crank assembly with rod

Complete gasket kit

Cometic MLS big bore head gasket

Seal kit

Water pump mechanical seal

Cam chain

Cam chain guides

Oil pump

K&N oil filter

Transmission bearings

Crank bearings

Crank balancer bearings

Shift cam bearings

Clutch bearings

Water pump bearing

Billet water pump impeller and shaft

Maxlok TITANIUM head stud kit - LIFETIME WARRANTY*

Complete titanium bolt kit for side covers

09-13 clutch set up with Talon clutch kit

Core bottom end torn down, completely inspected, cleaned, and parts sand blasted

Piston rings sized to bore

Complete assembly with above mentioned parts

Runs on pump or race gas

Comes with 6 month warranty*

Payments:  We accept all forms of traditional and online payment methods available – Cash, MC, AMEX, VISA, DISC, PayPal, Venmo, Cash App, among others.  Payment can be made online or over the phone.

**Products we sell: At BPRATV we sell parts from the best names in the industry.  Unless otherwise stated, we will put the quality of the parts we sell up against any other companies’ in the industry.  Also, we stock the same parts from different manufacturers 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. 

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 buyerChanged Mind” it is subject to a 10% restocking 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%.  Everything we sell has been tested hundreds if not thousands of times and when installed and tuned correctly they work over 99% of the time. 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, and it is the responsibility of the person assembling and tuning the engine to make sure everything works correctly.  We ALWAYS STRONGLY recommend parts be installed by a qualified, experienced mechanic.  Warranty covers any failure from the parts and assembly included in this item only. Warranty does not cover failure that is a result of improper installation, tuning, break in, misuse, or failure of any other part on the bike.

WE DO NOT WARRANTY PARTS BASED SOLELY ON PHONE CALLS, EMAILS, PHOTOS, VIDEOS, WHAT YOU READ ONLINE, OR WHAT ANOTHER MECHANIC SAYS IS THE PROBLEM.  WE HAVE A VERY GOOD WARRANTY PROGRAM BUT FOR ANY WARRANTY TO BE CONSIDERED THE PART(S) IN QUESTION MUST BE SENT BACK TO US TO INSPECT.  NO EXCEPTIONS.

















Feedback: Positive

feedback is greatly appreciated.  We have changed the way we do business

in response to customer concerns and receiving positive feedback when an order

goes the way it is supposed to is a huge help.  If you do not feel we

deserve positive feedback just contact us and we will do what is needed to help

you feel as "positive" as possible about your experience.  Also,

we want information from customers when their experience is less than desirable

so we know what areas need improvement the most.  Please work with us and

we will ALWAYS work with you.