Skip to content
NOTICE: DUE TO HIGH ORDER VOLUME, CURRENT HANDLING TIME IS 5-7 BUSINESS DAYS. OUR TEAM IS WORKING HARD TO PROCESS YOUR ORDERS AS QUICKLY AS POSSIBLE. WE TRULY APPRECIATE YOUR PATIENCE AND UNDERSTANDING. 🙏
NOTICE: DUE TO HIGH ORDER VOLUME, CURRENT HANDLING TIME IS 5-7 BUSINESS DAYS. OUR TEAM IS WORKING HARD TO PROCESS YOUR ORDERS AS QUICKLY AS POSSIBLE. WE TRULY APPRECIATE YOUR PATIENCE AND UNDERSTANDING. 🙏

04 05 TRX450R Complete Engine Motor 500cc Big Bore Stroker Assembled Assembly

by BPRATV
Save 25% Save 25%
Original price $3,999.99
Original price $3,999.99 - Original price $3,999.99
Original price $3,999.99
Current price $2,989.99
$2,989.99 - $2,989.99
Current price $2,989.99


COMPLETE BUILT 500cc BIG BORE STROKER

Photos are of actual engine you will receive

Used core bottom end with all new parts listed below

97mm big bore cylinder

Wiseco 11.5:1 custom big bore forged piston

  • Nitrite coated piston rings
  • Chrome wristpin
  • Circllips

Hotrods +3mm stroker crank assembly

Crank bearings

Crank balancer bearings

Transmission bearings

Shift cam bearings

Water pump bearing

Clutch bearings

Gasket kit

Cometic big bore MLS head gasket

  • HD timing chain

Timing chain guides

  • Talon TITANIUM cylinder head stud kit - LIFETIME WARRANTY*
  • Runs on pump or race gas

Works with stock or modified head

6 month warranty*

Additional parts like clutch, cylinder head, etc can be added. Contact us for details and pricing.

DO YOU NEED THIS ITEM INSTALLED ON

YOUR VEHICLE?  WE HAVE YOU COVERED!  AT BPRATV WE HAVE BEEN OFFEIRNG THE BEST IN PARTS AND SERVICE FOR OVER 20 YEARS.  OFTEN REPLICATED, NEVER DUPLICATED.  VISIT US ONLINE, CALL US, OR COME SEE US IN PERSON AT OUR UPLAND, CA LOCATION.

PRICES AND LISTINGS ARE SUBJECT TO

CHANGE AT ANY TIME WITHOUT NOTICE. 

DEALERS CONTACT US TO RECEIVE AN INDUSTRY DISCOUNT ON EVERYTHING WE

SELL.

Returns: We accept returns within the first

30 days for all or part of your order, as long as any part(s) being returned are send back 100% complete, brand new, never installed, in the original packaging.  Once items have been installed if there is an issue contact us for warranty.

Warranty: This item is NOT DIY.  99% of the people on this planet are not qualified to build an engine, and we always strongly recommend parts be installed by a qualified, experienced mechanic.  Warranty does not cover any failure that is the result of improper installation, tuning, break in, lack of maintenance, or misuse.  For any warranty to be considered the part(s) in question must be sent to us for inspection, NO EXCEPTIONS.  We can not warranty parts based solely on photos, emails, phone calls, what you read online, or what another mechanic says is the problem.  Titanium Warranty: If a Titanium fastener fails for any reason during use, NOT INSTALLATION, we will send you a new, complete kit.  No other parts not any labor is included, and warranty can not be converted to a refund or discount of any kind.

We greatly appreciate your business.  We know you have many choices for your power sports parts and service needs.  Five-star feedback is greatly appreciated.  If for any reason you feel we do not deserve 5 Stars on Google or eBay we ask that you contact us and at least give us the opportunity to correct the situation first. 

It is in ours and yours best interest for you to get the parts you want, in the condition you want, and that is what we strive to do with every order, big and small.













We are BPRATV, located at 1538 Howard

Access Road, Suite A, Upland, CA 91786. 

We are open Monday thru Friday, 7am to 4pm, PST.  We can provide you with technical support

before and after your purchase.  We offer

everything from an oil filter to a complete turn key engine, and no job is too

big or too small.



Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare