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BPRATV will be closed on December 24th and 25th in observance of the Christmas holiday. We will have very limited operations from December 27th to December 31st for our annual cycle counts. Thank you for your patience and understanding. Additionally, we will be closed on January 1, 2025, for New Year's Day.
BPRATV will be closed on December 24th and 25th in observance of the Christmas holiday. We will have very limited operations from December 27th to December 31st for our annual cycle counts. Thank you for your patience and understanding. Additionally, we will be closed on January 1, 2025, for New Year's Day.

04 05 TRX450R 97mm Hi Comp Big Bore Kit 13.5:1 Race Gas 479cc Top End Rebuild

Sold out
Original price $984.50
Original price $984.50 - Original price $984.50
Original price $984.50
Current price $575.00
$575.00 - $575.00
Current price $575.00


97mm big bore cylinder

Wiseco 13.5:1 custom big bore forged piston

  • Nitrite coated piston rings
  • Chrome wristpin
  • Circllips

Cometic big bore top end gasket kit

  • MLS head gasket
  • Valve stem seals
  • NGK iridium spark plug
  • HD timing chain
  • Talon TITANIUM cylinder head stud kit - LIFETIME WARRANTY*
  • Runs on race gas only
  • No mods required
  • 1 year warranty*

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.



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