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HAPPY NEW YEAR!! We are back and shipping orders as fast as we possibly can! Thank you for your patience and understanding. - BPRATV TEAM 🎇🧨
HAPPY NEW YEAR!! We are back and shipping orders as fast as we possibly can! Thank you for your patience and understanding. - BPRATV TEAM 🎇🧨

Port 86-89 TRX250R Ported Cylinder Porting 66mm - 69mm Top End Rebuild Cool Head

by BPRATV
Save $360.00 Save $360.00
Original price $1,499.99
Original price $1,499.99 - Original price $1,499.99
Original price $1,499.99
Current price $1,139.99
$1,139.99 - $1,139.99
Current price $1,139.99

  • Used OEM Honda cylinder with a new sleeve installed and honed to the piston (66mm up to 69mm)*
  • Full race port and polish
  • Wiseco Forged piston
  • Nitrite-coated piston rings
  • Chrome wrist pin
  • Circlips
  • SKF wrist pin bearing
  • Mod Quad Billet cool head
  • Billet cool head dome
  • Cool head o-rings
  • Talon TITANIUM cylinder head studs - LIFETIME WARRANTY*
  • NGK spark plug
  • Runs on pump or race gas
  • Drop in kit no machining required
  • Works on all '85-86 ATC250R and TRX250R models

**PLEASE NOT THAT DEPENDING ON AVAILABILITY THE BORE SIZE MAY BE MOVED UP TO 69mm IN 0.5mm INCREMENTS**

Two-stroke engines get more power from porting than they do from increased size, and this kit combines both.  Our porting is the best in the industry, guaranteed.  When you have that AND the larger bore, plus increased compression from the Cool Head, you have a top end that will stomp the competition, and because it is a stock cylinder they will never know it's coming!  You can get 20+ hp more, depending on what else is done to the engine.

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