Wiseco Piston Kit 67.50mm - Honda TRX250R FourTrax (1987-1989)

Wiseco has been forging two-stroke pistons in Mentor, Ohio since long before most of the machines on this list rolled off the line, and this is the same high-silicon aluminum alloy forging that made their reputation. A forged piston moves heat better and tolerates detonation far better than the cast slug that came in it from the factory, which matters on an air-cooled engine and matters even more on a machine that has been sitting in a shed for thirty years. The forging design and skirt profile are built to make real horsepower and torque rather than just fill a bore, and every kit ships complete with the rings, wrist pin and circlips you need to close the top end back up. If you are rebuilding a vintage three-wheeler or an old dune machine, this is the part that decides whether it runs for one season or for twenty. Made in the USA.

Important: This is an oversize piston. Your cylinder must be bored to 67.50mm before this will fit. If your cylinder is still standard, order the standard bore version instead.

✓ Fits

• 1987-1989 Honda TRX250R FourTrax
• Stock bore and stroke 66 x 72mm • 246cc • liquid cooled • bridged intake • Pro-Lite
• This listing is 67.50mm bore, +1.50 over

✓ Features

• Forged from high-silicon aluminum alloy for maximum strength and dependability
• Innovative forging design and piston skirt profile provide maximum horsepower and torque
• Handles heat and detonation far better than the original cast piston
• Uses circlip CW18
• Made in the USA

✓ What's Included

• Forged piston
• Piston rings
• Wrist pin
• Circlips

Ships fast from DuneGoonShop!