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Free Shipping on orders over $69.99 to the continental 48 (Alaska & Hawaii orders, call 402-214-0706 to order).
All products have accurate in stock quantities listed, if it shows in stock it’s actually in stock!
Free Shipping on orders over $69.99 to the continental 48 (Alaska & Hawaii orders, call 402-214-0706 to order).
All products have accurate in stock quantities listed, if it shows in stock it’s actually in stock!

WISECO 677M06900 677M06900 High-Performance Piston Kit Piston Kit - 69.00 mm - Yamaha WR250/YZ250

by WISECO
Availability:
Only 2 left!
Original price $210.95 - Original price $210.95
Original price
$210.95
$210.95 - $210.95
Current price $210.95

Features

  • Forged from high-silicon aluminum alloy for maximum strength and dependability
  • Wiseco offers a complete range of popular piston models and years for both trail and racing applications
  • Durability, longevity and increased horsepower
  • Innovative forging design and piston skirt provide maximum horsepower and torque
  • Features forged pistons, rings, wrist pins, and circlips
  • These high-tech piston designs offer maximum compression ratios, ultra-stiff strutted forgings, and titanium nitride-coated rings, which all add up to more power that is sustained longer
  • Each piston is E-Coated on the crown, ring grooves, and pin bore, for maximum wear resistance and protection from micro-welding, galling, and detonation
  • GP Series parts generally have less machining on the outside, which helps seal up the bore for increased compression
  • Additionally, boost ports are removed for a more predictable powerband and increased pull on the top end
  • Cylinder sleeves must be purchased separately.
  • Service intervals may be increased with Racer's Choice pistons over conventional Wiseco pistons, and are for expert racers and tuners only.

Specs

Displacement 246.8 cc
Model Pro-Lite
Product Name Piston Kit
Stroke Length 68,00 mm
Piston Material Forged
Bore - Oversize +1.00 mm
Compression Ratio Stock
Piston Material 4032 Aluminum Alloy
Riding Style Off-Road
Piston Diameter 68.96 mm
Skirt Coating Non-Coated
Stroke Length 68.00 mm
Bore - Oversize +1,00 mm
Bore Size 69.00 mm
Units Kit
Engine Type 2-Stroke

Part Notes

  • Ceramic composite cylinders will require sleeving or replating.








1992-1998 Yamaha WR 250
1992-1998 Yamaha YZ 250

Fitment Disclosure

This quick reference fitment information is provided to direct you to our catalog information and the manufacturer's information. Consult manufacturer publication(s) and/or website(s) for specific fitment and application information and other important information. This fitment information is based upon the stock version of the motorcycle or unit referenced and any accessory added or other modification could invalidate the quick reference information provided.