
Wiseco sport compact pistons are forged and machined in-house and receive a full compliment of power enhancing features. Light weight forgings, millimeter ring packs, extra-strength forgings, gas ports, skirt coatings, offset pins, and a variety of other features are available to insure each engine exceeds our customer’s expectations. Optimized skirt profiles minimize rock and provide long skirt life in stroker applications.
All machining is done on the newest CNC equipment to insure the tightest tolerances in the industry. Our Wiseco sport compact pistons are top of the line performance parts, built for the demanding consumer that wants nothing but the best. Some of our sport compact pistons are even matched with high quality NPR Steel nitrided rings with napier style 2nd rings.
Bore Size / Compression Ratio include:
- 86.25 mm (0.010" over)
- 86.50 mm (0.020" over)
- 87.00 mm (0.040" over)
Wiseco Piston Inc. is a World Class manufacturer of hi-performance, forged pistons for the snowmobile, motorcycle, ATV, personal watercraft, outboard marine and automotive markets. Wiseco has emerged as a world leader in the manufacturing of the recreational and racing industries by engineering, testing and manufacturing the finest aftermarket piston available today!
Wiseco Armor Plating
In order to provide the best quality piston Z1 has opted to include Wiseco's ArmorPlating and ArmorGlide coating on all shelf stock pistons FREE OF CHARGE. This is not a standard service! Most pistons and rebuild kits on the market choose a cheaper raw uncoated piston (pictured below) to save on kit cost.
Wiseco's ArmorPlating is a proprietary surface coating used primarily for piston ring blow-by reduction, friction reduction, and detonation resistance. The reduced rotational friction offered by the ArmorPlating is a real benefit in the piston pin bore. The blow-by reduction comes as a result of a better “fit” between the rings and the ring grooves. It significantly improves the lower edge sealing of the top ring groove, maintaining a very low amount of blow-by for a long time, compared to an uncoated groove. As an added benefit, it also eliminates microwelding of the top ring groove. Read more about Wiseco's coating HERE.
Custom and special order pistons do not include this coating standard. They are RAW and recieve no special coatings on the skirt or piston surface. If this is desired, please contact us prior to ordering.

Images to the right are generic and may not respresent the parts you recieve.
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