Wiseco’s detailed skirt shapes and profiles are very specific to each
application. Variable cam programming software developed in house
allows Wiseco to
produce high-performance shapes unique to only Wiseco. The skirt
shape (barrel/cam) is one of the most functional areas on the piston,
and provides stability
and smooth operation in the cylinder bore. Stability is important
for proper ring seal, reduced friction, and quiet operation. Each skirt
shape is designed
for a specific running clearance, based on coefficient of thermal
expansion of the piston alloy. Some forging alloys expand more than
but each Wiseco piston is designed with the proper installed
clearance to produce the most power, least wear, and best seal at
running temperature, for each application.
Comparing installed clearances on cast vs forged parts is not
indicative of the running clearance at temperature. Wiseco engineers
have a strong background
in all forms of racing applications, and produce the best shapes and
designs in the industry.
Some of our forged pistons offer our new ArmorGlide™ skirt coating,
which is the result of testing, development, and benchmarking through
Wiseco’s rigorous in-house dyno program.
The outcome is the ultimate in skirt coating toughness, lubrication,
and bond technology working together to minimize friction, maximize
horsepower, and provide
improved wear resistance. Not only is ArmorGlide™ a high-tech
lubricant that reduces friction, but it also allows the piston to be
fitted tighter within
the bore allowing a better ring seal and reduced noise from piston
2-stroke kits feature our Pro-Lite™ pistons that
are CNC machined for optimal cam shape and profile for peak HP and
Each piston is built from race proven designs that
are chosen by the top race teams in all forms of racing including
Supercross, Motocross, GNCC, Superbike, and more.
4-stroke kits feature a ‘race-ready’ dome finish
with smooth edges for improved combustion flow. Horizontal slot-pin
oiling reduces friction and provides scuff resistance, along with a
pressure seal groove for maximum ring seal.
4-stroke race applications feature Wiseco’s
ArmorGlide™ skirt coating to provide reduced friction and noise to
contribute to increased horsepower.
Dedicated forgings used for superior strength to weight ratio utilizing aerospace alloy.
High Performance ring kit and alloy pin included
with each piston kit for extended life and sustained power.