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Customer Reviews ⭐️ Lionparts has awesome customer service and can’t thank them enough for their help in getting my order/setup correct! - Tom M. ⭐️ Best customer service I have experienced in a very long time. Product is high quality and fits perfect - Christy ⭐️ LionParts has been very consistent, and helpful finding the necessary parts for my needs! - Curtis ⭐️ Had an awesome experience with Lionsparts! I bought my KFI snow plow from them through Trevor who was very knowledgeable and helpful! - Eric

SPI Piston Kits For POLARIS 550 SUPERSPORT 1999-2008 73.25MM Big Bore

Name: SPI Piston Kits For POLARIS 550 SUPERSPORT 1999-2008 73.25MM Big Bore
Brand: SPI
SKU: M-9256P1-SPI-018-1120-A
Price: 65.20 USD
Availability: InStock

$65.20 ~~$81.95~~

Questions? Call or text us at:1-888-927-3076

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Fitment

Customer Reviews ⭐️ Lionparts has awesome customer service and can’t thank them enough for their help in getting my order/setup correct! - Tom M. ⭐️ Best customer service I have experienced in a very long time. Product is high quality and fits perfect - Christy ⭐️ LionParts has been very consistent, and helpful finding the necessary parts for my needs! - Curtis ⭐️ Had an awesome experience with Lionsparts! I bought my KFI snow plow from them through Trevor who was very knowledgeable and helpful! - Eric

SPI Piston Kits For POLARIS 550 SUPERSPORT 1999-2008 73.25MM Big Bore

Description:

This bore is 0.25MM bigger than stock

Engineered to provide the best possible path for combustion chamber heat transfer to the cylinder walls
All of our pistons, rings. pins and circlips are manufactured to OEM specifications
All individual components are interchangeable with original parts
Piston weight is comparable with original piston

WE ARE PROUD TO BRING YOU THE NEXT STEP IN THE EVOLUTION OF PERFORMANCE POWERSPORTS PISTONS. OUR NEWEST LINE IS MADE FROM A SPACE-AGE ALUMINUM ALLOY WHICH MAINTAINS IT'S HIGH TENSILE STRENGTH UP TO 700°F ( 380°C), 50% HIGHER THAN A CONVENTIONAL CAST PISTON. THIS HIGH TEMPERATURE RESISTANCE SIGNIFICANTLY IMPROVES FATIGUE STRENGTH AND IMPACT TOUGHNESS, WHICH MEANS THAT WE WILL KEEP YOU RIDING LONGER AND HARDER THAN THE COMPETITION.

A machined smooth piston crown should reflect combustion heat while reducing carbon buildup and protecting the top of the piston. Some tests have shown that a machined smooth head can in crease HP and fuel economy by up to 6%.

Brand: SPI
Part Number: SM-09256-1

Fitment: