New to Powersport Superstore? Try our Year-Make-Model search and find the right parts for your ride by clicking "My Garage" on the upper-right! ➡

SPI

1804 products
Brand Show all Brand
Vehicle Type Show all Vehicle Type
Price
  • -
Show all Price
Vehicle Fitment Combos Show all Vehicle Fitment Combos
34% Off
Spi SU-04295 Rear Gas Suspension Shock
$107.50
$107.50
$163.95
Opened Length: 420mm. Closed Length: 280mm. Eye Diameter Body: 14.5mm. Eye Diameter Shaft: 15.9mm. Sold each.Vehicle Fitment:2015-2018 Polaris 550 INDY Adventure 144 2015-2018 Polaris 550 INDY Adv...
37% Off
Spi SU-04297 Rear Gas Suspension Shock
$160.11
$160.11
$252.95
Opened Length: 425mm. Closed Length: 287mm. Eye Diameter Body: mm. Eye Diameter Shaft: mm. Sold each.Vehicle Fitment:2012-2016 Polaris 600 RMK 155 2011-2016 Polaris 800 RMK 155
34% Off
Spi SU-04298 Center Gas Suspension Shock
$106.90
$106.90
$162.95
Opened Length: 315mm. Closed Length: 225mm. Eye Diameter Body: 17.7mm. Eye Diameter Shaft: 9.8mm. SPI shocks are designed to work with OEM bushings, springs and collars. Sold each.Vehicle Fitment:...
39% Off
Spi SU-04300S Front Gas Suspension Shock
$159.12
$159.12
$261.95
Sold each. Note: Hazardous materials will be shipped ground (NO EXCEPTIONS).Vehicle Fitment:2009-2013 Polaris 550 IQ Shift 2011-2013 Polaris 550 Shift 136 2011-2015 Polaris 600 IQ LXT 2009-2012 Pol...
39% Off
Spi SU-04303S Front Gas Suspension Shock
$151.74
$151.74
$248.95
Sold each. Note: Hazardous materials will be shipped ground (NO EXCEPTIONS).Vehicle Fitment:2007-2009 Arctic Cat M1000 EFI 153 2008-2009 Arctic Cat M1000 EFI 153 Sno Pro 2007-2009 Arctic Cat M1000 ...
35% Off
Spi SU-04308 Rear Gas Suspension Shock
$111.64
$111.64
$170.95
Sold each.Vehicle Fitment:2004 Ski-Doo Elite 2001 Ski-Doo Formula Deluxe 500 2000-2001 Ski-Doo Formula Deluxe 600 2000 Ski-Doo Formula Deluxe 700 2000 Ski-Doo Formula Z 600 2000 Ski-Doo Formula Z 7...
39% Off
Spi SU-04318S Gas Shock Assembly - Rear
$163.66
$163.66
$269.95
Gas Shock Assemblies.
37% Off
Spi SU-08000 Ski Gas Shock
$66.29
$66.29
$105.95
Sold each. Note: Hazardous materials will be shipped ground (NO EXCEPTIONS).Vehicle Fitment:2003 Ski-Doo MX Z 500 Adrenaline 2003 Ski-Doo MX Z 600 Adrenaline 2003 Ski-Doo MX Z 700 Adrenaline 2003 S...
39% Off
Spi SU-08009 Ski Gas Shock
$139.26
$139.26
$226.95
OEMNo:1603-027. Open: 14.25in. Closed:9.75in.. Sold each. Note: Hazardous materials will be shipped ground (NO EXCEPTIONS).Vehicle Fitment:1999 Arctic Cat Powder Special 600 EFI LE 1999 Arctic Cat...
33% Off
Spi SU-08010 Gas Slide Shock - Ski
$87.39
$87.39
$129.95
OEMNo:0603-420. Open:14.25in. Closed:10.25in. SPI shocks are designed to work with OEM bushings, springs and collars.Vehicle Fitment:1992-1993 Arctic Cat EXT 550 1992-1993 Arctic Cat EXT 580 Mount...
36% Off
Spi SU-08011 Ski Gas Shock
$96.68
$96.68
$151.95
OEMNo:0603-555. Open:13.5in. Closed:9in.. Sold each. Note: Hazardous materials will be shipped ground (NO EXCEPTIONS).Vehicle Fitment:1995-2000 Arctic Cat Bearcat 340 1995-1998 Arctic Cat Bearcat ...
38% Off
Spi SU-08013 Ski Gas Shock
$114.85
$114.85
$183.95
Sold each. Note: Hazardous materials will be shipped ground (NO EXCEPTIONS).Vehicle Fitment:1987 Ski-Doo Escapade 2000 Ski-Doo Formula 500 LC 1997 Ski-Doo Formula 583 1997 Ski-Doo Formula Deluxe 50...
36% Off
Spi SU-08014 Ski Gas Shock
$134.10
$134.10
$208.95
Length Open 13 1/2in. Length Closed 10in. Bushings Body Included. Bushings Shaft Included. Sold each. Note: Hazardous materials will be shipped ground (NO EXCEPTIONS).Vehicle Fitment:1996 Ski-Doo ...
35% Off
Spi SU-08024 Gas Slide Shock - Ski
$109.86
$109.86
$167.95
Length Open 17-1/2in. Length Closed 12-3/8in. Eye Diameter Body 14.5 mm. Eye Diameter Shaft 14.5 mm. Bushings Body Included. Bushings Shaft Included SPI shocks are designed to work with OEM bushin...
36% Off
Spi SU-08203 Gas Slide Shock - Ski
$148.29
$148.29
$232.95
Length Open 16-1/4in. Length Closed 12-1/8in. Eye Diameter Body10 mm. Eye Diameter Shaft 10 mm. Bushings Body Included. Bushings Shaft Included SPI shocks are designed to work with OEM bushings, s...
35% Off
Spi SU-08246S Gas Shock Assembly - Front
$177.40
$177.40
$271.95
Gas Shock Assemblies.
37% Off
Spi SU-08247S Front Shock Assemblies
$176.68
$176.68
$280.95
Front Shock Assemblies.Vehicle Fitment:2010-2014 Ski-Doo Grand Touring 550F Sport 2010-2011 Ski-Doo Grand Touring 600 Sport 2015 Ski-Doo Grand Touring Sport 550F 2011-2019 Ski-Doo Grand Touring Spo...
41% Off
Spi SU-08249S Front Shock Assemblies
$178.71
$178.71
$303.95
Front Shock Assemblies.Vehicle Fitment:2015-2019 Polaris 550 INDY Adventure 155 2015-2016 Polaris 550 INDY Voyageur 155 2017-2019 Polaris 550 Voyageur 155 2014 Polaris 600 INDY Voyager 2015-2016 Po...
Secure, Trusted, and Encrypted

Protected by industry-leading 256-bit SSL encryption and backed by Shopify’s PCI DSS–compliant infrastructure. Every page, click, and transaction is encrypted and monitored for threats — so you can shop with confidence knowing your data stays protected.

Parts for Every Machine

We stock aftermarket parts, gear and accessories for motorcycles, ATVs, UTVs, snowmobiles, personal watercraft, and even performance cars — all backed by expert support and live inventory.

Real-Time Fitment Accuracy

Search by Year, Make, and Model with confidence. Our proprietary vehicle fitment system ensures you’re only shown what fits — no guesswork, no returns — just parts that fit.

Fast, Trackable Shipping

We ship from over 20 U.S. warehouses — often same or next business day. Every order includes tracking and transparent fulfillment updates from start to finish, all processed through a secure, encrypted checkout.

Quick Links

Ride With Us. Stay Connected.

Follow us for real-time fitment updates, gear drops, and pro tips from the garage. No spam, just parts, tech, and news for riders like you.

Your Garage

Add a Vehicle