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Collection: Speedwerx

SPEEDWERX - Straight-Up USA Horsepower since 1994
 
The roots of Speedwerx go back to the 80’s and 90’s, when owner Steve Houle was designing and building parts for his own race sleds. His innovative ideas spoke for themselves as he proved to be a dominating force in snowmobile racing, winning many races and multiple world championships along the way. Soon other competitors and consumers were asking for their own race-proven parts, and that led to the creation of the Hot Seat Performance brand in 1994, and the Speedwerx brand in 1999.
 
For over 25 years, the Speedwerx family has been committed to winning. Whether it is on the race track with our own machines, or helping our customers achieve their goals with our products, Speedwerx is a proven winner in many different racing disciplines including Snowmobiles, ATV’s, UTV’s, PWC’s, and Dirt Track Racing Cars. With 183+ World and National titles, 31 X-Games Medals (15 Gold!), and Thousands of trips to Victory Lane, Speedwerx is known and respected worldwide as an industry icon that sets the bar when it comes to performance, quality, and service.

The staff here at Speedwerx takes pride in our work and the products we manufacture. Most of our products are made right here in the USA and we feel that this is as important to our customers as it is to us. Our products are designed to perform in the toughest and most demanding conditions and are thoroughly tested with thousands of laps on the track and thousands of miles on the trails and in the backcountry every year. If you’re searching for the best performing and highest quality parts for your Arctic Cat, Polaris, or Ski-Doo Snowmobile, ATV, UTV, or your Dirt Track Race Car, look no further than Speedwerx.
50 products
  • Speedwerx - Arctic Cat Catalyst 858 L2 Competition Series Lightweight Titanium Muffler // 2025 Arctic Cat ZR/RIOT/M 858 C-TEC2 Catalyst
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    Speedwerx
    Regular price
    $699.95 USD
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    $699.95 USD
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  • Speedwerx - Arctic Cat Catalyst 858 L2 Competition Series Lightweight Muffler // Stainless Steel // 2025 Arctic Cat ZR/RIOT/M 858 C-TEC2 Catalyst
    Vendor
    Speedwerx
    Regular price
    $399.95 USD
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    $399.95 USD
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  • Speedwerx - Arctic Cat Catalyst 858 Lightweight Muffler // Ceramic Coated // 2025 Arctic Cat ZR/RIOT/M 858 C-TEC2 Catalyst
    Vendor
    Speedwerx
    Regular price
    $399.95 USD
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    $399.95 USD
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  • Speedwerx - Arctic Cat Catalyst 600 L2 Competition Series Lightweight Muffler // Stainless Steel // 2024 Arctic Cat ZR/RIOT/M 600 C-TEC2 Catalyst
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    Speedwerx
    Regular price
    $399.95 USD
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    $399.95 USD
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  • Speedwerx - Arctic Cat Catalyst 600 Ceramic Coated Lightweight Muffler // 2024-2025 Arctic Cat ZR/RIOT/M 600 C-TEC2 Catalyst
    Vendor
    Speedwerx
    Regular price
    $399.95 USD
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    $399.95 USD
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  • Speedwerx - Arctic Cat Billet Aluminum Adapt Clutch Cover
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    Speedwerx
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    $189.95 USD
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    $189.95 USD
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  • Speedwerx - 2025 Arctic Cat CATALYST M 858 C-TEC2 Hypershift Clutch Kit - Stock Pipe
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    Speedwerx
    Regular price
    $549.95 USD
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    $549.95 USD
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  • Speedwerx - Arctic Cat ADAPT Clutch Hypershift Dual Adjustable Clutch Weights - Set of 3 with Bushings
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    Speedwerx
    Regular price
    $212.70 USD
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    $212.70 USD
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  • Speedwerx - Arctic Cat ADAPT Clutch Hypershift Weight Adjustment Screw Kit
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    Speedwerx
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    from $15.95 USD
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    from $15.95 USD
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  • Speedwerx - Lightweight Spring Cup // 2022-2025 Arctic Cat
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    Speedwerx
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    $139.95 USD
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    $139.95 USD
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  • Speedwerx - R2 Series Bearing Roller // ADAPT Driven Clutch
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    Speedwerx
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    $38.95 USD
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    $38.95 USD
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  • Speedwerx -Lightweight Recoil Starter Cup 2024-2025 600 /858 Catalyst // 2018-2024 ZR / Riot / XF / M 8000 Models SPXLWRC
    Vendor
    Speedwerx
    Regular price
    $114.95 USD
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    $114.95 USD
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  • Speedwerx - Panel Vent Kit // 2024-2025 ZR / RIOT / M Catalyst - Top of Hood
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    Speedwerx
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    $62.95 USD
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    $62.95 USD
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  • Speedwerx - Panel Vent Kit // 2024-2025 ZR / RIOT / M Catalyst - Front Bellypan
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    Speedwerx
    Regular price
    $59.95 USD
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    $59.95 USD
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  • Speedwerx - Panel Vent Kit // 2024-2025 ZR / RIOT / M Catalyst - Side Panels
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    Speedwerx
    Regular price
    $59.95 USD
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    $59.95 USD
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  • Speedwerx - Manual Chain Tensioner // 2012-2024 Arctic Cat ACMCT
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    Speedwerx
    Regular price
    $129.95 USD
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    $129.95 USD
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  • Speedwerx - Panel Vent Kit, 2018-2024 M 6000 / M 8000 Ascender / Blast - 2021-2022 Yamaha Mountain Max / SX Venom ACM18VK
    Vendor
    Speedwerx
    Regular price
    $124.95 USD
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    $124.95 USD
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  • Speedwerx - Arctic Cat Billet Track Tensioner Block Kit
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    Speedwerx
    Regular price
    $57.95 USD
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    $57.95 USD
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  • Speedwerx - Arctic Cat High Flow Y-Pipe, 2018-2024 ZR / RIOT / XF / M 8000 / 800 C-TEC2 AC800Y-6
    Vendor
    Mountain Side Performance
    Regular price
    $249.95 USD
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    $249.95 USD
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  • Speedwerx - Arctic Cat High Flow Y-Pipe, Ceramic Coated, 2018-2024 ZR / RIOT / XF / M 8000 / 800 C-TEC2 AC800Y-6-CC
    Vendor
    Mountain Side Performance
    Regular price
    $249.95 USD
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    $249.95 USD
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  • Speedwerx - Arctic Cat L2 Competition Series Ceramic Coated, Lightweight Muffler, 2018-2024 ZR / Riot / XF / M 8000 / 800 C-Tec2 / Yamaha Mountain Max 800 AC800M-12
    Vendor
    Speedwerx
    Regular price
    $399.95 USD
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    $399.95 USD
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  • Arctic Cat C-Tec 800 Moto Tassinari VForce 3 Reed Cages
    Vendor
    Mountain Side Performance
    Regular price
    $258.95 USD
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    $258.95 USD
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  • Speedwerx - Arctic Cat Stage 2 Exterminator Kit // 2020-2021 M 8000 / Riot X 8000 ACM8000EXT-20-2
    Vendor
    Speedwerx
    Regular price
    from $2,348.59 USD
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    from $2,348.59 USD
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  • Speedwerx - Arctic Cat Stage 2 Exterminator Kit // 2018-2019 M 8000 / XF 8000 High Country ACM8000EXT-2
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    Speedwerx
    Regular price
    from $2,673.32 USD
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    from $2,673.32 USD
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