03-170-21N (Top 21 Teeth 11 Link Wide sproket 13 spline)

SPI  Provides quality aftermarket Snowmobile parts and accessories that deliver on use and performance. Because we keep in close contact with our Dealer Network, You can be assured of the Functionality and Quality of SPI. Unlike other companies whose main goal is set on pricing, We never source our aftermarket products in such a way. Each SPI product is specially designed to work as well or better than that of the Original Equipment’s part it replaces. If we wouldn’t put it on our own machines, we wouldn’t put it on yours- That’s the SPI promise. All SPI products are tested before shipment to maintain the high level of quality that snowmobilers worldwide demand and most of the factories we use are ISO certified. PRODUCT SPECIFIC TESTING INCLUDES:

• Electrical testing reports.
• 100% testing on cylinders.
• 3D scanning and constant material analysis on pistons.
• QC procedures on every step of the piston manufacturing process.

SPECIALIZATION Our specialization in winter power sport products allows us to focus on materials and designs that won’t be compromised by cold temperatures or rough backcountry riding. We strive to keep you out of the shop and on the trails. SPI is your source for quality aftermarket snowmobile parts that deliver on quality and performance at a phenomenal value. We are committed to providing quality products for your machine because we live and breathe this sport and want to ensure all of you are able to get out and ride! We hold our products to high-standards and quality, which is the heart of our mission. With SPI your riding experience will be better than ever no matter where the snow takes you!