Check the listing for details. Koronis (KPI) Rumble Pack Single Canister Silencer 331-209. Condition: New. Listed at 237.99 USD. Genuine Koronis Products: Founded in 1967 by Ed Webb, Koronis Parts Inc. started building snowmobile parts one at a time out of a small shop in Spicer, MN. Ed’s attention to detail and his enthusiastic approach to the industry created a winning combination for continued growth over the last 40 years. Ed continues to be actively involved in the company and has assembled a quality group of professionals to keep the company aggressive and performing well. Koronis is the back bone to an expanding line of products and brands that cover the snowmobile, motorcycle, UTV and automotive markets through traditional aftermarket distribution. Product Details: Extra kick with less weight Unique first in the industry; Dual Stage acoustical design Pull up to five more horsepower from the sleds motor, depending on the application Saves up to 9 lb. of dead weight Rumble Pack Silencer Kits attach to stock exhaust pipes and include complete instructions No modifications to belly pan required for installation Available in triple- or single-canister designs with nickel-chrome plating for a lasting finish About Us: LeClare Powersports is a small-town Parts and Accessories store in Springfield, MO. Our low overhead allows us to offer better prices than the 'Big Boys', but our owner-operated store allows us to give our customers the great customer service they deserve. We only sell brand new, high quality GENUINE name-brand aftermarket parts...no junk, no knock offs and no "seconds". Buy with confidence!