HMF Racing Arctic Cat Thundercat 1000- Performance-Series Slip On 08-14The Arctic Cat Thundercat 1000 is available as a Slip On system in the Performance, Titan and Swamp (with snorkel) exhaust. Depending on the exhaust series, the slip on system picks up 10 15% more horse power and torque throughout the power curve, and remains substantially less that the stock exhaust. The Performance, Titan XL and Swamp XL are roughly 4 6dB louder than the stock muffler, while the Titan QS and Swamp are 1 2dB louder. All exhausts can