The SPI pipe (straightline performance) produces from 3-18hp gain depending on application. SPI Single pipe produces a wider power band, with great bottom end power, and improved top end speed. Comes ceramic coated for under hood temps and improved performance.
Arctic Cat
SPI single pipe Arctic Cat F, M, XF 800 12-13, M, XF, ZR 8000 14-15 #241-2007