Straightline’s single pipes produce a wider power band, with great bottom end power, and improved top end speed. The Straightline Polaris 900R single pipe powerband is changed to create a torque monster. Power from 8100-8300 rpm with no loss and improved torque! The midrange gains are the most impressive in the industry with great response, hole shots, and that mid range pull that wont quit. When changes in mid range power, and peak power this much a change in clutching is required.