TWIN TUNER II 07-21 XL & 01-11 TC W/ 36 PIN Category_Default Category/SLED/Polaris/Matryx 9R delivering a ride that's 2

delivering a ride that's 2 lengths faster than a stock 858 sled

**Additional Details:**

these mufflers require no clutching modifications

this system maximizes power delivery across the RPM band

This 4" aluminum tube offers a 25% larger diameter

TWIN TUNER II 07-21 XL & 01-11 TC W/ 36 PIN Category_Default Category/SLED/Polaris/Matryx 9R delivering a ride that's 2The Twin Tuner II has all of the features of the Twin Tuner and also allows retarding of the spark timing up to 10 to help prevent pre ignition knocking. The user interface consists of up down pushbuttons and a bright daylight readable LED display to select and change the fuel trim and spark retard in the RPM and throttle position ranges required by most applications.