TWIN TUNER II 08-16 TOURING W/ 73 PIN 2005 Yamaha YZ250F There was a paper filter

There was a paper filter with a single layer of foam

polyester based foam

A new pattern to enhance sand and mud traction and offer more nimble handling

Designed for one handed operation

TWIN TUNER II 08-16 TOURING W/ 73 PIN 2005 Yamaha YZ250F There was a paper filterThe 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. Not legal for use in California on pollution controlled vehicles Check local laws