Cobb Tuning Mazda Knob - White Knob w/ Race Red - 271350-W-RD 10 Micron DN3-XTSS kit features an Xtreme

DN3-XTSS kit features an Xtreme pressure plate for the most demanding driver

Some of our competitors require that you frequently perform a free-air calibration procedure to calibrate their O2 sensors

Smooth End Tank Internal Contours - Designed for maximum flow

Longer spring for wider range of adjustment (40-130 PSI)

Purchase the Heater Core Delete Kit if you want to remove the thermostat housing heater tube as well

Cobb Tuning Mazda Knob - White Knob w/ Race Red - 271350-W-RD 10 Micron DN3-XTSS kit features an XtremeEMISSIONS This part is not an emissions related part and therefore can be used on Emission Controlled Vehicles. DESCRIPTION The COBB Knob is designed to keep those extended shifting sessions exhilarating. The billet aluminum base is anodized in your choice of red or black to help set the mood and is internally threaded to provide a tight fit onto the shifter shaft that won't come loose in the most frenzied of gear changes. The satin black delrin knob