Cobb Tuning Mazda Knob - White Knob w/ Race Red - 271350-W-RD 10 Micron Some of our competitors require

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

This can be done by soldering in the pigtails (included with purchase)

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

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

Cobb Tuning Mazda Knob - White Knob w/ Race Red - 271350-W-RD 10 Micron Some of our competitors requireEMISSIONS 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