FREE Tshirt with every Subaru WRX/STI Throttle Body! Posted by admin on March 11, 2015 Posted in: Boomba Racing. Posts navigation ← Boomba Racing 220g Weighted Shift Knobs for the 2015+ Ford Mustang now available! GROUP BUY TIME AGAIN! 15+WRX Short Shifters 10+ buyers, 15% OFF!!! →