BORLA 140312 Cat Back Exhaust System IMP WRX STI 08- 09 2.5L ymm_81 000˝ Grip Length n/a˝ Thread

000˝ Grip Length n/a˝ Thread Diameter-Pitch 1/4-28 Grip Diameter 1/4˝ Wrenching 5/16˝ Head Height 0

BMW 13717548897

Base Outside Diameter O2 (mm): 75

Available in choice of black oxide finish chrome moly or corrosion resistant stainless steel

1 = CP5990-107

BORLA 140312 Cat Back Exhaust System IMP WRX STI 08- 09 2.5L ymm_81 000˝ Grip Length n/a˝ ThreadDescription BORLA 140312 Cat Back Exhaust System IMP WRX STI 08 09 2. 5L BORLA Performance offers a quad exit Cat Back exhaust system for the 20082014 Subaru WRX STi. This race inspired system (PN140312) is designed to enhance the performance of the flagship model. The exhaust plumbing has been upgraded from 2. 5" to 3" in diameter, resulting in increased airflow and horsepower gains of 7% to 10%. The system muffler is positioned higher than the