RCM 2.5" De-Cat Front Exhaust Pipe UK / Euro Spec Water Pumps while the other boasts a

while the other boasts a wider bolt hole for effortless removal

AMAX - A Skunk2 design that simply maximizes the area under the lift curve but without compromising reliability or valvetrain stability

high-end touch to an otherwise great interior

Running aftermarket camshafts and valve springs with high valve seat pressure and oil that does not have high levels of high-pressure additives such as ZDDP (we recommend an oil with 1200+ppm such as Torco SR-1r

Excellently suited to use on track

RCM 2.5" De-Cat Front Exhaust Pipe UK / Euro Spec Water Pumps while the other boasts aThis RCM exhaust centre front section is designed to fit UK Euro specification Impreza WRX and WRX STi from 2001 to 2005. This simple yet effective modification is designed to allow a freer flow of gases by removal of any restriction caused by the secondary catalytic converter releasing extra power with a slight increase in noise. It is made from the finest quality 2. 5" stainless steel pipe work, flanges and has been hand crafted for your Impreza. It