Perrin Rear Diff Subframe Lockdown System WRX/STI 2002-2007 | PSP-SUS-525 Specials Standard Top Mount Spring Rate(Front)

Standard Top Mount Spring Rate(Front) 7 kg/mm (392 lbs/inch) Spring Rate(Rear) 7 kg/mm (392 lbs/inch) Spring Length(Front) 250 mm Spring Length(Rear) 210 mm Spring Inner Diameter(Front) 107 mm (4

even under demanding performance use

stylish look

Retains horn and turn signal functionality (in most cases)

clean welds built for high-performance heat cycles

Perrin Rear Diff Subframe Lockdown System WRX/STI 2002-2007 | PSP-SUS-525 Specials Standard Top Mount Spring Rate(Front)The Perrin Rear Sub frame Lockout is designed to eliminate differential to chassis movement between the rear sub frame and the uni body. Acceleration and throttle response is improved and much more linear very important for autocross, drift, and drag racing. The Perrin piece will eliminate all flex between cornering, acceleration and braking forces being applied to the suspension and chassis. This Perrin kit offers such a big improvement in the