ISR Performance Pro Series Coilovers - Subaru Impreza (STI ONLY) - 08-13

The ISR Performance Pro Series Coilovers for the 2008-2013 Subaru Impreza STI are the higher-end coilover tier built for the GRB chassis. 32-way adjustable damping, mono-tube design, 8K front / 10K rear spring rates, front pillow-ball upper camber mounts, and Japanese bearings throughout. STI-only fitment. will not fit non-STI Impreza or WRX models.

What It Does

Coilovers replace your factory shock-and-spring setup with adjustable damping, ride height, and stiffer spring rates. The mono-tube design handles sustained track abuse better than twin-tube alternatives. 32-way damping gives you the range to tune from a daily-driver compromise to track-day stiff. The 8K front / 10K rear spring rate is the inverse of the typical 240SX setup, reflecting the Subaru's weight distribution and the more front-driven cornering balance the STI was tuned around.

Pro Series vs Basic Coilovers

Our Basic Coilovers are validated on Enjuku Racing Formula Drift cars. The Pro Series is the upgrade above the Basic line, with better damping control under sustained load and the mono-tube body construction.

Fitment

2008-2013 Subaru Impreza STI only. Will not fit non-STI Impreza, WRX, or other Subaru models. STI-specific suspension geometry.

Product Details

Brand: ISR Performance

Part Number: IS-PRO-GRB

Type: Pro Series Coilovers

Vehicle Fitment: 2008-2013 Subaru Impreza STI (GRB chassis)

Excluded: Non-STI Impreza, WRX

Damping: 32-way adjustable

Body Design: Mono-tube

Spring Rates: 8K front / 10K rear

Upper Mounts: Front pillow-ball camber adjustable

Bearings: Japanese

Sold: Complete set (4 corners)

Legality: Off-road and competition use only