ISR Performance Pro Series Coilovers - Nissan 240sx 89-94

The ISR Performance Pro Series Coilovers for the 1989-1994 S13 240SX are the higher-end tier above our Basic Coilovers. 32-way adjustable damping, mono-tube design, 8K front / 6K rear spring rates, front pillow-ball upper camber mounts, and Japanese bearings throughout. Built for the same construction philosophy as the S14 variant, sized for the S13 chassis.

What It Does

Coilovers replace your factory shock-and-spring setup with adjustable damping, adjustable ride height, and stiffer spring rates dialed in for performance use. The Pro Series mono-tube design handles higher damping forces than twin-tube designs without overheating under sustained track use, and the 32-way damping adjustment lets you tune the same coilover for daily driving and track days. Front pillow-ball upper camber mounts let you dial in front camber directly at the top of the strut, replacing the rubber upper mount with a deflection-free bearing.

Pro Series vs Basic Coilovers

Our Basic Coilovers are validated on Enjuku Racing Formula Drift cars. The Pro Series is a meaningful upgrade above that baseline: better damping control under sustained load, the mono-tube body, the front pillow-ball mounts. Same shop validation lineage, more capability for harder use.

Fitment

Designed for the Nissan 240SX 1989-1994 (S13 chassis). For the S14 variant, see IS-PRO-S14 (95-98, same Pro Series construction).

Product Details

Brand: ISR Performance

Part Number: IS-PRO-S13

Type: Pro Series Coilovers

Vehicle Fitment: Nissan 240SX 1989-1994 (S13)

Damping: 32-way adjustable

Body Design: Mono-tube

Spring Rates: 8K front / 6K rear

Upper Mounts: Front pillow-ball camber adjustable

Bearings: Japanese

S14 Variant: IS-PRO-S14

Sold: Complete set (4 corners)

Legality: Off-road and competition use only