ISR Performance Suspension Parts

ISR Performance makes affordable suspension parts for drift and track cars, and our 75 listings cover Pro Series coilovers, camber and toe arms, traction and tension rods, solid bushings and steering parts. Prices run from $26.13 to $1,094.50, with most parts for the Nissan 240SX, 350Z and 370Z, Infiniti G and Q cars and the Hyundai Genesis Coupe.

Who ISR Performance is

ISR Performance is a sport compact aftermarket brand. Its website describes the company as a maker of "high quality products for the sport compact aftermarket" and says it uses years of on-track testing to balance affordability and quality. Its catalog runs well beyond suspension, into exhausts, intercoolers, brakes and power steering lines, and its vehicle pages center on Nissan, Subaru, Toyota, Mazda, Hyundai and the FR-S/BRZ.

On a suspension store, ISR is best known in the drift scene: arms, rods and solid bushings for the Nissan S-chassis and Z cars at prices that leave room in the budget for tires. That is what most of our ISR catalog is.

ISR product lines we carry

Counts and prices are from our store in October 2026.

LineWhat it isTypical vehiclesOur price range
Pro Series coilovers (12)Height-adjustable coilovers with adjustable damping240SX, 350Z, 370Z, Genesis Coupe, FR-S/BRZ, E36, Miata, RX-7, 300ZX, R32, STI$1,039.78 to $1,094.50
Camber arms (10)Front upper and rear camber arms, Street Series and standard350Z, 370Z, G35, G37, Q50/Q60, Genesis Coupe, 300ZX/R32$146.30 to $433.68
Toe arms and rods (9)Rear toe adjustment, including bucket delete arms240SX, 350Z/370Z, G37, Q50/Q60, Genesis Coupe$125.40 to $261.25
Traction and tension rods (13)Rear traction rods and front tension rods, standard and Pro Series240SX, 350Z, 370Z, Q50/Q60, Genesis Coupe$114.95 to $261.25
Control and trailing arms (7)Rear upper and lower arms, front lower arms240SX, Genesis Coupe, FR-S/BRZ$146.30 to $344.85
Solid bushings and inserts (8)Subframe, differential and steering shaft bushings240SX, 350Z/G35, Genesis Coupe, BMW E36$26.13 to $229.90
Steering parts (11)Inner tie rods, eccentric lockout kits, rack spacers, power steering lines and kit240SX, 350Z, 370Z, Genesis Coupe$52.25 to $391.88

We also list ISR wheel spacers ($50.16 to $57.48 each), a front and rear sway bar set for the 1989 to 1994 240SX ($182.88), and Genesis Coupe front end links ($132.00).

How to choose between ISR's lines

Street Series vs Pro Series arms

ISR sells many arms in two versions. On our store, Street Series parts for the 350Z and 370Z cost $146.30 to $250.80, such as rear traction rods at $146.30 and rear toe arms at $167.20. On the 240SX, Pro Series versions cost more than the standard ones, for example the 240SX rear upper arm at $146.30 standard and $229.90 Pro Series, and the 240SX rear toe rods at $125.40 standard and $182.88 Pro Series. Pick the Street Series or standard version for a street car that needs alignment range, and the Pro Series version when the car sees regular track or drift use and you want the upgraded build.

Pro Series coilovers

ISR's Pro Series coilovers are $1,039.78 for most cars on our store and $1,094.50 for the BMW E36 and 2008-up STI. A retailer listing for the STI kit describes 32-way damping, a monotube body and front pillowball camber mounts, with 8K front and 10K rear springs on that car. Several of our titles show the spring rates, such as 8k/6k for the 240SX and 300ZX. They are an entry point into adjustable coilovers for a drift or track build.

Bushings and lockout kits

Solid subframe and differential bushings remove slop under power, but they add noise and vibration. They suit dedicated drift and track cars more than daily drivers. Eccentric lockout kits ($52.25 to $83.60) replace the factory eccentric adjusters, which suits cars that run adjustable arms.

Fitment coverage

ChassisISR listingsPrice rangeOur car page
Nissan 240SX S13/S1426$26.13 to $1,039.78240SX suspension
Nissan 350Z / Infiniti G3512$52.25 to $1,039.78350Z and G35 suspension
Nissan 370Z / Infiniti G3710$62.70 to $1,039.78370Z and G37 suspension
Hyundai Genesis Coupe10$83.60 to $1,039.78Genesis Coupe suspension
Infiniti Q50 / Q603$245.58Q50 suspension
Scion FR-S / Subaru BRZ3$151.53 to $1,039.78GR86, BRZ and FR-S suspension
BMW E363$114.95 to $1,094.50BMW E36 suspension

Some parts fit more than one chassis, such as the rear camber arms for the 350Z, G35 and 370Z, so counts overlap slightly. Single coilover kits also cover the 1990 to 1998 Miata, RX-7 FC3S, 300ZX Z32, Skyline R32 GTS-T and 2008-up STI.

Install notes

Arms and rods are bolt-on work with basic hand tools on a lift or jack stands. Set each adjustable arm to the length of the part it replaces before install so the car can be driven to an alignment shop. Solid subframe bushings are a bigger job because the subframe has to be dropped. Whatever you change, finish with an alignment.

ISR compared with alternatives we carry

Megan Racing is the closest match. We list 34 Megan Racing parts for the 240SX, 350Z and Genesis Coupe, from $60 tension rod braces to $213 rear arms, so Megan is often a little cheaper for the same type of part. ISR's advantage is the Street and Pro Series choice on many parts and a deeper range of S-chassis bits like solid bushings and power steering lines. For coilovers, Godspeed coilovers are the budget alternative with wider fitment. See our best coilovers guide for more options.

Warranty terms are set by each brand.

Popular picks

Related guides

Sources

ISR Performance Suspension Parts FAQ

What is ISR Performance known for?
ISR Performance makes sport compact parts, and on the suspension side it is best known for affordable arms, rods, bushings and coilovers for drift cars like the Nissan 240SX, 350Z and 370Z. We list 75 ISR parts from $26.13 to $1,094.50.
How much are ISR Pro Series coilovers?
On our store they cost $1,039.78 for most cars and $1,094.50 for the BMW E36 and the 2008-up Subaru STI.
What is the difference between ISR Street Series and Pro Series?
They are two versions of similar parts at different prices. On our store, Street Series arms for the 350Z and 370Z cost $146.30 to $250.80, and Pro Series parts cost more than the standard versions, for example $229.90 vs $146.30 for the 240SX rear upper arm.
Which cars does ISR Performance make parts for?
Most of our ISR listings are for the Nissan 240SX S13/S14, 350Z, 370Z, Infiniti G35, G37, Q50 and Q60, and the Hyundai Genesis Coupe, with a few for the FR-S/BRZ, BMW E36, Miata, RX-7, 300ZX, Skyline R32 and STI.
Are ISR solid subframe bushings good for a daily driver?
They remove movement under power but add noise and vibration, so they suit dedicated drift and track cars better than daily drivers.
Do I need an alignment after installing ISR arms?
Yes. Adjustable arms and rods change camber, toe or caster, so the car needs an alignment after install.