Competition Spec PRO210 Race Spring
Spring rates are tuned to provide high stability and favorable handling characteristics with a neutral front and rear balance. PRO210 was developed for extreme durability and balance. This spring has the highest tensile strength available due to our patented manufacturing process. For professional suspension tuners, custom rates and sizes are available.

Adjustable Dampening Levels
Dampening levels are user selectable in either 4 way front and/or 8 way rear increments. The actual range of dampening force during adjustment is extremely wide, so each 'click' makes a huge impact on driving characteristics. True dampening force is independent of the number of 'clicks' a system may have, where a 4 way system might actually have more dampening force than a 16, 32, or 64 way system! The simple ease of adjustments and wide difference in each setting eliminate unnecessary adjustments.

Short Stroke, Shortened Case Dampener
Short stroke and shortened case of the S-S dampener allows for the vehicle to be lowered aggressively, without compromising suspension stroke or comfort.

High Performance Internal Valving
The valving of this system is highly unique in that it uses a variety of check valves and internal valving unique to Sustec Pro suspensions, that cannot be found in most other systems available. Valved for high levels of performance, The S-S dampener is also considerably comfortable for non motorsports driving. This is due to the unique valving of the system that allows excellent performance, without sacrificing comfort.

Low Pressure Gas, unique Dual Chamber Design
Not all dual chamber dampeners are created alike. The S-S features a unique, highly advanced dual chamber design that ensures maximum durability and endurance. Low pressure gasses allow extremely smooth rebound characteristics. S-S is highly unique in that performance, durability and comfort can co-exist.

Helper Spring
Helper springs assist with rebound stability, ride comfort and keep the main coil spring seated. Preload of the main spring can also be set to zero, for maximum comfort and suspension travel. Non helper spring models are also available for a lower cost! Click here to see the Type II model.

Durable Spring Seat & Lock Nut
Constructed of forged aluminum, longetivity and superior strength is ensured. Additionally, the threaded portion of the casing is chemically treated to resist rust and corrosion.

Optional Pillowball Upper Mounts
The S-S installs with factory uppermounts, for a simple bolt on installation. Alternately, some kits include solid pillowball uppermounts for a solid mount, and precise handling feel. Pillowball uppermounts reduce the mount of play in the suspension and reduce suspension geometry changes while under heavy loads. Some of our pillowball uppermounts also have camber adjustment, which can correct or alter camber settings beyond factory ranges. Pillowball Upper Mounts are available for most S-S and S-S Type II suspensions.

Highest Quality
We take great pride in that all of our products are made in-house, 100% in Japan. Quality craftsmanship is found in all Sustec Pro suspensions, which is also certified by the highest manufacturing standard in the world, ISO9001. These systems are bolt-on, and are built extreme reliable for maximum enjoyment in motoring. Due to the durability, and extended lifespan of our suspensions, we do not need any rebuild or overhaul facility. Sustec Pro suspensions are quality systems with virtually a 0% failure rate.

Replacement Parts Program
In the unfortunate event that your suspension is damaged in an accident, or in the rare case of a defect, we carry a very special replacement parts program where parts can be replaced with brand new items at a low cost, or new replacements fully covered if within the warranty period and conditions. This program avoids high costs associated with sending kits in for expensive overhauls, which can take months. With the new replacement parts program, cost and downtime is minimized so you can enjoying motoring faster!