Not everyone is looking for or needs a stiffly valved adjustable race shock. For those looking for comfort and a return of factory ride quality, an Original Equipment style replacement shock will do just fine. These shocks and struts feature a lower price tag due to a lack of adjustability and features, but aim to stop the bouncing associated with old, worn out or leaking factory pieces.
Of the shocks that fit this criteria, my favorite is the KYB GR-2/Excel-G. Featuring shock valving that is typically no more than 10% stiffer than factory, these shocks add a splash of performance without over-doing it. Add in a cost-effective price point and an industry leading warranty and you have a combo that is tough to beat.
It should be noted that the KYB GR-2 is not intended for use with aftermarket lowering springs. If you have these springs installed on your vehicle and are looking for an alternative to a KONI or Bilstein product, I suggest you check out the KYB AGX Adjustable. It features more aggressive valving and 4-8 way adjustability depending on the application.
KYB products are manufactured for a wide range of light-duty passenger vehicles including cars, trucks, SUVs, and vans. Find a KYB product that's right for your vehicle.
Switching out your vehicle's heavy, factory steel or alloy wheels is one of the easiest bolt-on performance upgrades for your track vehicle. Just by switching to a lighter weight wheel, your car will instantly feel quicker and respond better compared to your stock wheels. The rotational force to get a lighter weight wheel to move and stop is less, therefore the engine and braking system of the car can now respond quicker. Reducing the unsprung weight by switching to a wheel with less weight will also reap benefits when cornering - as the shocks and springs will have less weight to dampen during rebound and compression - keeping the car more stable on the track.
Typically, the answer to a lighter wheel is purchasing a fully forged alloy wheel, however, this option can be expensive. There are many highly engineered cast alloy options that are more affordable and provide a great bang for your buck.
These wheels are designed to achieve the strongest wheel possible using the least amount of material. Many cast wheels are created the opposite way from a track wheel: form over function. The wheel looks good, so people want to put it on their car and dress up their ride. A track wheel is designed to provide the function of being lightweight over the appearance of the chrome clad bling you can add to your car.
Many autocross and road race customers have had excellent results with Kosei K1 Racing, Kosei K1 TS, Enkei RPF1, Enkei PF01, TRMotorsports MT1 and TRMotorsports C1. And some of these wheels start at an astonishing 13.5 lbs. in 15x7!
Looking for a coil-over system for your daily driver, but also want it to perform at the track? One of the most attractive features of the following options is their ride height adjustability. They feature an adjustable spring perch and a threaded shock body. You can thread the perch up and down, allowing you to customize how much lowering you prefer for each corner of the vehicle. These coil-over systems will also let you customize the tuck of the vehicle's corners.
Below are my three favorite track-ready coil-overs available at Tire Rack:
Utilizing Bilstein's shock absorbers that are designed for heat dissipation and ride control, the PSS10 Coil-Over System adds a matched performance spring and threaded ride height adjuster to provide a complete suspension system for your vehicle. The system offers ten vehicle adjustment settings and includes numbered adjusters at the base of the shock body so you know exactly what setting you are on without counting clicks.
The RSS ClubSport Coil-Over Kit is designed for the committed motorsport enthusiast who's willing to relinquish some ride comfort in return for handling performance. The firmest coil-over in the H&R street line, the RSS is the choice for weekend track and club sport events.
KW Variant 3 Coil-Overs are state-of-the-art motorsport technology for proven performance on the streets. Independently adjustable compression and rebound damping allows for custom driving set-ups. The exclusive KW patented system has dual-level valves to provide the adjustment of the rebound damping (comfort) and the compression damping in the low-speed range. High-speed settings for driving comfort are preset by KW engineers.
To find the suspension component that's right for your car, shop by vehicle.
Having already c
hosen the Eibach Pro-Kit Spring Set for my 1997 740i, it's time to turn my attention to the the shocks and struts, known collectively as dampers. The available options include the Bilstein Touring Class, Bilstein Sport and KYB GR-2.
The Touring Class and GR-2 are similar to one another in that they're both premium quality replacements for the stock dampers. They are valved about 10% firmer than the originals to account for the wear that accumulates in other suspension components over time and their goal is to provide ride and handling that equals or exceeds the Original Equipment.
The Bilstein Sport is a high-performance shock absorber designed for use with lowering springs. The mono-tube design, while more expensive to produce, has advantages for heat dissipation, longevity and consistent performance.
Do I spend the money on the Bilstein shocks or save some cash and go back with a factory-equivalent part? The Bilstein Sports are the only replacement shock absorbers that are officially recommended to use with the Pro-Kit springs. Using the Touring Class or GR-2 with lowering springs would void their warranties. While this wouldn't be the first warranty I've ever voided when modifying a vehicle, I think that if I'm going to go through the trouble and expense of replacing them, it's worth doing it right. The Bilstein Sport was the winner and will make a great addition to my BMW 740i.