Yellow Speed Racing® - Pro Plus Racing™ Front and Rear Coilover Kit

The spring seats are made from forged aluminum for durability and rigidity.

Shock body is coated with Electroplating treatment to prevent rust and corrosion in the harsh conditions of motorsport.

For most MacPherson strut models, the brake line bracket is welded manually perfectly to the steel lower mount. A high quality forged alloy aluminum lower bracket is used for Double-A Arm strut type (where applicable). The vehicle ride height can be adjusted easily with the lower bracket by winding up and down to drop and raise. With the lower bracket, it allows maximum suspension travel without affecting the shock stroke.

This 2-way system has twin piston design and features 33 levels of separate rebound and compression damping adjustment settings, which allow excellent control and tuning ability. There are 33 clicks available on rebound, and 33 clicks on compression so a wide range of damping adjustment settings can be made to provide a variety of responses to different road conditions.

This 3-way suspension system features low-speed and high-speed compression dampening adjustment that is how you control the rate at which your shock compresses under force, it enables you to get more control of the chassis platform. Also, it features 50 clicks of high-speed compression, 24 clicks of low-speed compression and 33 clicks of rebound damping adjustment.

Spring bearing top is mounted under the pillowball mount to make the handling more agile and to eliminate the spring noise caused by car cornering. This design enables the spring and the shock to perform together more effectively.

For Front MacPherson strut models, wave alloy steel thrust washer is installed between a lower locking collar and a bottom mount. The wave thrust washer can provide a controlled amount of friction between the lower locking collar and the bottom mount to effectively prevent the lower bracket from spinning around or becoming loose.

The outstanding feature to 2-way Club Performance suspension system is external canister allowing you to adjust the rebound and compression damping separately. The canister comes with either hose or piggyback depending on application.

3-way Club Performance suspension system offers independent low-speed and high-speed compression damping adjustment. It features 50 clicks of high-speed compression, 24 clicks of low-speed compression and 33 clicks of rebound damping adjustment. Drivers are able to fine tune the shocks to their desired dampening rates for different road conditions. The canister comes with either hose or piggyback depending on application.

For suspension systems utilizing a MacPherson strut type, the pillow ball mounts with adjustable camber plates are included fronts and rears (where applicable) to offer direct and complete handling response. However, pillow balls on some applications may create rattling sound (metal-to-metal sound, and this can be found on other brands as well). This is normal and it does not affect the product’s performance.

The needle valve piston is utilized to make the steering more agile and to stabilize the vehicle. A high rigidity 52mm shock body used for MacPherson strut type for extra oil capacity enables the cushioning force to have optimal linear change. High quality oil seals are utilized to withstand high temperatures and to prevent oil from escaping. The piston rod is made from high quality S45C steel and is processed with Thermal Refining and High-frequency Induction Hardening Treatments for rigidity and durability.

Yellow Speed formula damping oil contains high quality deformer to prevent foaming, and the viscosity remains unchanged under any working temperature conditions to ensure that all internal components perform perfectly.