Our coilovers were designed by our research and development team with over 25+ years of experience. From our in-house QC process, to us taking pride in putting customer service above all else, you can feel confident that Riaction Performance Shocks will be there every step of the way for your suspension needs.

Our standard warranty is 2 years against factory defects. We do offer our Lifetime Labor Warranty for the life of our coilovers. This means that you will never have to pay for the labor costs to rebuild or refresh your coilovers! For more information please check our warranty page here.

Riaction coilovers are built with the intention of being used on the track for motorsport purposes. However, because our coilovers offer 32 levels of damping adjustment, they are comfortable enough to drive on daily, as well as having the ability to go stiffer for your motorsport needs. Who says race cars can't be show cars?

Most of our kits will lower your vehicle anywhere between 1-3 inches. This varies depending on your vehicle.

Please contact Riaction for all of your warranty claims. Our contact information is listed on our website.

Once your product is out of warranty, Riaction offers all parts necessary to refresh or update your coilovers. Because all of our coilovers are covered by our Lifetime Labor Warranty, you would only be responsible for the cost of parts and shipping. *This is only valid for the original owner of the coilovers. Our Lifetime Labor Warranty is non-transferrable.*

SWIFT Springs are an upgrade over our off the shelf springs. They are lighter, provide better response, and better driver control. Please visit www.swiftsprings.com for more information and the benefits of their springs.

This depends on vehicle application. Generally, our coilovers are intended to lower a vehicle, so our coilover assembly is shorter than your OEM units, thus lowering the car even at its highest setting.

Our coilovers are manufactured in Taiwan. However our company headquarters is located in South El Monte, CA. Where all quality control, R&D and custom coilovers are built.

Yes. Your Riaction kit is completely rebuildable. We do all rebuilds at our headquarters facility in South El Monte, CA.

Yes. For all custom valved kits, please contact Riaction Performance Shocks for more information.

This depends on the vehicle that you have, as not all vehicles are equipped with camber plates. If the front of your vehicle is compatible and can benefit from camber plates, your Riaction kit will come with them standard.

The digressive rate piston will retain softer and compliant high speed compression characteristics while having relatively stiff low speed compression characteristics. This makes the coilover more compliant when going over any kind of bumps or uneven pavement, which makes the car more stable. The stiffer low speed characteristics help keep the vehicle stable in high speed performance driving which can give you more confidence at the track.

Yes. We do offer digressive valving as an upgraded option to our standard coilover kits.