Better ride quality and improved handling are some of the reasons that make a suspension upgrade one of the crucial upgrades one must do to their Subaru WRX/STI. If you want to improve your vehicle’s performance and are looking for the best suspension kits for your car, look no more. In this article we are going to share the top 5 best suspension kits that are made to perfectly fit your Subaru WRX/STI, on top of that most of the systems shared in this article are quite affordable.
1. BC Racing BR Type Coilovers
We recommend the BC Racing BR Type Coilovers Subaru STI | WRX 2015-2021 for your Subaru WRX/STI. Available in our shop for $1,195, this coilover is perfect for street driving and occasional road course duty. With this coilover, you get the power to choose how low or high you want your vehicle, there’s no preset ride height. This kit is different as it comes with pillow ball mounts to provide the most feedback possible from your suspension and to sharpen your steering response.
Features:
- Mono-tube shock design
- 30 levels of damping force adjustment, adjust compression/rebound
- Pillowball mounts and adjustable camber plates included (where applicable)
- Adjustable rear camber plates are available
- Separate full-length height adjustable
- One year warranty
- Rebuildable
Fitment:
- Subaru STI | WRX 2015-2021
Apart from the BR Type coilovers, BC Racing has other types in the catalog including the DS Series which is famous for having BR benefits with digressive pistons added to the design. There are the ER Series coilovers which have high quality and unique features found on the BR and RM series but they also have the additional benefit of external reservoirs and the ability to allow the end user to individually adjust and set compression and rebound damping rates, the RM series coilover on the other hand, come with all of the benefits of the BR series including the 30 click adjustment and separately controlled ride height etc, but improves the design with an inverted monotube damper.
There is also the HM Series which many refer to the series as the perfect combination of the ER and RM series and the ZR Series which offers a 3-way adjustable track-ready coilover system and an independent low-speed and high-speed compression adjustment and separate rebound adjustment. We have recommended the BR, and we know that it is the best option for most Subaru WRX drivers because they offer good customization especially when it comes to height adjustability. ideal for entry-level and daily drivers and also for the occasional track day, the BR series also features 30 clicks of simultaneous compression and rebound adjustments allowing drivers to adjust damping for their application easily. You can check out the BC Racing series in our shop HERE.
2. HKS Hipermax S
This $1,628.95 suspension kit by HKS is now available in our shop. HKS has a reputation for making well-integrated, reliable, and environmentally sound performance systems, and the HKS HIPERMAX S WRX STI Full Kit Subaru WRX | STI 2015-2021 delivers in quality and performance. This kit was made by integrating the new technologies and renewing the three existing MAXIV GT Series into HIPERMAX S. After 9 years since the launch of MAXIVGT, this new series will have all three conventional model’s characteristics and will be evolved by damping force characteristics, durability, and beauty.
Features:
- Dual PVS. We evolved the existing preload valve system to the dual preload valve system to suppress the generation of unnecessary damping force during higher piston speeds. This provides a major improvement in ride comfort without influencing driving performance.
- Wide Range Damping Force Adjustment Mechanism. The improved shape of the Needle Jet expands the range of damping force adjustment. This makes us possible to handle driving on a wider range of stages.
- Evolution of Bump Stop Rubber. A new shape of bump stop rubber reduces the body roll and achieves ride comfort at the same time which cannot be achieved with general hydro bump stop rubber.
- Low Friction Technology. With advanced tribology technology, we have achieved even higher durability and lower friction than conventional products. This technology contributes to improved ride quality and handling performance.
- 3-Years Warranty. Compared to the one-year warranty period of the conventional MAX V GT series, the HIPERMAX S Series has a three-year warranty due to the optimization of internal parts and quality improvement.
- Single Tube
- 30 Levels Adjustable Damping
- Shock-Body Length Adjustable
- Special Oil
- PNE Coating
- Dual Pre-Load Valve System
- Aluminum Bracket
- Rubber Upper Mount
- Spec. Change Available
- Overhaul Available
Fitment:
- Subaru WRX | STI 2015-2021
- Subaru WRX 4D 2015-2021
3. H&R RSS
For 50 years ago, H&R Special Springs has been manufacturing the highest quality premium suspension components available on the market, their H&R RSS Coilover Subaru STI 2015-2021 is available in our market for $1,598. H&R Coilovers features an innovative mono-tube gas shock construction. Using premium quality materials, H&R engineers fine-tune each Coilover shock with a progressive rate spring to ensure better handling and premium ride comfort. The H&R RSS Coilovers are designed and tested and are for the performance-minded driver that requires the most vehicle feedback.
Features:
- More spring rate and shock valving
- Front: 1.0-1.8
- Rear: 1.0-2.0
Fitment:
- Subaru STi 2015-2021
4. TEIN FLEX Z Coilover Kit
For an affordable price of $1,121.95, you can buy the TEIN FLEX Z Coilover Kit Subaru WRX STI VAF 4WD 2015-2021. FLEx Z has inherited all the features and quality of STREET FLEx but the adoption of a new platform allows its price to be set at an amazingly low range. FLEx Z maintains the “Made in Yokohama” quality while being extremely affordable compared to its predecessors. This affordable kit features a ride height adjustable shock absorber, fully loaded with TEIN’s comprehensive technology.
Features:
- Twin-Tube System
- Full-Length System for Ride Height Adjustment w/Minimal Change in Ride
- Damping Force Adjustable to Change Ride to Desired Settings
- Compatible w/EDFC Series
- Smooth Ride Height Adjustment & One-of-A-Kind Adjusting Wrench
- No-Sag Springs
- High-Spec Damper Oil
Fitment:
- Subaru Wrx STI 2015-2021
In Tein’s coilover catalog, you will also find the Street Basis Z, Flex Z, Flex A, and Mono Sport options. The Street Flex is intended for a performance street-driven vehicle utilizing hard rubber bushings which allow good suspension response while decreasing noise to the cabin. At the same time, the Mono Sport is dual purpose street/track coilover suspension. Flex Z recommended above was designed to be used by those who are more after a suspension that has new shocks and adjustable height springs but doesn’t need camber adjustment or damper adjustment while Flex A uses a twin-tube system, in pursuit of ride comfort on streets, and it is equipped with new feature “Hydraulic Bump Stopper (H.B.S.)” which has been tested and proven effective in the world-class rallies. You can check out these Tein coilovers by clicking HERE.
5. Forture Auto 500 Series
The Fortune Auto 500 series damper shaft seals have 40% less drag than our previous models, and they’re available for just $1,799 in our shop. This kit will greatly improve your vehicle’s quality and performance. Fortune Auto is a US-based suspension company that develops race-winning suspension systems for both European and Japanese vehicles. Their $1,799 Fortune Auto 500 Series Coilovers Subaru STI VA2 2015-2021 has an increased adjustment range which provides a larger range for more accurate damper control. With this system, Fortune Auto has been able to reinforce brackets and mounting points for more rigidity and strength.
Features:
- Bright Dipped Anodized
- Revised Jetting
- Stronger Piston Shafts
- Structural Improvements
- Digressive Pistons
- Dyno Tuned and Tested
Fitment:
- Subaru BRZ 2013-2015-2021