BC Racing ZR Series Coilover System (2015 - 2021 Subaru Impreza STI / WRX - VAB / VAF / VAG) - F-25-ZR
Maximum Damping Control for the 2015 - 2021 WRX & STI
Give your 2015 - 2021 Subaru WRX or STI (VAB / VAF / VAG) true competition-level handling with the BC Racing ZR Series Coilover System - the most adjustable and advanced suspension BC Racing builds. Designed for racers and serious enthusiasts demanding more tuning control than the ER or HM Series can offer, the ZR Series features three-way adjustable damping with 15-click low-speed compression, 12-click high-speed compression, and 30-click rebound adjustment. McPherson-strut Subarus like the VAB/VAF/VAG platform benefit from inverted mono-tube dampers paired with remote external reservoirs, improving heat management and maintaining consistent damping during extended track sessions. Swift Springs come standard, and full height adjustment is maintained independently of preload for optimal geometry and shock stroke.
Performance Highlights
- Inverted mono-tube damper design increases strength and reduces unsprung weight for faster chassis response.
- 15-click low-speed compression adjustment refines roll control, weight transfer, and chassis balance.
- 12-click high-speed compression tuning manages bumps, ruts, and curb strikes with precision.
- 30-click rebound adjustment delivers full control over shock recovery and vehicle stability.
- Remote external reservoirs improve thermal consistency and expand oil capacity for high-load use.
- Steel-braided reservoir lines or rigid stems based on damper orientation and chassis configuration.
- Swift Springs included for improved responsiveness and reduced unsprung weight.
- Independent ride height adjustment preserves full shock travel at any stance.
- Front and rear camber plates included where applicable for alignment precision.
- Pillowball mounts supplied on applications without camber plates.
- Custom spring rates & custom valving available for competition or purpose-built setups.
- Fully rebuildable with a 2-year manufacturer defect warranty.
Quick Specs
- Brand: BC Racing
- Series: ZR Series
- Part Number: F-25-ZR
- Vehicle Fitment: 2015 - 2021 Subaru WRX / STI (VAB / VAF / VAG)
- Damper Design: Inverted mono-tube, linear twin-piston
- Rebound Adjustment: 30-clicks
- Low-Speed Compression: 15-clicks
- High-Speed Compression: 12-clicks
- Height Adjustment: Independent of spring preload
- Springs: Swift Springs included
- Default Spring Rates: Front 7kg/mm | Rear 6kg/mm
- Camber Plates: Front & rear included where applicable
- Mount Type: Pillowball mounts when camber plates are not applicable
- Warranty: 2 Years (Manufacturer Defect)
- Rebuildable: Yes
Why Choose BC Racing ZR Series Coilovers?
The ZR Series is engineered for WRX/STI drivers who need full control over how their VAB/VAF/VAG chassis behaves on the street or at the track. With its three-way adjustable damping, inverted damper construction, Swift Springs, and remote reservoirs, this system offers the highest level of precision, thermal stability, and chassis tuning BC Racing provides. From time-attack to autocross to aggressive back-road driving, the ZR Series delivers pro-grade suspension capability.
FAQs
How does the ZR Series differ from the ER or HM Series?
The ZR Series adds independent high-speed compression, low-speed compression, and rebound tuning, offering significantly more adjustability than the ER or HM Series.
Do VAB/VAF/VAG WRX/STI models receive inverted dampers?
Yes. McPherson-strut models like these receive inverted mono-tube dampers paired with remote reservoirs.
Are Swift Springs included?
Yes. Swift Springs come standard on every ZR Series system.
Can I request custom spring rates or valving?
Absolutely. BC Racing supports custom valving and custom spring rates for motorsport or advanced street builds.
Fitment
- 2015 Subaru WRX / STI (VAB / VAF / VAG)
- 2016 Subaru WRX / STI (VAB / VAF / VAG)
- 2017 Subaru WRX / STI (VAB / VAF / VAG)
- 2018 Subaru WRX / STI (VAB / VAF / VAG)
- 2019 Subaru WRX / STI (VAB / VAF / VAG)
- 2020 Subaru WRX / STI (VAB / VAF / VAG)
- 2021 Subaru WRX / STI (VAB / VAF / VAG)
Why Buy from Beefcake Racing?
Beefcake Racing is a leading authorized BC Racing dealer offering expert technical support, fast shipping, and aggressive pricing. Whether you're building a track WRX, a street/track STI hybrid, or simply want superior control on the VAB/VAF/VAG platform, our team ensures your ZR Series setup is dialed in right. Contact us at sales@beefcakeracing.com or call 1-855-827-7223. Beefcake Racing - Performance Starts Here.
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