BC Racing ZR Series Coilover System (2005 - 2007 Subaru Impreza STI - GDE / GDF) - F-03-ZR
Maximum Adjustability for the 2005 - 2007 STI (GDE/GDF)
Push your 2005 - 2007 Subaru Impreza STI to the limit with the BC Racing ZR Series Coilover System - the most adjustable suspension BC Racing has ever engineered. Developed specifically for competitive drivers who demand deeper control than the ER or HM Series can offer, the ZR Series provides 15-click low-speed compression adjustment, 12-click high-speed compression control, and 30-click rebound tuning. McPherson-strut vehicles like the GDE/GDF STI benefit from inverted mono-tube dampers paired with remote external reservoirs, keeping heat down and performance consistent during aggressive track sessions. With Swift Springs included standard and full height adjustability independent of spring preload, the ZR Series is a true motorsport-level suspension system designed for serious STI enthusiasts.
Performance Highlights
- Inverted mono-tube damper construction improves rigidity and reduces unsprung weight for sharper response.
- 15-click low-speed compression adjustment manages body roll, pitch, and weight transfer.
- 12-click high-speed compression adjustment fine-tunes impact absorption over curbs and bumps.
- 30-click rebound control regulates damper recovery and chassis stability.
- External reservoirs increase oil capacity and enhance heat dissipation under extended track use.
- Steel-braided reservoir lines or hard stems depending on damper orientation.
- Swift Springs included standard for improved spring consistency and response.
- Independent ride height adjustment retains full damper stroke at any stance.
- Front and rear camber plates included where applicable for precise alignment tuning.
- Pillowball mounts supplied where camber plates do not apply.
- Custom spring rates and custom valving available for track-specific builds.
- Fully rebuildable with a 2-year manufacturer defect warranty.
Quick Specs
- Brand: BC Racing
- Series: ZR Series
- Part Number: F-03-ZR
- Vehicle Fitment: 2005 - 2007 Subaru Impreza STI (GDE / GDF)
- 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 6kg/mm | Rear 4kg/mm
- Camber Plates: Front & rear included where applicable
- Mount Type: Pillowball mounts where camber plates do not apply
- Warranty: 2 Years (Manufacturer Defect)
- Rebuildable: Yes
Why Choose BC Racing ZR Series Coilovers?
The ZR Series is BC Racing's top-tier coilover, offering the greatest level of damping adjustability for drivers who treat their 2005 - 2007 STI like a competition machine. With separate high- and low-speed compression circuits, generous rebound control, and Swift Springs as standard equipment, the ZR Series delivers elite handling precision on any track surface. If you're chasing lap times or building a fully track-prepped GDE/GDF STI, this is the suspension package that gives you complete authority over your setup.
FAQs
How does the ZR Series differ from the ER or HM Series?
The ZR Series offers high- and low-speed compression adjustment in addition to 30-way rebound control, providing far more tuning than the ER or HM Series.
Do these coilovers use inverted dampers on the STI?
Yes. McPherson-strut vehicles like the GDE/GDF STI receive inverted mono-tube dampers with remote external reservoirs.
Are Swift Springs included?
Yes. Swift Springs are standard on all ZR Series kits.
Can I order custom valving or spring rates?
Absolutely. BC Racing can custom valve the system to your preferred spring rates and driving style.
Fitment
- 2005 Subaru Impreza STI (GDE / GDF)
- 2006 Subaru Impreza STI (GDE / GDF)
- 2007 Subaru Impreza STI (GDE / GDF)
Why Buy from Beefcake Racing?
Beefcake Racing is a trusted authorized BC Racing dealer, offering expert tech support, fast order processing, and competitive pricing. Whether you're building a canyon carver or a full-time track STI, our team ensures you choose the right ZR Series configuration. Contact us at sales@beefcakeracing.com or call 1-855-827-7223. Beefcake Racing - Performance Starts Here.
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