BC Racing HM Series Coilover System (2011 - 2014 Subaru Impreza STI Sedan - GVB / GVF) - F-17-HM
Inverted, Track-Focused Performance for the GVB/GVF STI
Unlock exceptional suspension control for your 2011 - 2014 Subaru Impreza STI Sedan (GVB / GVF) with the BC Racing HM Series Coilover System. Built by blending the strongest features of both the RM and ER Series, the HM Series utilizes fully inverted mono-tube dampers for superior rigidity and reduced unsprung weight, combined with independent compression and rebound adjustment for next-level tuning flexibility. Designed for McPherson-strut Subarus that see heavy track time or aggressive canyon driving, the HM Series features external reservoirs, steel-braided reservoir lines, and Swift Springs standard - making it one of the most capable and durable suspension systems for the GVB/GVF chassis.
Performance Highlights
- Fully inverted mono-tube damper design for improved rigidity and reduced strut flex.
- 30-way independent compression and rebound adjustment enables precise tuning for street or track.
- External reservoirs increase oil capacity and provide superior thermal dissipation.
- Steel-braided reservoir lines offer enhanced durability and consistent fluid delivery.
- Swift Springs included for increased response, stability, and spring longevity.
- Independent ride height adjustment ensures proper damper stroke regardless of vehicle drop.
- Front and rear camber plates included on all applicable kits for precise alignment control.
- Pillowball mounts used when camber plates do not apply for sharper steering feel.
- Custom valving available to pair perfectly with your preferred spring rates.
- Fully rebuildable and backed by a 2-year manufacturer warranty.
Quick Specs
- Brand: BC Racing
- Series: HM Series
- Part Number: F-17-HM
- Vehicle Fitment: 2011 - 2014 Subaru Impreza STI Sedan (GVB / GVF)
- Damper Design: Inverted mono-tube with external reservoirs
- Compression Adjustment: 30-way via external reservoir
- Rebound Adjustment: 30-way via bottom of damper
- Height Adjustment: Independent of spring preload
- Default Spring Rates: Front 7kg/mm | Rear 6kg/mm
- Springs Included: Swift Springs (standard)
- Camber Plates: Front and rear included where applicable
- Mount Type: Pillowball mounts when camber plates do not apply
- Warranty: 2 Years (Manufacturer Defect)
- Rebuildable: Yes
Why Choose BC Racing HM Series Coilovers?
The HM Series is built for drivers who demand superior heat management, rigidity, and precise adjustability - qualities that pair perfectly with the performance potential of the GVB/GVF STI. With inverted dampers, Swift Springs, and a tuning range designed for both track and spirited street driving, the HM Series delivers elite consistency, sharper chassis response, and exceptional durability.
FAQs
How does the HM Series compare to the ER Series?
The HM Series uses an inverted mono-tube design for increased rigidity and reduced unsprung weight, while also offering the same independent compression and rebound tuning found in the ER Series.
Do HM Series coilovers include Swift Springs?
Yes. Swift Springs come standard on all HM Series kits, providing improved linearity and longer-lasting performance.
Is the HM Series daily-driver friendly?
Yes. Although optimized for track duty, the wide adjustment range allows for a comfortable setup suitable for everyday driving.
Can I order custom valving?
Absolutely. BC Racing offers custom valving to match your requested spring rates or driving preferences.
Fitment
- 2011 Subaru Impreza STI Sedan (GVB / GVF)
- 2012 Subaru Impreza STI Sedan (GVB / GVF)
- 2013 Subaru Impreza STI Sedan (GVB / GVF)
- 2014 Subaru Impreza STI Sedan (GVB / GVF)
Why Buy from Beefcake Racing?
Beefcake Racing is your trusted authorized BC Racing dealer, offering expert suspension advice, fast shipping, and competitive pricing. Whether your STI build is aimed at track domination or refined street handling, we'll help you choose the best HM configuration for your goals. Contact us anytime at sales@beefcakeracing.com or call 1-855-827-7223. Beefcake Racing - Performance Starts Here.
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