Description
The Dežru Spec-RS Coilover System for the Porsche 911 (996) Carrera 4 (C4) is engineered for performance-focused drivers seeking improved chassis control, steering precision, and stability under demanding driving conditions. Designed around the 996 platform’s rear-engine layout and all-wheel-drive configuration, the Spec-RS aims to deliver consistent handling, improved weight-transfer control, and greater driver confidence during spirited road driving and track use.
Featuring motorsport-focused digressive monotube dampers, the Spec-RS is designed to provide strong low-speed damping support during braking, corner entry, and rapid transitions while maintaining controlled compliance over uneven surfaces. Compared with more street-oriented suspension setups, its performance-focused damping characteristics prioritize chassis composure, responsive handling, and predictable behavior under higher lateral loads.
The system uses 250 lb/in front and 450 lb/in rear linear HyperCoil springs, providing a performance-oriented spring combination intended to balance front-end grip with rear suspension support. When matched with appropriately tuned dampers, these spring rates aim to reduce excessive body movement and improve stability during braking, cornering, and acceleration.
Fixed-length damper bodies and adjustable ride height allow the vehicle to be lowered for a more performance-focused stance while helping preserve usable suspension travel. Performance-oriented upper mounts are designed to support alignment precision and consistent suspension response under demanding conditions.
Each system features hand-built, dyno-matched dampers to promote consistent left-to-right damping performance. With adjustable damping, the Spec-RS allows drivers to fine-tune suspension behavior for their driving style, tire setup, and intended road or track use.
Key Features
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Vehicle-specific application: Intended for the Porsche 911 (996) Carrera 4 (C4); confirm exact fitment before ordering.
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Motorsport-focused digressive monotube dampers: Designed for responsive chassis support and controlled damping under demanding conditions.
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Adjustable damping: Allows suspension response to be tuned for spirited driving and track applications.
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Linear HyperCoil springs: 250 lb/in front and 450 lb/in rear spring rates.
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Adjustable ride height: Supports a lowered, performance-oriented stance.
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Fixed-length damper bodies: Designed to help preserve usable suspension travel throughout the adjustment range.
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Performance upper mounts: Intended to support alignment precision and consistent handling.
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Hand-built, dyno-matched dampers: Promote consistent damping characteristics from side to side.
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Performance-focused design: Suitable for spirited road driving, time attack, and HPDE events when appropriately configured.
Performance Benefits
The Dežru Spec-RS Coilovers are designed to help the Porsche 996 Carrera 4 maintain a composed and predictable chassis during braking, cornering, and rapid direction changes. The digressive damping profile aims to provide strong support during initial steering inputs and weight transfers while allowing controlled suspension movement over changing road and track surfaces.
The 250 lb/in front and 450 lb/in rear spring combination is intended to balance front-end response with rear suspension control. Combined with appropriate damper tuning and alignment, this setup aims to reduce excessive body roll, improve cornering consistency, and provide more controlled handling during aggressive driving.
Adjustable damping and ride height allow drivers to tailor the suspension to their preferences and intended use. For track applications, the final setup should be matched to tire characteristics, alignment settings, vehicle modifications, and actual suspension travel.
Vehicle Fitment
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Make: Porsche
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Model: 911 Carrera 4 (C4)
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Generation: 996
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General model-year range: 1999–2004
Confirm exact compatibility with Dežru for the vehicle’s model year, trim, and suspension configuration before listing or ordering.
Disclaimer: This product is built to order. Please allow approximately 3–4 weeks for production before shipment.
