Description
The Dežru Spec-S Coilover System for the Porsche 911 (997) Turbo is designed to enhance handling precision, chassis stability, and driving confidence while preserving the performance and refinement expected from Porsche’s rear-engine sports car. Developed around the 997 platform’s suspension geometry and rear-biased weight distribution, the Spec-S aims to deliver improved body control and a more composed driving experience for daily use, spirited street driving, mountain roads, and occasional High-Performance Driver Education (HPDE) track events.
Featuring digressive monotube dampers, the Spec-S provides responsive low-speed damping support during braking, cornering, steering inputs, and rapid transitions. This helps control body movement and maintain predictable handling while allowing the suspension to respond to uneven pavement. The damping characteristics are designed to balance chassis support with road compliance rather than relying solely on increased spring stiffness.
The system features 300 lb/in front and 500 lb/in rear linear HyperCoil springs, providing a performance-oriented spring combination intended to support the 997 Turbo’s rear-engine layout. The front springs help maintain steering response and braking stability, while the higher rear spring rate is designed to provide additional support during acceleration, cornering, and changes in load.
The Spec-S incorporates fixed-length damper bodies with an adjustable lowered ride height of approximately 25–30 mm, allowing a sportier stance while aiming to preserve usable suspension travel and predictable handling characteristics. OEM-style upper mounts help retain everyday drivability and reduce noise, vibration, and harshness (NVH).
Each system features hand-built, dyno-matched damper pairs to promote consistent left-to-right damping performance. The adjustable damping system allows drivers to fine-tune suspension response for their preferred balance of comfort, control, and performance.
Key Features
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Vehicle-specific application: Intended for the Porsche 911 (997) Turbo; confirm exact Turbo fitment before ordering.
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Digressive monotube dampers: Designed to provide responsive chassis support and controlled body movement.
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Adjustable damping: Allows suspension response to be fine-tuned for road driving and occasional track use.
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Linear HyperCoil springs: 300 lb/in front and 500 lb/in rear spring rates for performance-oriented chassis control.
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Adjustable ride height: Approximately 25–30 mm of lowering for a sportier stance.
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Fixed-length damper bodies: Designed to help maintain usable suspension travel throughout the adjustment range.
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OEM-style upper mounts: Help preserve road manners and reduce unwanted NVH.
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Hand-built, dyno-matched dampers: Promote consistent damping characteristics from side to side.
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Street and occasional track use: Intended for spirited driving, mountain roads, and occasional HPDE events.
Performance Benefits
The Dežru Spec-S Coilovers are designed to help the Porsche 911 (997) Turbo feel more planted and composed by reducing excessive body movement during braking, acceleration, and cornering. The digressive damping profile aims to provide responsive support during initial steering inputs and weight transfers while maintaining compliance over imperfect road surfaces.
The 300 lb/in front and 500 lb/in rear spring combination is intended to balance front-end response with rear suspension support. The front springs help maintain steering precision, while the rear springs provide additional support for managing the vehicle’s rear-engine weight distribution under acceleration and cornering.
Combined with adjustable damping and ride height, the Spec-S offers a more controlled driving experience for enthusiasts seeking sharper handling without giving up everyday usability.
Vehicle Fitment
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Make: Porsche
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Model: 911 Turbo
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Generation: 997
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Model years: Generally 2007–2009 for the 997.1 Turbo and 2010–2012 for the 997.2 Turbo
Important: The supplied product text and image filenames reference 997 Carrera (C2) components, not specifically Turbo components. Confirm that this exact coilover kit and its spring rates are approved for the 997 Turbo before publishing the fitment or product specifications.
Disclaimer: This product is built to order. Please allow approximately 3–4 weeks for production before shipment.
