Dežru Spec-R

Dežru Spec-R Coilover – 3-Way Adjustable Track Suspension System

The Dežru Spec-R coilover is built for serious track enthusiasts who demand complete control. Featuring inverted dampers, external reservoirs, and 3-way adjustability (low-speed compression, high-speed compression, and rebound), the Spec-R gives drivers race-proven tuning capability. At its core, the Bilstein COB digressive piston ensures immediate chassis control while maintaining compliance over track imperfections. Paired with HyperCoils racing springs, the Spec-R is the definitive track coilover suspension system for those who refuse compromise.

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Key Features:

Inverted Dampers with External Reservoirs & 3-Way Control
The Spec-R uses an inverted monotube design paired with external reservoirs, ensuring maximum rigidity, heat dissipation, and fluid capacity. The reservoir allows extended damper stroke, reduced cavitation, and longer fade-free sessions.

• Low-Speed Compression Control: Dial in chassis balance—perfect for fine-tuning pitch and roll in high-speed corners.

• High-Speed Compression Control: Absorb curbing, bumps, and track irregularities without upsetting vehicle balance.

• Rebound Control: Manage weight transfer and corner exit grip with surgical precision.
  Together, this 3-way adjustability allows track enthusiasts to tune their suspension for different circuits, surfaces, and driving styles with race-grade accuracy.

Bilstein COB Digressive Piston
At the heart of the Spec-R lies a Bilstein COB digressive piston. Digressive valving ensures:

• Supple compliance over minor surface imperfections, maintaining traction.

• Rapid damping force ramp-up at higher shaft speeds, controlling body movement during aggressive transitions, braking zones, and corner entry.
  This balance gives drivers the confidence to brake later, corner harder, and accelerate earlier.

HyperCoils Springs—Your Choice or Ours
The Spec-R ships with HyperCoils springs, chosen for their unmatched linearity, fatigue resistance, and consistency. Customers may select spring rates to suit their build and track goals, or rely on Dežru’s data-driven recommendations, ensuring an ideal balance of grip, precision, and compliance.

Optimized Lengths & Rates
Spring lengths and rates are carefully calibrated to achieve maximum performance without unnecessary harshness. This keeps the car controlled under load yet predictable and confidence-inspiring lap after lap.

Track-Focused Engineering
The Spec-R is designed with one purpose: dominate on track. Every component was developed for drivers who understand that adjustability, precision, and control are not luxuries—they are requirements.

Global Sourcing, U.S. Assembly

• Engineered to European quality standards

• Assembled in the United States

• Featuring shock components from Denmark, Japan, England, and the U.S.

This international collaboration ensures uncompromising quality, while final U.S. assembly guarantees tight tolerances and application-specific fitment.

FAQ: Spec-R Track Coilover

Q: What does 3-way adjustable suspension mean?
A: 3-way coilovers let you independently adjust rebound, low-speed compression, and high-speed compression. This level of control allows drivers to fine-tune chassis behavior for different tracks, surfaces, and driving styles.

Q: Why is digressive valving ideal for track coilovers?
A: Digressive pistons provide strong low-speed damping to keep the chassis flat under braking and cornering, while preventing harshness over curbs and imperfections. This balance gives drivers confidence at the limit.

Q: Who should buy the Spec-R coilover?
A: The Spec-R is for dedicated track enthusiasts who want maximum tuning capability. It’s not about comfort—it’s about extracting every tenth on track with professional-grade adjustability.