Dežru Spec-RS

Dežru Spec-RS Coilover – 1-Way Adjustable Street & Track Coilover Suspension

The Dežru Spec-RS coilover is engineered for enthusiasts who demand versatility. Featuring inverted dampers, optional external reservoirs, and 1-way rebound adjustability, the Spec-RS allows drivers to fine-tune ride quality and handling balance. With HyperCoils performance springs chosen by you—or recommended by us—the Spec-RS delivers comfort for the weekday commute and precision for the weekend track day. This is the ultimate dual-purpose coilover suspension system.

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Key Features:

Inverted Dampers with External Reservoirs & 1-Way Rebound Control
The Spec-RS uses inverted dampers to increase rigidity, improve steering response, and resist side-load deflection—delivering stability in both spirited driving and track environments. Select models also feature external reservoirs:

• On some applications, reservoirs are available at all four corners.

• On others, only the rear dampers can be fitted due to design limitations in the front strut tower opening.

The reservoir expands oil capacity, reduces heat buildup, and prevents cavitation, ensuring consistent performance over long sessions.

With 1-way rebound adjustment, drivers can fine-tune how quickly the suspension extends after compression. The result is a suspension that can be dialed in for sharper handling and reduced body movement on track, or softened for improved ride quality on the street—striking an ideal balance for a dual-purpose setup.

Bilstein COB Digressive Piston
At the heart of the Spec-RS is the Bilstein COB digressive piston, offering the best of both worlds:

• On the street, digressive valving smooths out smaller bumps and road imperfections for comfort.

• On track, it delivers immediate damping force at higher shaft speeds, controlling dive, squat, and roll during aggressive braking and cornering.
  This dual character makes it perfectly suited for a suspension that lives both on the road and at the circuit.

HyperCoils Springs—Your Choice or Ours
The Spec-RS is paired with HyperCoils springs, renowned for precision and durability. Consumers may select their preferred rates, or trust Dežru’s recommendations, based on vehicle platform and driving style.

Optimized Lengths & Rates
Spring lengths and rates are tailored to maximize performance without compromising comfort, ensuring predictable handling, stability at the limit, and compliant ride quality on daily drives.

Street & Track Dual Purpose
The Spec-RS is designed for the weekend track enthusiast who demands a suspension that can transition seamlessly between weekday commuting and competitive lapping sessions.

Global Sourcing, U.S. Assembly

• Engineered to European quality standards

• Assembled in the United States

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

This international collaboration ensures the highest levels of performance and consistency, while final U.S. assembly guarantees precision fitment and uncompromising quality control.

FAQ: Spec-RS Street & Track Coilover

Q: What’s the difference between 1-way and 3-way adjustable coilovers?
A: 1-way coilovers adjust rebound only, letting you control how quickly the suspension extends after compression. 3-way adds low-speed and high-speed compression, but is more complex. The Spec-RS offers simple, effective 1-way tuning—ideal for drivers who want adjustability without overcomplication.

Q: Do all Spec-RS coilovers have external reservoirs?
A: Some applications allow reservoirs at all four corners, while others are limited to the rears due to strut tower design. Either way, reservoirs expand fluid capacity, reduce heat, and ensure consistent damping.

Q: Are Spec-RS coilovers good for both street and track?
A: Yes. The Spec-RS was designed for the weekend track enthusiast. Soft enough for commuting, firm enough for track precision, and customizable with HyperCoils spring rates.