Dežru Spec-S • Street & Touring 89-95 Ferrari 348 Coilover System

Balanced daily comfort with real back-road capability.

Designed to lower your 348 by approximately 25–30 mm while maintaining composure over real-world roads, the Spec-S sharpens turn-in and body control without beating you up on the commute.

Upright monotube shocks Nickel-plated shock bodies Vehicle Specific Spring Rates

Dežru Spec-S Coilovers – Ferrari 348

The Dežru Spec-S coilover system is engineered specifically for the Ferrari 348, a classic mid-engine platform that rewards precision, balance, and clean chassis control. Designed around the 348’s suspension geometry and weight distribution, the Spec-S brings modern damping behavior and confidence to a car that benefits greatly from improved body control and consistency.

Developed for owners who drive their 348 on real roads but still enjoy spirited driving and occasional track days, the Spec-S features digressive piston valving that provides strong low-speed chassis support during braking, turn-in, and transitions, while remaining composed over uneven pavement. Rather than chasing excessive race stiffness, this tuning philosophy targets a balanced ride frequency in the ~2.0–2.2 Hz range, delivering a connected feel without harshness.

Fixed-length damper bodies paired with a 30–45 mm adjustable lowered ride height ensure proper suspension stroke and geometry are preserved. This approach maintains usable bump travel and consistent roll behavior, allowing the 348 to feel predictable and confidence-inspiring when driven aggressively.

Key Features

Digressive monotube dampers for precise chassis control, consistent damping performance, and clear driver feedback.
Fixed-length damper bodies with 30–45 mm adjustable lowered ride height to preserve geometry and usable suspension travel.
Adjustable damping to fine-tune rebound for street driving, back roads, or track use.
600 lb/in front and 800 lb/in rear spring rates, selected to balance front-end response with rear stability and traction on the 348 platform.
Linear HyperCoil springs for predictable load transfer and smooth, consistent response throughout suspension travel.
OEM-style upper mounts to minimize NVH while maintaining proper fitment and alignment stability.
Hand-built, dyno-matched pairs to ensure precise left-to-right damping consistency.

Performance Character

The Spec-S refines the Ferrari 348’s balance by reducing excessive body motion while preserving compliance and traction. The digressive damping profile provides firm, supportive control during initial inputs and transitions, paired with controlled compliance that keeps the tires planted as cornering and braking loads increase.

The result is a stable, predictable, and confidence-inspiring driving experience that remains enjoyable on the street while delivering composed behavior when pushed hard.

Dežru Performance Suspension warrants to the original purchaser that these parts manufactured and/or sold by Dežru Performance Suspension (the product) is free from defects in material and workmanship under normal use. Dežru Performance Suspension warrants that the product will perform substantially in accordance with the specifications set forth in the documentation provided with it. The above express warranties are made for a period of the lesser of 12,000 miles or 36 months from the date the product is installed in your vehicle. Any improper use, operation beyond capacity, substitution or addition of parts not approved by Dežru Suspension in writing, any alteration or repair by others, or any removal, defacing or altering of the identification shall void this warranty. There is no warranty on high-performance or race related parts due to the nature of usage.