H&R 54755-2 Street Performance Coilover Kit - Fixed Dampening

The H&R 54755-2 Street Performance Coilover Kit is a complete, matched suspension system engineered to deliver the ideal balance of aggressive lowering and everyday drivability. Built around a mono-tube gas shock construction, these coilovers provide superior damping control and more stable performance characteristics compared to traditional twin-tube shock absorbers — without the trade-off of a harsh ride.

At the heart of the system is H&R's exclusive dynamic damper technology: each shock is custom-valved to work in precise harmony with a precision-engineered progressive-rate spring. The progressive spring rate provides compliance over rough pavement at normal speeds, then firms up progressively under hard cornering and braking, creating a finely tuned, cohesive suspension system rather than a collection of mismatched parts.

Key Features:

• Mono-tube gas shock construction — lighter than twin-tube designs to reduce unsprung weight and improve response
• True threaded shock body — not a damper insert in a threaded housing; provides better heat dissipation and more precise height adjustment
• Fully threaded shock body for wide-range, adjustable ride height lowering
• Front lowering range: 1.2" – 2.5" | Rear lowering range: 1.3" – 2.4" (varies by application)
• Progressive-rate springs custom-matched to shock valving for balanced handling and comfort
• Fixed dampening — factory-optimized damper settings tuned specifically for street use
• Lower center of gravity for improved cornering stability and performance
• TÜV tested and manufactured to ISO 9001 quality standards
• 2-year warranty to the original purchaser

H&R Street Performance Coilovers are hand-assembled in Germany by H&R Spezialfedern and are designed as a true coilover system from the ground up — not a modified OEM shock body. Professional installation and a full wheel alignment are recommended after fitment.