H&R 29835-1 Street Performance Coilover Kit

The H&R 29835-1 Street Performance Coilover Kit is a complete, vehicle-specific coilover suspension system engineered to deliver an ideal balance of daily-driver comfort and genuine performance handling. Featuring innovative mono-tube gas shock construction, these coilovers outperform traditional twin-tube designs with more precise damping control, improved heat dissipation, and reduced unsprung weight.

Unlike entry-level coilover kits that rely on damper inserts in a threaded housing, H&R uses a true threaded shock body — meaning the outer shock tube itself is threaded for superior rigidity, better thermal management, and virtually infinite ride height adjustability. The threaded spring perch can be raised or lowered with the included spanner wrenches, allowing you to fine-tune your stance without compromising suspension geometry.

Each shock is specifically valved to work in harmony with H&R's progressive-rate coil springs, which are precision-wound from shot-peened 54SiCr6 spring steel. This pairing creates a finely tuned system that stays compliant over rough roads at everyday speeds while firming up progressively under hard cornering and braking. Every kit is hand-assembled in Germany under rigid ISO 9001 and German TÜV standards.

Key Features:

• Mono-tube gas shock construction for precise, stable damping in all conditions
• True threaded shock body for superior heat dissipation and ride height adjustment
• Front and rear lowering range of 1.0" – 1.7" (25.4–43.1 mm)
• Progressive-rate coil springs precision-wound from 54SiCr6 spring steel
• Vehicle-specific shock valving tuned to match spring rates
• Spanner wrenches included for easy ride height adjustment
• Hand-assembled in Germany to ISO 9001 and TÜV standards
• 2-year warranty to the original purchaser

Professional installation is recommended. A full suspension alignment is required after installation. Note: Lowering height may vary on vehicles equipped with factory sport suspensions or different engine configurations. Using the kit outside the allowable adjustment range specified in the included H&R tech sheet will void the warranty.