H&R 29591-3 Street Performance Coilover Kit

The H&R 29591-3 Street Performance Coilover Kit is a complete, vehicle-specific suspension system engineered to deliver an exceptional balance of ride comfort and performance. Built around a mono-tube gas shock design, these coilovers provide more precise damping control and stable performance characteristics compared to conventional twin-tube designs—all while reducing unsprung weight for sharper handling response.

At the heart of the system is H&R's exclusive dynamic damper technology, pairing specially valved shocks with progressive-rate springs engineered to work in harmony. The progressive spring rate starts compliant over everyday road imperfections and firms up progressively under harder cornering or braking loads, making this kit equally at home on a daily commute or a spirited back-road drive.

The fully threaded shock body (not a sleeve-over imitation) allows virtually infinite ride height adjustment via easy-to-use spring seat collars, giving you the flexibility to dial in your preferred stance and lowering level. H&R's true threaded body also provides superior heat dissipation compared to systems that use a threaded housing over a standard damper insert.

Key Features:

• Mono-tube gas shock construction for precise, consistent damping response
• Progressive-rate springs matched to shock valving for a finely tuned suspension system
• Fully threaded shock body for adjustable vehicle lowering (approximately 1.0" to 2.5" range, varies by application)
• Lighter than twin-tube shocks to minimize unsprung weight
• True threaded shock body for improved heat dissipation
• Zinc-phosphate coated shock tubes for corrosion resistance
• Adjustment wrenches included
• Covered by H&R's 2-year warranty to the original purchaser

Professional installation is recommended, and a wheel alignment is required after fitting. Note that lowering height may vary on vehicles equipped with factory sport suspensions. Always install within H&R's specified adjustment range to maintain warranty coverage.