H&R Street Performance Coilover System - F33/36 428ix 430ix 435ix 440ix

OVERVIEW

The H&R Street Performance Coilover System takes the traditional shock and spring package a step further. H&R pairs its progressive-rate springs with dampers valved specifically for those spring rates, then adds threaded height adjusters so you can set ride height to your own taste rather than living with a fixed drop.

These coilovers are built for street use. The progressive springs start out soft and stiffen as they compress, which keeps the ride compliant while still improving handling and body control. H&R engineers each kit as a complete coilover, so the correct amount of travel is designed into every damper and the result is a tight, controlled ride rather than a harsh or ultra-stiff one. Each H&R coilover is TUV tested and approved and is built to ISO quality standards.

SPECS

• Threaded height-adjustable coilover system, front and rear
• Front height adjustment range: -0.6" to 1.6"
• Rear height adjustment range: -0.1" to 2.2"
• Progressive-rate springs — soft initial rate that stiffens under compression
• Dampers valved specifically to match the supplied spring rates
• Correct damper travel engineered into each unit for coilover use
• TUV tested and approved
• Built to ISO quality standards

PARTS INCLUDED

• Complete coilover system as supplied by H&R Springs; see the installation instructions for the full bill of materials.

TECH RESOURCES

Required Extras

• None. H&R specifies no additional hardware for this coilover system.
• Four-wheel alignment after installation and after any ride-height change — required by H&R.
• Professional installation. H&R specifies that its suspensions be installed by a professional suspension mechanic.
• Confirm your car is not equipped with EDC / adaptive dampers. This system replaces the factory dampers and is only for cars H&R lists for this application.
• Anti-seize or protective lubricant on the adjuster threads before adjusting ride height.

Installation

• H&R Springs Technical & Installation Information (PDF) — H&R pre- and post-installation guidance, spring identification, ride-height measurement, adjuster handling, bumpstop trimming and alignment requirements.
• Vehicle-specific instructions are supplied in the kit.

VEHICLE APPLICATIONS

H&R publishes separate Street Performance Coilover part numbers for each of these body styles, so no single official part number covers this listing. Model years shown are the US-market production ranges for these chassis and engines. Confirm the exact part number and fitment for your car with Speed Logic before ordering.