H&R OE Sport Springs – BMW 128i / 135i (E82)

OVERVIEW

H&R OE Sport Springs are the mildest step in the H&R lowering range for the E82 1 Series. They drop the car roughly one inch at the front and three-quarters of an inch at the rear — enough to close the fender gap and lower the center of gravity without giving up the compliance of a daily driver.

The progressive rate is about 10–20% firmer than stock, so the spring stays comfortable in normal driving and stiffens as it compresses to keep the chassis composed when the road turns. Body roll drops, turn-in sharpens and the car sits with a factory-plus stance that still clears a steep driveway. The springs work with healthy factory dampers; pairing them with a sport-valved damper is the usual choice for a hard-driven street car.

H&R builds every spring in-house in Germany. The wire is a special 54SiCr6 spring steel, cold-wound and then shot-peened to increase service life by more than 200%, so the spring resists settling and sagging over time. Each spring is 100% tested before it leaves H&R's ISO 9001-certified plant, and the range carries TÜV approval.

SPECS

• Approx. front lowering: 1.0"
• Approx. rear lowering: 0.75"
• Progressive spring rates, increased approximately 10–20% over stock
• Cold-wound from 54SiCr6 spring steel
• Shot-peened to increase service life by more than 200%
• Will not settle or sag
• Every spring 100% tested before leaving H&R's ISO 9001-certified production facility in Germany
• TÜV and ISO 9001 quality assurance certification

PARTS INCLUDED

• Complete kit as supplied by H&R Springs; see the installation instructions for the full bill of materials.
• Front and rear spring set (4 springs).

TECH RESOURCES

Additional Parts Required

• Four-wheel alignment. H&R requires the alignment to be checked and reset after installation. Budget for this before ordering.
• Professional installation. H&R states its springs and suspensions should be installed by professional suspension mechanics only.
• Spring compressor. A spring-only kit requires the struts to be disassembled, which needs a proper coil-spring compressor. Installer-supplied.
• Bump-stop trimming. Check the trim chart in the H&R Technical Information Sheet linked below for this kit number before assembly.
• Confirm your car is not fitted with EDC / adaptive dampers. H&R does not list this kit for EDC-equipped cars.
• Optional: matched sport-valved dampers. The springs work with healthy factory dampers, but a lowered car holds up better on a damper valved for the shorter spring.
• Optional: replace worn strut mounts, bump stops and dust boots while the struts are apart.

Installation

• H&R Technical Information Sheet (PDF) — ride-height measurement procedure, spring orientation and markings, bump-stop trim chart by kit number, and post-installation alignment requirements.
• H&R technical FAQ and installation guidance (hrsprings.com) — manufacturer installation questions and answers.
• H&R does not publish a vehicle-specific printed installation manual for this kit; installation follows the factory BMW suspension service procedure. Contact Speed Logic if you need help sourcing the procedure.

Notes

• Lowering figures are H&R approximations and vary with the car's options, wheel and tire package and starting ride height. Fitment for a specific coupe (E82) or convertible (E88) build should be confirmed with Speed Logic before ordering.

PART NUMBER

• 50402-55 — H&R OE Sport Spring set, BMW 1 Series E82/E88

VEHICLE APPLICATIONS