H&R Sport Spring Kit – BMW M3 Cabrio (E93)

OVERVIEW

H&R Sport Springs are the best-selling performance street spring for BMW, and replacing the factory springs is one of the first steps in suspension tuning. Lowering the center of gravity reduces body roll and improves handling and chassis balance, while giving the E93 M3 Cabrio an aggressive but driveway-friendly stance.

The progressive spring rates are increased 10–20% over stock, so the car stays comfortable during normal driving yet stiffens up for proper chassis composure when the road gets twisty. This convertible-specific kit drops the front approximately 1" and the rear approximately 0.6".

H&R springs are made from a special 54SiCr6 spring steel and shot-peened to increase service life by more than 200%, so they are more durable than ordinary coil springs and will not settle or sag. All production is completed in-house, and every spring is 100% tested before it leaves the ISO9001-certified facility in Germany.

SPECS

• Approximate front lowering: 1"
• Approximate rear lowering: 0.6"
• Progressive spring rate design
• Spring rates increased 10–20% over stock
• Convertible-specific spring set
• Material: 54SiCr6 spring steel
• Shot-peened to increase service life by more than 200%
• Will not settle or sag
• 100% tested before leaving the production facility
• TÜV and ISO9001 certified quality assurance
• Manufactured in-house by H&R in Germany

PARTS INCLUDED

• H&R Sport Spring set — front and rear springs
• Complete kit as supplied by H&R Springs; see the installation instructions for the full bill of materials.

TECH RESOURCES

Additional Parts Required

• None. H&R Springs specifies no additional hardware for this spring kit.
• Four-wheel alignment after installation (installer-supplied service) — required any time ride height is changed.
• Professional installation — H&R specifies that its springs be installed by professional suspension mechanics only.
• Spring compressor (installer-supplied tool) — required to disassemble the factory struts on a spring-only kit.

Installation

• H&R Springs Technical & Installation Information (PDF) — installation requirements, ride-height measurement procedure, bumpstop trimming table and alignment notes.

Notes

• Part 29053-2 is the convertible-specific spring set. E90 M3 Sedan and E92 M3 Coupe use a different H&R part number — contact Speed Logic for the correct kit.

PART NUMBER

• 29053-2

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