H&R Sport Cup Kit – 2008–2013 BMW 128i / 135i Coupe (E82) | N52 / N54 / N55 | 31054-6

The H&R Sport Cup Kit pairs H&R’s progressive-rate sport springs with upgraded OEM-style sport dampers — delivering approximately 2.0 inches of lowering and a significant improvement in handling response, cornering flatness, and steering feel over the factory E82 suspension. Engineered specifically for the 2008–2013 BMW 128i and 135i Coupe (E82) — covering both the N52 naturally aspirated and N54/N55 turbocharged inline-six variants. A complete spring and damper package for the E82’s already-capable rear-wheel-drive coupe platform — sharpening the handling response and lowering the centre of gravity without sacrificing the street usability that makes the E82 such a rewarding driver’s car.

Sport Cup Kit vs. Coilover — What You’re Getting

The H&R Sport Cup Kit is not a coilover — it is a matched spring and damper package using OEM-style shock absorbers paired with H&R’s sport springs. This retains the OEM shock mounting geometry and serviceability of the E82’s factory suspension while delivering a meaningful performance upgrade. The OEM-style dampers are valved specifically for H&R’s sport spring rates, ensuring the spring and damper work together as a matched system. The result is more predictable, more comfortable, and more capable than sport springs on worn factory shocks — and simpler to install and service than a full coilover system.

Key Features

• ~2.0" Lowering: Approximately 2.0 inches of ride height reduction — aggressive lowering that meaningfully lowers the E82’s centre of gravity, reduces body roll, and delivers a performance stance. This is a performance-oriented lowering amount — verify tyre clearance and alignment capability at your intended ride height before installation
• Progressive Spring Rate Design: H&R’s progressive spring rate provides a compliant initial response for street driving comfort while stiffening progressively under higher cornering loads — delivering both everyday usability and the increased roll stiffness needed for performance driving. Superior to a linear spring rate for a street/track dual-use application on the E82
• Matched Sport Dampers: OEM-style sport dampers valved specifically for H&R’s sport spring rates — a complete, matched package that eliminates the unpredictable handling and accelerated damper wear that results from fitting sport springs to unmatched or worn factory shocks
• 128i and 135i Fitment: Covers both the 128i (N52 naturally aspirated inline-six) and 135i (N54/N55 turbocharged inline-six) — a single kit part number for both E82 engine variants. Confirm your specific engine variant is covered using H&R’s fitment guide before ordering
• E82 Coupe Specific: Engineered for the E82 coupe body style — the two-door 1 Series. The E82 is a shorter, lighter, more driver-focused platform than the E90 3 Series, with rear-wheel drive and near-50/50 weight distribution. The Sport Cup Kit is tuned for the E82’s specific suspension geometry and weight distribution
• H&R German Engineering: H&R is a German suspension manufacturer with decades of OEM supplier and motorsport experience — the Sport Cup Kit carries H&R’s engineering standards into a street performance application

Fitment

• BMW 128i E82 Coupe — N52 Inline-Six (2008–2013)
• BMW 135i E82 Coupe — N54 / N55 Inline-Six Turbo (2008–2013)

E82 coupe only — not compatible with E87 hatchback or other 1 Series body styles. Verify your specific production date and equipment level using H&R’s fitment guide — E82 suspension variants may differ by market and optional equipment. Professional installation and a four-wheel alignment are required after installation.

Specifications

• Brand: H&R
• Part Number: 31054-6
• Series: Sport Cup Kit
• Components: Progressive Sport Springs + OEM-Style Sport Dampers
• Lowering: ~2.0" (front and rear)
• Spring Design: Progressive Rate
• Weight: 85 lbs (complete kit)
• Application: BMW 128i / 135i E82 Coupe N52/N54/N55 (2008–2013)

Installation Note: Professional installation by a shop experienced with E82 suspension is strongly recommended. A four-wheel alignment with camber, caster, and toe adjustment is required after installation. At ~2.0" of lowering, verify front and rear tyre clearance before finalising installation.