Bilstein B12 Pro Kit – BMW 135i (E82)

OVERVIEW

The BILSTEIN B12 (Pro-Kit) for the BMW 1 Series is for drivers wanting handling, comfort and satisfaction while seeking out more curves to conquer. It combines BILSTEIN’s monotube gas pressure suspension with EIBACH Pro-Kit application-specific progressive-rate performance springs to provide increased comfort and performance.

With BILSTEIN dampers for improved lateral stability and EIBACH’s road-tested sport springs, the kit is fine-tuned to offer precise response and predictable control. BILSTEIN calls the matched damper-and-spring approach its Professional Cornering System (PCS).

The B12 (Pro-Kit) is the product of two companies at the top of their industries: the shock absorber experts at BILSTEIN and the spring professionals at EIBACH. BILSTEIN dampers use monotube gas pressure technology and are made in Germany.

SPECS

• BILSTEIN damper family: B12 (Pro-Kit) — fixed-height performance kit
• Internal design: monotube gas pressure
• Not ride-height adjustable — the B12 (Pro-Kit) is a fixed-height kit; BILSTEIN’s threaded, height-adjustable kits are the B14 and B16 lines
• Springs: EIBACH Pro-Kit, application-specific progressive rate
• Position: front and rear (complete four-corner kit)
• Finish: dampers yellow / springs dark grey
• Lowering: up to 40 mm
• Made in Germany
• Warranty: BILSTEIN Limited Lifetime Warranty (as published by BILSTEIN for this part number)

PARTS INCLUDED

• Four BILSTEIN B12 (Pro-Kit) performance dampers — front and rear
• Four EIBACH Pro-Kit application-specific progressive-rate lowering springs — front and rear
• Complete kit as supplied by BILSTEIN; see the installation instructions for the full bill of materials.

TECH RESOURCES

Additional Parts Required

• Four-wheel alignment. A full four-wheel alignment is required after installation — camber, caster and toe all change when ride height changes.
• Professional installation. BILSTEIN requires that the work be carried out by a qualified technician on a chassis hoist with proper spring-compression equipment; improper installation risks serious injury.
• Check EDC. Confirm whether your car is equipped with Electronic Damping Control before ordering — EDC cars require different mounting components and BILSTEIN lists separate part numbers for them.
• Installer-supplied: chassis hoist or jack stands, spring compressor, and a torque wrench — do not use impact tools on suspension fasteners.

Installation

• BILSTEIN shock absorber and spring mounting instructions (E4-WM5-Y180A00, DE/EN, PDF)

Notes

• BILSTEIN lists this kit for the BMW 128i and 135i 2008–2012. BILSTEIN publishes generic mounting instructions for this kit rather than a vehicle-specific guide; use them alongside the BMW factory repair procedure for your chassis.

PART NUMBER

• 46-180537 — BILSTEIN B12 (Pro-Kit) suspension kit, BMW 128i / 135i 2008–2012

VEHICLE APPLICATIONS