Bilstein B12 Pro-Kit 46-276339 – BMW M3 (E9x)

OVERVIEW

The BILSTEIN B12 (Pro-Kit) is a matched, fixed-height performance suspension package: a complete set of BILSTEIN monotube dampers paired with application-specific EIBACH Pro-Kit progressive-rate lowering springs, providing moderate lowering between 24 and 40 mm depending on application.

Dampers and springs are tuned together for each specific vehicle rather than sold as generic parts, which is what BILSTEIN calls its Professional Cornering System (PCS): precise response, excellent performance and predictable control, plus a lower, action-ready stance.

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.

SPECS

• BILSTEIN series: B12 (Pro-Kit) — fixed-height performance suspension kit
• Internal design: monotube
• Not ride-height or damping adjustable
• Springs: EIBACH Pro-Kit, application-specific progressive rate
• Position: front and rear (complete four-corner kit)
• Finish: dampers yellow / springs dark grey
• Lowering: moderate, 24–40 mm depending on application
• Warranty: BILSTEIN Limited Lifetime Warranty

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

TECH RESOURCES

Additional Parts Required

• Four-wheel alignment after installation — camber and toe change when ride height changes.
• Professional installation. BILSTEIN states that shock absorber installation requires special tools and expert knowledge and should be performed by a qualified suspension specialist, preferably on a chassis hoist.
• Installer-supplied tools: spring compressor and torque wrench.

Installation

• BILSTEIN mounting instructions E4-WM5-Y180A00 (DE/EN, PDF)
• BILSTEIN installation instructions — “Important! Read this first” safety notice (PDF)

Notes

• BILSTEIN lists this kit for the BMW M3 2008–2013. BILSTEIN catalogs a second B12 (Pro-Kit) for the same M3 years, 46-276346, and a separate kit for cars without EDC, 46-180698. BILSTEIN’s dealer application data lists 46-276339 for M3s with electronic suspension (EDC); confirm your car’s EDC equipment with Speed Logic before ordering.
• BILSTEIN warranty statement (PDF)

PART NUMBER

• Bilstein part number: 46-276339

VEHICLE APPLICATIONS