AST 02-08 BMW Z4 Coupe/Convertible - E85/E86 5100 Street Series Coilovers

Name: AST 02-08 BMW Z4 Coupe/Convertible - E85/E86 5100 Street Series Coilovers
Brand: AST
SKU: A03L ACU-B1101SD
Price: 2913.04 USD
Availability: OutOfStock

$3,230.00 $2,913.04 Save $316.96

SKU: A03L ACU-B1101SD

In Stock

Ships by Jun 13

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Non-Returnable Item

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Moderate — 2–4 hours

Description

The AST Suspension ACU-B1101SD is a 5100 series 1-way adjustable coilover set, offering 12 positions of rebound adjustment and ride-height adjustment. It features an inverted strut design (front) and a divorced rear setup (like OEM) for optimized road balance on street or track. These coilovers include springs and are designed to utilize OEM top mounts. They are a monotube, gas-pressurized design with a floating piston, preventing aeration for consistent performance and responsive valving. The dampers are rebuildable at a certified AST service center.

Fitment

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Specifications

Brand	AST
Part Number	A03L ACU-B1101SD

Videos

AST Suspension 5100 vs 5200 vs 5300: Which Coilovers Should You Choose?

The Suspension Upgrade I Should Have Done To My BMW 335i A Long Time Ago! - AST 5100

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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