AST 97-06 BMW E46 RWD 5100 Street Series Coilovers (ACS-B1101SD)

The AST 97-06 BMW E46 RWD 5100 Street Series Coilovers is a coilover kit from AST Suspension. Part ACS-B1101SD.

Looking for the perfect everyday road balance? The 5100 Street Non-Inverted Suspension delivers comfort and control in one refined package. Experience a high-quality monotube coilover system, 1-way adjustable for rebound and ride height. The front coilover design ensures precise handling, while the OEM-style rear setup maintains daily comfort. Built with fixed rear spring rates, OEM-compatible top mounts, and rebuildable dampers, this system offers lasting performance. Engineered and made in the Netherlands, the 5100 STREET suspension maximizes grip and stability, giving your car the perfect balance between comfort and control on every drive.

Features and benefits

Monotube dampers offer a large piston to control the adjustability of rebound damping. Non inverted. These dampers can adjust in rebound (return to extension). Front dampers utilize a coilover design, the rear is a divorced setup like OEM.

Details

• Brand: AST Suspension
• Series: AST 5100
• Part number: ACS-B1101SD
• Manufacturer description: AST 97-06 BMW E46 RWD 5100 Street Series Coilovers
• Kit includes (partial list from the manufacturer data): Springs

Fitment

• Vehicle: BMW 3 Series (E46)
• Years and models on file: 1997-1999 BMW 318ti Base; 2000 BMW 323Ci Base; 1999-2000 BMW 323i Base; 2001-2006 BMW 325Ci Base; 2001-2005 BMW 325i Base; 2000 BMW 328Ci Base; 1999-2000 BMW 328i Base; 2001-2006 BMW 330Ci Base; 2001-2005 BMW 330i Base; 2003-2005 BMW Z4 3.0i and more
• Suspension packages vary within a model line (electronic dampers, engine, body style and drive type). Compare the application above with your car before ordering. Not sure? Ask us and we will check it against your VIN.

Before you order

Coilover kits are built for a specific chassis, drivetrain (RWD / AWD) and model range. Compare the manufacturer description above with your car. Cars with factory electronic dampers (for example EDC, PASM or adaptive M suspension) may need a cancellation kit, which is not included unless listed. An alignment is needed after installation. Questions? Ask us.

About AST Suspension

AST (Advanced Suspension Technology) is a Dutch suspension brand. It develops monotube coilover systems and lowering springs for road and track cars, from 1-way street setups to 3-way motorsport dampers, and its coilovers are engineered and made in the Netherlands.

Shipping & returns

• Orders are processed within 1–3 business days; standard delivery is 3–7 business days within the United States.
• This item is temporarily out of stock at our distributor. We confirm the restock date with you after you order.
• We currently ship within the U.S. only. See our Shipping Policy.
• 30-day returns on unused parts in original packaging — see our Return Policy.

Installation at Team ANBD

Team ANBD is a performance shop in Andover, New Jersey. An alignment is recommended after any ride-height change, and we can align or corner-balance the car, and prep track cars. Book an appointment or ask us about installation and fitment before you order.