• AST Suspension 5100 Series Coilovers (Includes Front/Rear Top Mounts) (True Coilover) - 1993-1999 BMW 3 Series 320i Convertible (E36)
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AST 5100 Series Coilovers F&R Top Mounts | BMW 3 Series 320i/325i/328i/323i/ M3 (93-99) (ACC-B1105S)

AST 5100 Series Coilovers F&R Top Mounts | BMW 3 Series 320i/325i/328i/323i/ M3 (93-99) (ACC-B1105S)

ACC-B1105S

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The AST 5100 Series Coilovers F&R Top Mounts for the BMW 3 Series (93-99) are high-performance shock absorbers designed to enhance handling and suspension precision. Featuring inverted, upside-down technology, these coilovers are race-proven and deliver superior strength and durability compared to standard twin-tube designs. The 5100 Series provides improved suspension geometry under heavy lateral and braking forces, making them ideal for spirited street driving and track use. The adjustable rebound feature allows for fine-tuning ride characteristics, ensuring optimal performance and comfort. Constructed with high-quality materials, these coilovers are engineered to withstand demanding driving conditions and provide consistent damping performance.

Designed specifically for 1993-1999 BMW 3 Series models including 320i, 325i, 328i, 323i, and M3, these coilovers are a direct upgrade for stock suspension components. They are suitable for both street and track applications, offering enhanced handling and stability. Installation is bolt-on, with top mounts included for a straightforward upgrade. These coilovers are ideal for enthusiasts seeking improved cornering, reduced body roll, and a more responsive driving experience. Compatibility is optimized for vehicles with the E36 chassis, and no additional modifications are typically required for proper fitment.

Overview

The 5100 Series shock absorbers for the 1993-1999 BMW 3 Series 320i Convertible (E36) utilize inverted / upside down technology. The inverted design is race proven technology and produces an extremely strong damper, providing better suspension geometry under heavy lateral and braking loads as seen in a road and track environment.

The 5100 Series shock absorbers give your car a better performance than the standard twin tube design. With the 5100 Series suspension you can adjust rebound with one knob. The adjust platform allows you to adjust the ride height of your car. AST suspension shock bodies are specially designed to keep maximum stroke, even with a lower ride height.

How a Monotube design works?

Monotube design is essential for performance. The oil and nitrogen are separated by a floating piston, and allows the use of a larger piston, increasing the damper performance and sensitivity felt by the driver, all this added together produces more grip, gives more control and driver feedback from your vehicle.

What is a rebound adjustment?

Rebound controls the rate of extension of your shock absorber. By changing the rebound you can directly change the characteristics of the vehicle.

Features

  • Floating piston design with high pressure nitrogen means no cavitation around the piston.
  • 14mm diameter internal shaft.
  • 44.5 mm diameter shaft struts, inverted.
  • Steel cylinder body shocks, inverted.
  • High end, track ready suspension.
  • Rebound adjustable ('Singles').
  • Low friction seal.
  • Adjuster knobs permanently mounted on the dampers.
  • Designed to use OEM top mounts.
  • Rubber bushings for 'eye' shock mounts.
  • Includes springs.
  • Rebuildable.
  • Optional spherical top mounts.
  • Optional DLC (diamond like carbon) coated shafts.
  • Optional DDP (double digressive piston).
    • Double Digressive Pistons are recommended for use on the non-driven wheels.
    • 4WD/FWD vehicles: DD pistons for both rear axle struts/shocks.
    • RWD vehicles: DD pistons for both front axle struts/shocks.
  • Optional custom valving.
Specifications
  • Part Number: ACC-B1105S
  • Product: AST 5100 Series
  • Adjustment: 1 Way
  • System: Coil Over
  • Product Note: True Coilover
  • Front/Rear Ratio: Front = 60% / Rear = 40%
  • Strut/Shock Type: Front: McPherson strut / Rear: Eye 2 pin strut
  • Model Years: 1993-1999
  • Make: BMW
  • Model: 3 Series
  • Chassis: E36
  • Spring Kit: Included
  • Top Mounts: Front / Rear Included
  • Front Top Mounts: TMA-B11-A1-20F - Camber adjustable
  • Optional Front Top Mounts: Not Available
  • Rear Top Mounts: TMA-B01-B1-30R - Solid top mounts (no camber adjustment)
  • Adjustable Front Droplinks Available? No
  • Adjustable Front Droplinks Required? No
  • Adjustable Rear Droplinks Available? No
  • Adjustable Rear Droplinks Required? No
  • DDP Pistons Included? No
  • DDP Pistons Available? Yes
  • DLC Coated Shafts Included? No
  • DLC Coated Shafts Available? Yes
  • QDC Included? No
  • TUV Approved?
  • Comments: Works with OE top mounts.
Vehicle Fitment
  • 1993 BMW 3 Series 320i Convertible (E36)
  • 1994 BMW 3 Series 320i Convertible (E36)
  • 1995 BMW 3 Series 320i Convertible (E36)
  • 1996 BMW 3 Series 320i Convertible (E36)
  • 1997 BMW 3 Series 320i Convertible (E36)
  • 1998 BMW 3 Series 320i Convertible (E36)
  • 1999 BMW 3 Series 320i Convertible (E36)
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