• AST Suspension 5100 Series Coilovers (Includes Front/Rear Top Mounts) (True Coilover) - 1990-1999 BMW 3 Series 325i Coupe/Sedan (E36)
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AST 5100 Series Coilovers BMW 3 Series E36 90-99 | 318i/325i/M3 (ACC-B1105S)

AST 5100 Series Coilovers BMW 3 Series E36 90-99 | 318i/325i/M3 (ACC-B1105S)

ACC-B1105S

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The AST 5100 Series Coilovers for the BMW 3 Series E36 (1990-1999) are high-performance shock absorbers designed to enhance handling and stability. Featuring inverted, upside-down technology, these coilovers are race-proven and deliver superior strength and durability compared to standard twin-tube designs. The design improves suspension geometry under heavy lateral and braking loads, making them ideal for spirited street driving and track use. The adjustable rebound feature allows for precise tuning of ride characteristics, providing a customizable driving experience. Constructed with high-quality materials, these coilovers ensure consistent performance and long-lasting reliability, making them a top choice for enthusiasts seeking improved suspension performance.

Designed specifically for the 1990-1999 BMW 3 Series E36 models, including 318i, 325i, and M3 variants, these coilovers serve as direct replacements for factory suspension components. They are suitable for street, track, and performance driving applications, offering enhanced handling and cornering capabilities. Installation is straightforward, with bolt-on compatibility for the factory mounting points. The kit includes coilover shocks and necessary mounting hardware, providing a complete upgrade for your vehicle’s suspension system. These coilovers are ideal for drivers looking to improve their car’s performance and handling dynamics on both daily drives and competitive events.

Overview

The 5100 Series shock absorbers for the 1990-1999 BMW 3 Series 325i Coupe/Sedan (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: 1990-1999
  • 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
  • 1990 BMW 3 Series 325i Coupe/Sedan (E36)
  • 1991 BMW 3 Series 325i Coupe/Sedan (E36)
  • 1992 BMW 3 Series 325i Coupe/Sedan (E36)
  • 1993 BMW 3 Series 325i Coupe/Sedan (E36)
  • 1994 BMW 3 Series 325i Coupe/Sedan (E36)
  • 1995 BMW 3 Series 325i Coupe/Sedan (E36)
  • 1996 BMW 3 Series 325i Coupe/Sedan (E36)
  • 1997 BMW 3 Series 325i Coupe/Sedan (E36)
  • 1998 BMW 3 Series 325i Coupe/Sedan (E36)
  • 1999 BMW 3 Series 325i Coupe/Sedan (E36)
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