AST Suspension 5100 Series 1 Way Coil Over for Audi A3 8P & TT/TTS/TTRS 8J

  • AST Suspension 5100 Series 1 Way Coil Over Strut (ACU-A2105S)
NOTE: Image is a product example. Actual part may differ from image.
50.00 LBS
Direct Ship (shipping times may vary)
Calculated at checkout

VW/AUDI Performance Parts: AST Suspension 5100 Series 1 Way with Coil Over for Audi A3 8P & TT/TTS/TTRS 8J (ACU-A2104S)


Product Features & Benefits

The 5100 Series shock absorbers 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.


  • Floating piston design with high pressure nitrogen means no cavitation around the piston.
  • CNC Machined Stainless Steel Rod End Spacers
  • 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.
  • Rubber bushings for OE shock mounts.
  • Optional spherical top mounts.
  • Optional DLC Coated shafts.
  • Optional DDP piston (double digressive).
  • Rebuildable.
  • Optional custom valving.
  • Works with OE top mounts
  • Droplinks Required. (part#DLA-VW1-S add $379.00)

Additional Details


  • 2003 - 2013 Audi A3(8P)
  • 2006 - 2013 Audi TT / TTS / TT RS (8J)

How does a Monotube design works?

Monotube design 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.

Please Note Body needs to be modified when front top mounts (part# TMA-V06-A1-20F) are used with 5100

Product Reviews

Write Review

This product hasn't received any reviews yet. Be the first to review this product!

Compatible With

Eurotek Tuning Logo
accepted credit cards