• AST Suspension 5100 Series Coilovers (Includes Front/Rear Top Mounts) (True Coilover) - 2005-2012 Porsche 911 3.8 4WD (997)
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AST 5100 Series Coilovers Porsche 911 3.8 4WD (997) (ACC-P2204S)

AST 5100 Series Coilovers Porsche 911 3.8 4WD (997) (ACC-P2204S)

ACC-P2204S

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The AST 5100 Series Coilovers for the Porsche 911 3.8 4WD (997) 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. They improve suspension geometry under heavy lateral and braking loads, making them ideal for both street and track use. The adjustable rebound feature allows for precise tuning, enhancing ride quality and responsiveness. Constructed with high-quality materials, these coilovers provide improved damping performance, better control, and a more aggressive stance for your vehicle.

Designed specifically for 2005-2012 Porsche 911 3.8 models with all-wheel drive, these coilovers are a direct replacement for the factory suspension components. They are suitable for enthusiasts seeking improved handling, cornering, and overall driving dynamics. Installation is typically bolt-on, requiring no major modifications, and the kit includes the necessary shock absorbers with adjustable rebound control. These coilovers are perfect for track days, spirited driving, or upgrading your street car for better performance and stability under demanding conditions.

Overview

The 5100 Series shock absorbers for the 2005-2012 Porsche 911 3.8 4WD (997) 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-P2204S
  • 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: Clamp McPherson strut / Rear: Fork 2 pin strut
  • Model Years: 2005-2012
  • Make: Porsche
  • Model: 911
  • Chassis: 997
  • Spring Kit: Included
  • Top Mounts: Front / Rear Included
  • Front Top Mounts: TMA-P08-A1-20F - Camber adjustable
  • Optional Front Top Mounts: TMA-P12-B1-20F - Solid top mounts (no camber adjustment)
  • Rear Top Mounts: TMA-P11-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
  • 2005 Porsche 911 3.8 4WD (997)
  • 2006 Porsche 911 3.8 4WD (997)
  • 2007 Porsche 911 3.8 4WD (997)
  • 2008 Porsche 911 3.8 4WD (997)
  • 2009 Porsche 911 3.8 4WD (997)
  • 2010 Porsche 911 3.8 4WD (997)
  • 2011 Porsche 911 3.8 4WD (997)
  • 2012 Porsche 911 3.8 4WD (997)
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