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AST Suspension 5100 Series 1-Way True Rear Coilovers Porsche 997 GT2 | GT3 | GT3RS (2WD) 2007-2012
$4060.00
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The 5100 Series shock absorbers for the 2007-2012 Porsche 911 997 GT2 | GT3 | GT3RS (2WD) 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:
  • Product: AST Suspension 5100 Series 1-Way Coilovers
  • Adjustment: 1-Way
  • System: Front Coilover, True Rear Coilover
  • Front/Rear Ratio: Front = 60% / Rear = 40%
  • Strut/Shock Type: Clamp McPherson strut / Rear: Fork 2 pin strut
  • Spring Kit: Included
Fitment:
  • Porsche 911 997 GT2 | GT3 | GT3RS (2WD) 2007-2012
Note:
  • Pictures are used for marketing purposes only, actual product may vary.




Proposition 65

WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

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The Story Behind AST Suspension

Advanced Suspension Technology (AST) has continuously evolved since its inception in 2000. From progressive lowering springs to 3-way adjustable dampers with external reservoirs, AST Suspension offers a wide range of products for almost any application. 

AST Suspension was founded by Piet Kreeft and Peter Smits; their roots in suspension development and industrial manufacturing pushed the company to the forefront even in its early stages. For nearly 15 years, Piet supported professional auto and motorcycle racing for KONI Suspension at several prestigious circuits around the globe. Piet later left KONI to start Aragosta Suspension, becoming a leader in both motocross and GP racing. Aragosta built upon his success and expanded the product range to include most vehicle applications. Piet later formed HI TECH, where he worked with INDY cars and was very active in the chassis and suspension space.

After leaving HI TECH, Piet formed AST with Peter Smits of Smits Factory in 2000. Together, the knowledgeable pair combined their years of technical expertise to design and construct new suspension systems. AST earned its name through unparalleled quality control and manufacturing flexibility, setting it apart from the competition in the suspension industry. Apart from its impressive sport and street damper product lineup, AST also succeeded in European motorsports. 

AST Suspension in North America

AST Suspension NA was established to offer the U.S. the same high-performance shocks used by enthusiasts and race teams throughout Europe. With a demanding market for more powerful vehicles, handling and control is just as important to keep that power in check. 

AST Suspension NA was formed and is headquartered in Irvine, California, at the heart of the U.S. automotive industry. The U.S. team specializes in serving the North American market via sales, product support, and service, working directly with the AST and Moton headquarters in Holland. 

Dedicated to Quality Products

AST Suspension is dedicated to exceeding its customer’s expectations in terms of support, service, and innovative, high-quality products. AST designs, manufactures, and sells shock absorbers and related products with a specialization in the production of shock absorbers for vehicles serving normal street use and competition purposes as race, rally, autocross, quads, karts, etc. AST is able to achieve such high-quality parts by controlling the entire production process. Its headquarters is set in the same building as Smits factory, where 80% of the parts are made. This ensures continuity and the European quality guarantee that the company promises.

AST suspension takes pride in its work and is continuously working to improve its products by way of technical know-how, experience, and testing on circuits, roads and specific terrain.

AST Suspension at Vivid Racing

If you are ready to upgrade your vehicle’s suspension, then you have come to the right place. Vivid Racing carries a wide range of quality products from AST, including coilovers, bushings, mounts, sway bar links, steering components, and more! Please call our sales team at (480) 966-3040 with any questions you may have regarding parts or fitment.

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Sale price None
Wholesale price $3,593.10
Shipping Weight: 44.10
Length: 29
Width: 16
Height: 14
Product Added At Monday 29 August, 2022
Product Modified At Friday 11 July, 2025
Imported By ETLOverride
Last Edited By Turn_API
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Emissions Info
Carb Approved -
Carb Number -
Epa Status N/A
Prop65 Unknown
Carb Required -
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