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AST 5100 Series Monotube Coilovers w/Springs BMW E46 3 Series incl. M3 00-06

$2,660.16 Sale:$2,394.14

AST Suspension

Model #ACU-B1101S

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AST 5100 Series Monotube Coilover BMW E46 3 Series incl. M3 00-06

Taking the knowledge and experience learned with the 4000 Series of dampers, AST is now building the new 5000 Series dampers.One key feature on the 5000 series shocks is Modularity, which Makes them easily upgradeable. This provides an upgrade path for customers on a tight budget that want an adjustable, high performance, race-ready shock but cant quite afford the double adjustable 5200 or triple adjustable 5300. Simply purchase 5100s, and when youre ready, send your ASTs to an authorized rebuild center to upgrade them to 5200s or 5300s with remote reservoirs. Rest knowing that your shock absorber investment will perform today and in the future, as your budget and needs grow.

  • Springs Included
  • High end, track ready suspension that is totally streetable
  • modular design - Fully upgradeable to 5200 or 5300 spec
  • Rebound Adjustable ("Singles"), without reservoir
  • Certain Models will have remote reservoirs, for adequate travel
  • 44.5mm diameter shaft struts, Inverted
  • Aluminum cylinder, threaded body shocks, factory Mounting style
  • Synthetic hydraulic fluid
  • Special Order Kits are shipped directly from the Netherlands.
  • ETA is approximately 6-8 weeks
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AST Suspension was founded by Piet Kreeft and Peter Smits, their roots in suspension development and industrial manufacturing pushed AST to the forefront even in the early stages of the company. Piet Kreeft started his career at KONI Suspension’s motorsport department. For nearly 15 years, Piet supported professional auto and motorcycle racing for KONI at some of the most prestigious circuits around the world. Piet later left KONI to start Aragosta Suspension, becoming a leader in motocross and GP racing. Building upon this success, Aragosta expanded their product range to include most vehicles and participated at World Rally championships, Kartcross and Touring car events, setting records in the Paris-Dakar Rally in both the T1 and T2 categories.

Eight years later, Piet formed HI TECH where he worked with INDY cars for nearly a decade. Piet was very active in INDY CAR chassis and suspension and worked alongside drivers including the world renown Emerson Fittipaldi. After leaving HI TECH, Piet formed AST with Peter Smits of Smits Factory in 2000. Together, the duo combined their years of technical expertise to innovate and manufacture new suspension systems. AST made its name through unparalleled quality control and manufacturing flexibility, setting it apart from many others in the suspension industry.

In the early 2000’s AST set the stage for its future success.In 2002, Marleen Theuws joined the company as its operations manager, supporting its development into a global brand offering both street and sport dampers. AST also succeeded in European motorsport, having brought on Julian van Dijken in 2007 as an additional in-house engineer in charge of product support and development. In 2010, AST was chosen as the new shock supplier for the GRAND-AM Continental Tire Sports Car Challenge.

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

AST has become a provider of high-performance shock absorbers used by many prominent manufacturers and racing teams worldwide.