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AST 5100 / Whiteline MAX-G Coilover Kit for 2013-23 FRS / BRZ / 86 - used

What we have here is a set of AST 5100 inverted monotube adjustable coilovers that we used on our 2013 FR-S for literally TWO track days. We haven't been a full line AST dealer since 2012 but back in 2018 there was a private label AST deal with Whiteline and we got a set of these to use... 

We took a ton of data and have lots of lap times showing the improvements before/after this coilover install. We ran it on the 215mm stock sized tires initially then later on 315mm Rival-S tires, and these spring rates worked great. 

These AST 5100s utilize race proven, monotube, adjustable inverted damper technology, producing an extremely strong damper, providing superior suspension geometry under heavy lateral and braking loads for both road and track applications. The large 44.5mm diameter strut shaft delivers increased surface area loading, eliminating 'bending' during high impact loading that is associated with conventional dampers. The 5100 single adjustables incorporate a 12 click rebound adjustment to increase rebound damping force, delivering improvements in vehicle body motion without making the car overly stiff on compression. These work great for everyday daily driver use and track racing utilizing the customized damper to spring rate ratio whilst providing the flexibility to handle mild changes in spring rates.

The 5100 is hand built in The Netherlands using high quality precision machined components and decades of motorsport experience to ensure optimum performance and can be serviced by any AST dealer - but this set is in perfect shape and barely has any track or road use on them. These 5100s offer four corner ride height adjustment and rebound damping adjustment.

This 86 coilover kit includes Vorshlag 86 "high caster" adjustable monoball camber plates and radial bearing upper perches. These come with 280 #/in springs and tenders at all 4 corners, which ride very well on the street but again - worked damn well with monster 18x11" wheels and 315mm BFG Rival-S tires, producing 1.4g of lateral grip!


  • 30-60mm lowering range and 280 lb/in spring rate for the front
  • 30-60mm lowering range and 280lb/in spring rate for the rear
  • 12 click rebound damping adjustment
  • Four corner ride height adjustment
  • Includes springs and tenders as shown
  • Camber/caster from Vorshlag
  • We used these for TWO track days... nearly new!
  • Fits all 2012-23 FRS / BRZ / GT86 (both 1st and 2nd generation)
  • One set in stock, ready to ship TODAY