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AST AST Linear Race Springs - 150mm Length x 60 N/mm Rate x 61mm ID - Single
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AST Linear Race Springs - 150mm Length x 60 N/mm Rate x 61mm ID - Single

AST
ASTAST-150-60-61
astAST-150-60-61
Coilover Springs
2 Units In Stock - Ships Next Business Day
$ 95.00 $ 85.50
$ 85.50

SKU: AST-150-60-61 | UPC: astAST-150-60-61

AST Linear Race Springs - 150mm Length x 60 N/mm Rate x 61mm ID - Single for Porsche Cayman Boxster Subaru WRX STI BMW 3 Series

AST Linear Race Springs feature a 150mm free length 60 N/mm spring rate and 61mm inner diameter in a single unit design for precision coilover builds. These springs fit AST coilover kits on Porsche Cayman 2006-2015 Boxster 1997-2004 Subaru Impreza WRX STI 2002-2014 and BMW 3 Series E90 E92 models. Expect linear response for sharp cornering stability and reduced body roll during track sessions.

Key Features

  • 60 N/mm Linear Rate: Delivers predictable suspension response ideal for track and autocross demands
  • 150mm Free Length: Matches common coilover stroke lengths for full travel without binding
  • 61mm Inner Diameter: Direct fit for AST and compatible 61mm perch housings on performance coilovers
  • Chrome-Silicon Steel Construction: Shot-peened heat-treated and preset for high fatigue strength under repeated loads
  • Powder Coated Finish: Resists corrosion in harsh racing environments for long service life

Product Notes

  • Sold as single spring order multiples for paired applications
  • Inspect coilover housing ID prior to installation for exact match
  • Packaged in protective tube to prevent distortion during transit

Installation Notes

  • Professional installation recommended.
  • Match spring to 61mm ID perch and retainer system exactly
  • Compatible with AST coilover hardware and top hats

This Part Fits

Year Make Model Submodel
2006-2015 Porsche Cayman Base S
1997-2004 Porsche Boxster Base Boxster S
2002-2007 Subaru Impreza WRX STI
2008-2014 Subaru Impreza WRX STI
2006-2013 BMW 3 Series E90 E92 M3

Why Choose AST?

  • Proven in European motorsport series and pro racing teams
  • Hand-built quality from Netherlands facility
  • Exact tolerances for repeatable suspension performance

Frequently Asked Questions

  • Q: Which coilover kits use this spring size?
    A: Designed for AST coilover series with 61mm ID housings on listed Porsche Subaru and BMW applications confirm via AST spring chart for your kit.
  • Q: What material and treatments are applied?
    A: High-tensile chrome-silicon steel shot-peened stress-relieved heat-treated and black powder coated for maximum durability.
  • Q: What warranty coverage applies?
    A: 1-year manufacturer warranty against defects with proof of professional installation and proper use.

Shipping & Handling

  • Method: UPS Ground
  • Availability: In stock - ships same or next business day
  • Packaging: Protective cardboard tube 6 x 6 x 10 inches
  • Weight: 2.4 lbs

Request For Information

Have questions about AST Linear Race Springs - 150mm Length x 60 N/mm Rate x 61mm ID - Single? Fill out the form below and we'll get back to you by the next business day.
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