AST Linear Race Springs – 140mm Length x 80 N/mm Rate x 61mm ID – Single

SKU: AST-140-80-61 | UPC: astAST-140-80-61

Universal AST Linear Race Springs – 140mm Length x 80 N/mm Rate x 61mm ID – Single

AST Linear Race Springs deliver a consistent 80 N/mm rate in a compact 140mm length with 61mm inner diameter for precise coilover setups. This single spring suits universal race applications including custom track cars drift vehicles and performance builds requiring reliable suspension response. Engineered for demanding motorsport use it maintains shape under high loads for repeatable lap times.

Key Features

• Linear Rate Design: 80 N/mm constant rate provides predictable suspension travel and handling feedback in corners and straights
• Free Length: 140mm dimension supports lowered setups with sufficient droop and bump travel for track stability
• Inner Diameter: 61mm ID matches common coilover perches and retainers for direct fit in AST and compatible systems
• Construction Materials: High-tensile chrome-silicon steel shot-peened and heat-treated resists fatigue extends service life in race conditions
• Finish and Prep: Powder-coated exterior with preset winding prevents corrosion ensures zero initial sag from install

Product Notes

• Pair with matching springs for balanced ride height and alignment
• Store in dry conditions to preserve coating and performance
• Packaged in protective sleeve for damage-free transit

Installation Notes

• Professional installation recommended.
• Confirm perch and seat width align with 61mm ID before assembly
• Compatible with AST coilover bodies and standard threaded collars

This Part Fits

Year	Make	Model	Submodel
Universal	–	Race Coilover Builds	All Track/Drift Applications

Why Choose AST?

• Proven in international racing series from endurance to rally
• Made in Europe with tight tolerances for consistent rates
• Advanced manufacturing including dual grinding for smooth operation

Frequently Asked Questions

• Q: Does this spring fit specific coilover brands?
  A: Fits AST coilovers and any 61mm ID perch system verify seat dimensions and block length for your strut or shock
• Q: What material and treatment does it use?
  A: Chrome-silicon steel alloy shot-peened stress-relieved and powder-coated for maximum durability and corrosion resistance
• Q: What warranty applies?
  A: Covered by AST manufacturer defect warranty typically 1 year contact supplier for claim process and terms

Shipping & Handling

• Method: UPS Ground
• Availability: Clearance special order ships within 3-5 business days
• Packaging: Protective cardboard tube 6.3 x 2.8 x 2.8 inches
• Weight: 2.2 lbs