AST Suspension 51mm coilover springs, 51mm ID linear race springs

AST Suspension

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SKU: AST-200-30-51

AST Suspension Linear Coilover Spring - ID: 51mm

$90.25

MSRP $95.00 You save $4.75

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Fitment Notes

All fitment information on our website is provided by the manufacturer. It is the customer's responsibility to thoroughly read the product description and confirm fitment before placing an order and proceeding with installation.

Unless specified otherwise, all suspension products are designed for 2WD vehicles only. Any notes or descriptions related to electronic damping systems (EDC, DDS, etc.) apply strictly to vehicle fitment. Aftermarket coilovers are not compatible with OEM electronic damping control systems unless explicitly stated.

*Product images may not represent the actual SKU.

Handling Time

All handling times are estimates and may change at any time.

  • In Stock: 1 business day
  • Out of Stock: 4-6 weeks
  • Custom-Builds: 4-6 weeks
  • Special Order: 4-6 weeks
30-Day Returns

Not quite right? No problem — we offer hassle-free 30-day returns on eligible items. A few exclusions apply.

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2-Year Manufacturer Warranty

AST Suspension guarantees the Customer that when used normally and correctly, the Products are free from defects with regard to their material or workmanship. In the event that the Product is nevertheless defect, the Customer who is a Consumer may invoke the guarantee scheme which he/it is entitled to under the Dutch Consumer Sales Act [wet inzake consumentenkoop]. For other Customers, a warranty period of two years will apply. In no event shall any warranty apply for Products used for abnormal uses such as motor sport and/or auto sport and all its various disciplines.

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Product Details

These AST Suspension 51mm coilover springs are linear race springs with a 51 mm (2.01 in.) inner diameter, in 200 mm and 250 mm lengths with rates from 30 to 180 N/mm.

AST makes its race springs from extreme high tensile chrome silicon wire, coiled on Wafios compression coiling machines, then pre-blocked and corrosion protected to OEM specifications. The part number gives the length, the rate and the inner diameter in that order, so AST-200-100-51 is 200 mm long, 100 N/mm and 51 mm inside.

Standard Features

  • Linear spring rate.
  • Extreme high tensile chrome silicon wire.
  • Coiled on Wafios compression coiling machines.
  • Pre-blocked before shipping.
  • Corrosion protection according to OEM specifications.
  • Lifetime warranty against breaking.
Specifications
Part Name Linear Coilover Spring
Spring Shape Linear
Inner Diameter 2.01 in. (51 mm)
Spring Length 7.87 in. (200 mm), 9.84 in. (250 mm)
Spring Rate 30 to 180 N/mm
Material Chrome silicon wire
Country of Origin Netherlands
Quantity Sold Individually
Notes These springs do not fit OEM top mounts.
Sizes and Part Numbers
Part Number Length Spring Rate Block Length Force at Block Stroke
AST-200-30-51 7.87 in. (200 mm) 30 N/mm (171 lb/in.) - - -
AST-200-40-51 7.87 in. (200 mm) 40 N/mm (228 lb/in.) - - -
AST-200-50-51 7.87 in. (200 mm) 50 N/mm (286 lb/in.) 77 mm 6150 N 123 mm
AST-200-60-51 7.87 in. (200 mm) 60 N/mm (343 lb/in.) 80 mm 7200 N 120 mm
AST-200-70-51 7.87 in. (200 mm) 70 N/mm (400 lb/in.) 84 mm 8120 N 116 mm
AST-200-80-51 7.87 in. (200 mm) 80 N/mm (457 lb/in.) 96 mm 8320 N 104 mm
AST-200-90-51 7.87 in. (200 mm) 90 N/mm (514 lb/in.) 92 mm 9720 N 108 mm
AST-200-100-51 7.87 in. (200 mm) 100 N/mm (571 lb/in.) 93 mm 10700 N 107 mm
AST-200-110-51 7.87 in. (200 mm) 110 N/mm (628 lb/in.) - - -
AST-200-120-51 7.87 in. (200 mm) 120 N/mm (685 lb/in.) - - -
AST-200-130-51 7.87 in. (200 mm) 130 N/mm (742 lb/in.) - - -
AST-200-140-51 7.87 in. (200 mm) 140 N/mm (799 lb/in.) - - -
AST-200-150-51 7.87 in. (200 mm) 150 N/mm (857 lb/in.) 104 mm 14400 N 96 mm
AST-200-160-51 7.87 in. (200 mm) 160 N/mm (914 lb/in.) 123 mm 12320 N 77 mm
AST-200-170-51 7.87 in. (200 mm) 170 N/mm (971 lb/in.) - - -
AST-200-180-51 7.87 in. (200 mm) 180 N/mm (1028 lb/in.) - - -
AST-250-30-51 9.84 in. (250 mm) 30 N/mm (171 lb/in.) - - -
AST-250-40-51 9.84 in. (250 mm) 40 N/mm (228 lb/in.) - - -
AST-250-50-51 9.84 in. (250 mm) 50 N/mm (286 lb/in.) 109.2 mm 7040.000000000001 N 140.8 mm
AST-250-60-51 9.84 in. (250 mm) 60 N/mm (343 lb/in.) 114 mm 8160 N 136 mm
AST-250-70-51 9.84 in. (250 mm) 70 N/mm (400 lb/in.) - - -

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