Area 51 Shock Service
Area 51 Suspension

Hyperco B-Series Coil-Over Spring — 2.5" ID

$94.95

Hyperco's B-Series Coil-Over Spring — 2.5" ID, wound from high-tensile chrome silicon wire, ±2% rate tolerance. A NASCAR Cup Series supplier. The most precisely rated 2.5" coil-over spring available for dirt Late Model racing — the rate you order is the rate you get, every time.

  • 2.5" ID — fits standard Late Model coil-over hardware
  • Available in 4", 5", 6", 7", 8", 9", 10", 12", 14", and 16" lengths
  • Rates: 85–1000 lb/in — full working range for every Late Model corner position
  • ±2% rate tolerance — tightest available
  • High-tensile chrome silicon wire — won't take a set
  • Dark blue powder coat — easy ID at a glance

Select your length and rate below. Not sure what to run? Area 51 can help you build the right spring combo for your car and track.

3 x 10Layer stacks
FastPull design
FitmentShock specific
  • Built for mud, dust, and rubbered-up race nights
  • Simple fitment-based ordering flow
  • Strong brand presentation for racers and dealers

Dirt Racing Grip

Area 51 Suspension are built for circle track racers who deal with mud, dust, rubber, and debris. Match the correct part number to your shock shield and keep your vision clear on race night.

What's Included

  • 3 x 10-layer shock service stacks
  • 30 total shock service per package
  • Part-number specific fitment
  • Race-ready Area 51 packaging

Works With

Use the Area 51 Shock Services Guide to match this part number to the correct shock brand, shield style, size, and shape before ordering.

Check Fitment

Racer Review

★★★★★

"Clear, simple, and race-night ready. Exactly what dirt racers need when grip starts going away."

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