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Eibach ERS 12.00 in. Length x 2.50 in. ID Coil-Over Spring-Eibach-EIB1200.250.0500S
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Eibach ERS 12.00 in. Length x 2.50 in. ID Coil-Over Spring

Eibach
EIB1200.250.0500S
803050289131
Coilover Springs
20+ Units In Stock - Ships Next Business Day
$ 96.67 $ 87.00
$ 87.00

SKU: 1200.250.0500S   |   UPC: 803050289131

Eibach ERS 12.00 in. Length x 2.50 in. ID Coil-Over Spring - 500 lb/in Rate

The Eibach ERS 12.00 in. Length x 2.50 in. ID Coil-Over Spring delivers a 500 lb/in rate for coil-over suspension systems in racing and performance vehicles. Designed to fit 2.50 in. ID shock bodies from brands like QA1, Bilstein, and Penske, it provides firm damping control for drag racing, road course, and autocross. Expect reliable load support and repeatable performance lap after lap.

Key Features

  • Spring Rate: 500 lbs/in for sharp response and stability under high cornering loads in track conditions.
  • Free Height: 12.00 in. matches common coil-over stroke requirements for full suspension travel.
  • Inside Diameter: 2.50 in. ensures drop-in compatibility with standard coil-over strut housings.
  • Construction: High-tensile chrome-silicon steel, shot-peened, preset, and double-tempered to resist sagging and fatigue.
  • Finish: Silver powder coat with laser-etched rate marking resists corrosion and simplifies inventory management.

Product Notes

  • Confirm shock valving matches 500 lb/in rate to avoid bottoming or harsh ride.
  • Inspect for proper bind under full compression before track use.
  • Packaged in rigid box to maintain shape during transit.

Installation Notes

  • Professional installation recommended.
  • Lubricate coils lightly with silicone spray for smooth perch seating.
  • Works with OEM or aftermarket coil-over perches and lock nuts; no adapters required.

This Part Fits

Year Make Model Submodel
Universal All Coil-Over Equipped Vehicles 2.50" ID Shocks (Drag/Road Race)
Universal All Coil-Over Equipped Vehicles Autocross/Street Performance

Why Choose Eibach?

  • Championship-winning design used in global racing series.
  • Industry-leading tolerances: ±1mm height, ±2.5% rate accuracy.
  • CNC-ground ends and proprietary wire for flawless coil bind resistance.

Frequently Asked Questions

  • Q: Does this fit specific coil-over kits?
    A: Yes, direct fit for QA1 Proma Star, Bilstein 5125, Penske 7500, and most 2.50 in. ID coil-overs in dragsters, formula cars, and kit cars.
  • Q: What material and treatments are applied?
    A: Chrome-silicon steel with shot-peening, stress-relief, and powder coating for 300% longer life than stock springs.
  • Q: What warranty coverage applies?
    A: Limited lifetime warranty on manufacturing defects when installed and used per guidelines.

Shipping & Handling

  • Method: UPS Ground
  • Availability: In stock - ships same or next business day
  • Packaging: Protective cardboard box, 13 x 4 x 4 in.
  • Weight: 4.8 lbs

Request For Information

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