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Coilover Race Springs

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Find Coilover Springs by size and rate

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Eibach Coilover Race Springs

The Bread and Butter of any Coilover System

ERS Coilover Springs are produced to motorsport-grade tolerances, retaining consistent rate and static height.

  • Available in a wide range of lengths, rates and diameters
  • Maximum travel in combination with smallest block heights
  • Ultra-lightweight - reduced unsprung mass
  • Highest linearity and guaranteed consistency

The Best in the Business

Eibach's ERS line has evolved over the years to be the world's most prominent, comprehensive and superior Race Spring System. Eibach Race Springs are all manufactured in series production, often repeated, with a strong manufacturing experience. Thus, Eibach constantly achieves the most linear spring characteristic (rate) while maintaining the lowest tolerances and the highest quality in the industry.

Eibach Coilover Race Spring illustration

Coilover Spring Gallery

Porsche w/ Eibach Coilover Race Springs (full size)
BMW E36 M3 w/ Eibach Coilover Race Springs (full size)
Supra w/ Eibach Coilover Race Springs (full size)
Corvette w/ Eibach Coilover Race Springs (full size)

ERO Off-Road Race Springs

Eibach Offroad Springs

The Ultimate in Durability and Strength

Off-road racing requires special attention when it comes to race springs, which is why Eibach has developed a comprehensive ERO (Eibach Racing Off-Road) System. The ERO line provides race teams with the lengths, rates, and diameters necessary to produce the perfect suspension setup for any off-road environment.

  • Available in 2.5”, 3” and 3.75” ID
  • Free lengths from 8” to 33”
  • Rated from 100lbs to 800lbs
  • Precise manufacturing tolerances
  • Silver powder coat finish

Race-Proven

Our off-road race springs are designed and engineered to withstand the extreme conditions and high performance demands of off-road racing all while retaining their rate and dimensions. Baja, Dakar, King of the Hammers - you name it. ERO springs have brought teams to the podium worldwide.

Eibach ERO spring drawing
Team Eibach Jason Coleman Offroad Race Truck

Block-Stable Design

In some cases, a dual rate setup may rely on a softer initial spring to completely compress (block), creating a transition point into the heavier main spring. ERO springs are designed to safely go to block, again and again, without losing rate or free length.

ERO spring drawing: free length (Lo) and height at block (Lc)

Lo: Free Length | Lc: Height of Spring at Block

ERO Vehicle Gallery

Monster Energy Bronco at King of the Hammers on Eibach ERO Springs (full size)
Honda Racing Ridgeline on Eibach ERO Springs (full size)
Coleman Motorsports Off Road Truck on Eibach ERO Springs (full size)
Eibach ERO Springs installed on truck (full size)

ERS System Race Spring System

Eibach Race Spring Combinations

Endless Combinations

By combining Eibach Main, Tender and/or Helper springs, the suspension engineer or weekend racer can create the perfect combination of spring rates for the ultimate suspension set-up. With our extensive range of motorsport spring sizes and rates - over 1,400 different options - our ERS system is unsurpassed in performance and flexibility.

Dual Spring System

Suspension tuning is a precise balance. On one hand, the spring system should be soft enough to absorb track irregularities assuring maximum adhesion, while on the other hand the spring system must be firm enough to reduce the body roll, squat, and dive of the vehicle during cornering, acceleration and braking. For optimum balance, a dual-spring system can be used.

Eibach Dual Spring System
Eibach Dual Spring System

Main & Tender System

The Eibach Main and Tender Spring concept provides a softer initial rate when both springs are compressed together, then delivers the desired firmer final rate once the tender spring closes completely. The Main Spring has a linear-rate characteristic and determines the final rate of the system. The Tender Springs are available in linear or progressive-rate and determine the initial rate of the spring system.

Main & Helper System

A Helper Spring is used to prevent the Main Spring from becoming loose in the spring seat when the suspension is unloaded or at full droop. The Helper Spring, unlike the Tender Spring, has very little spring rate, and therefore has no effect on the suspension characteristics of the vehicle. Up to 6” (150mm) of spring-to-perch gap can be covered with the use of a Helper Spring.

Eibach Dual Spring System
Eibach Dual Spring System

Bump & Spring Rubber System

Through on-track development, Eibach has engineered a spring and cap system light weight and compact enough to fit Pavement Series setups, with maximum amounts of linear travel needed for Dirt Series Racers. The Consistent performance of the Eibach Bump Spring system translates to increased aero efficiency, maximum grip and superior control at the limit.

The Eibach Main and Spring Rubber system allows you to add progressive rate to your linear Main spring allowing you to precisely tune your spring characteristics on the track without having to disassemble any suspension components saving you important setup time.

Eibach Race Spring Stack on Midget Racing Vehicle

Multi-Spring Systems

Spring Rate is defined as the amount of force required to move the spring a given distance, which means a 100lb/in spring will travel 1 inch for every 100lb of force exerted on the spring.

In a multi-spring system, the misconception is that the first spring will carry the entire load before the second spring begins to compress. This is untrue. In the example below, two 100lb/in springs are stacked. Each spring will still move one inch for every 100lb of force. With these factors, the combined rate of a multi-spring system can be determined.

K1=Rate of Secondary Spring
K2=Rate of Primary Spring
Kcombined=Combined Rate of System
Kcombined =
(K1 × K2)
(K1 + K2)
Multi Spring System Diagram

Block Transition System

In a multi-rate system, the rate transition must be taken into consideration. There are two ways to achieve this transition. In the first method, the softer upper (Secondary) spring is allowed to coil bind or “block”. This is the moment of transition to the Primary spring's characteristics alone.

Forced Transition System

The second method is to utilize a forced transition. This is most commonly achieved with a crossover ring. The crossover ring threads on the shock body allowing the tuner to adjust the point at which the slider (spring coupler) makes contact and stops the compression of the Secondary spring.

This is superior as it allows for the tuner to select from a vast range of transition points, thus creating the most efficient use of the travel.

Single Linear Spring

This graph demonstrates a single 10” 100lb/in spring through it’s travel range.

Spring rate graph of a single 10 inch 100 lb/in linear spring

Block Transition System

This graph shows a dual-rate system using a 10" 100lb/in spring stacked on a 16" 300lb/in spring. This demonstrates the transition that occurs when the 10" 100lb/in spring reaches its block height. This allows for a softer initial rate for smoothness on smaller bumps with a stronger final rate for big jumps or full compression scenarios.

Spring rate graph of a block transition dual-rate system

Forced Transition (at Different Positions)

This last graph demonstrates a 10" 300lb/in stacked on a 16" 300lb/in spring. The three different rate curves show the effect that the position of the stop ring has on the transition of the rate. Notice that as you decrease the travel of the secondary spring (block the initial rate out sooner), the travel of the overall stacked system decreases. Comparing the curves side by side demonstrates the control that a proper dual-rate combination provides over travel and rate transition.

Spring rate graphs of a forced transition system at three stop ring positions

Race Spring Gallery

Porsche Racecar on Eibach Race Spring System (full size)
TCR Racecar on Eibach Race Spring System (full size)
GT3 Racecar on Eibach Race Spring System (full size)
Midget Racecar on Eibach Race Spring System (full size)

Shop Race Springs

34 parts
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  1. Helper Spring

    Single Spring

    2.25 in I.D. x 3.00 in, 12 lb/in57 mm I.D. x 76 mm, 2.1 N/mm

    Mfg# HELPER225

    $78.99

    Availability: In Stock This product is in our Burlington warehouse.

    Ships tomorrow

  2. Helper Spring

    Single Spring

    1.88 in I.D. x 2.98 in, 12 lb/in48 mm I.D. x 76 mm, 2.1 N/mm

    Mfg# HELPER188

    $78.99

    Availability: In Stock (USA) This product ships directly from Eibach USA.

    Ships Oct 14

  3. Linear Tender Spring

    Single Spring

    2.25 in I.D. x 2.72 in, 150 lb/in57 mm I.D. x 69 mm, 26.3 N/mm

    Mfg# 0175.225.0150

    $114.99

    Availability: In Stock (USA) This product ships directly from Eibach USA.

    Free shipping in Canada, ships Oct 14

  4. Helper Spring

    Single Spring

    2.50 in I.D. x 3.00 in, 11 lb/in64 mm I.D. x 76 mm, 2 N/mm

    Mfg# HELPER250

    $78.99

    Availability: In Stock This product is in our Burlington warehouse.

    Ships tomorrow

  5. Linear Tender Spring

    Single Spring

    2.25 in I.D. x 3.78 in, 250 lb/in57 mm I.D. x 96 mm, 43.8 N/mm

    Mfg# 0225.225.0250

    $114.99

    Availability: In Stock This product is in our Burlington warehouse.

    Free shipping in Canada, ships tomorrow

  6. Linear Tender Spring

    Single Spring

    2.25 in I.D. x 3.22 in, 200 lb/in57 mm I.D. x 82 mm, 35 N/mm

    Mfg# 0225.225.0200

    $114.99

    Availability: Backorder Available Backorder available to Eibach USA.

    Free shipping in Canada

  7. Helper Spring

    Single Spring

    2.25 in I.D. x 5.91 in, 9 lb/in57 mm I.D. x 150 mm, 1.6 N/mm

    Mfg# HELPER225T

    $78.99

    Availability: In Stock (USA) This product ships directly from Eibach USA.

    Ships Oct 14

  8. Linear Tender Spring

    Single Spring

    3.00 in I.D. x 4.72 in, 50 lb/in76 mm I.D. x 120 mm, 8.8 N/mm

    Mfg# 0350.300.0050

    $114.99

    Availability: In Stock (USA) This product ships directly from Eibach USA.

    Free shipping in Canada, ships Oct 14

  9. Linear Tender Spring

    Single Spring

    2.50 in I.D. x 3.94 in, 300 lb/in64 mm I.D. x 100 mm, 52.5 N/mm

    Mfg# 0225.250.0300

    $114.99

    Availability: In Stock (USA) This product ships directly from Eibach USA.

    Free shipping in Canada, ships Oct 14

  10. Helper Spring

    Single Spring

    3.00 in I.D. x 4.84 in, 23 lb/in76 mm I.D. x 123 mm, 4 N/mm

    Mfg# HELPER300T

    $85.99

    Availability: In Stock (USA) This product ships directly from Eibach USA.

    Ships Oct 14

  11. Linear Tender Spring

    Single Spring

    2.50 in I.D. x 2.79 in, 250 lb/in64 mm I.D. x 71 mm, 43.8 N/mm

    Mfg# 0175.250.0250

    $114.99

    Availability: Backorder Available Backorder available to Eibach USA.

    Free shipping in Canada

  12. Linear Tender Spring

    Single Spring

    2.25 in I.D. x 3.35 in, 250 lb/in57 mm I.D. x 85 mm, 43.8 N/mm

    Mfg# 0175.225.0250

    $114.99

    Availability: In Stock (USA) This product ships from our USA partner warehouse.

    Free shipping in Canada, ships Oct 7

  13. Linear Tender Spring

    Single Spring

    1.88 in I.D. x 3.00 in, 33 lb/in48 mm I.D. x 76 mm, 5.8 N/mm

    Mfg# 0300.188.0033

    $92.99

    Availability: In Stock (USA) This product ships directly from Eibach USA.

    Ships Oct 14

  14. Helper Spring

    Single Spring

    2.50 in I.D. x 6.00 in, 5 lb/in64 mm I.D. x 152 mm, 0.9 N/mm

    Mfg# HELPER250T

    $78.99

    Availability: In Stock (USA) This product ships directly from Eibach USA.

    Ships Oct 14

  15. Helper Spring

    Single Spring

    2.36 in I.D. x 2.95 in, 11 lb/in60 mm I.D. x 75 mm, 2 N/mm

    Mfg# HELPER60

    $78.99

    Availability: In Stock (USA) This product ships directly from Eibach USA.

    Ships Oct 14

  16. Linear Tender Spring

    Single Spring

    2.50 in I.D. x 3.00 in, 200 lb/in64 mm I.D. x 76 mm, 35 N/mm

    Mfg# 0175.250.0200

    $114.99

    Availability: In Stock (USA) This product ships directly from Eibach USA.

    Free shipping in Canada, ships Oct 14

  17. Linear Tender Spring

    Single Spring

    2.50 in I.D. x 3.90 in, 150 lb/in64 mm I.D. x 99 mm, 26.3 N/mm

    Mfg# 0225.250.0150

    $114.99

    Availability: Backorder Available Backorder available to Eibach USA.

    Free shipping in Canada

  18. Linear Tender Spring

    Single Spring

    2.50 in I.D. x 3.55 in, 200 lb/in64 mm I.D. x 90 mm, 35 N/mm

    Mfg# 0225.250.0200

    $114.99

    Availability: In Stock (USA) This product ships directly from Eibach USA.

    Free shipping in Canada, ships Oct 14

  19. Linear Tender Spring

    Single Spring

    2.50 in I.D. x 5.00 in, 25 lb/in64 mm I.D. x 127 mm, 4.4 N/mm

    Mfg# 0350.250.0025

    $114.99

    Availability: In Stock (USA) This product ships directly from Eibach USA.

    Free shipping in Canada, ships Oct 14

  20. Linear Tender Spring

    Single Spring

    2.50 in I.D. x 5.00 in, 77 lb/in64 mm I.D. x 127 mm, 13.5 N/mm

    Mfg# 0350.250.0075

    $114.99

    Availability: In Stock This product is in our Burlington warehouse.

    Free shipping in Canada, ships tomorrow

  21. Linear Tender Spring

    Single Spring

    2.50 in I.D. x 4.72 in, 100 lb/in64 mm I.D. x 120 mm, 17.5 N/mm

    Mfg# 0350.250.0100

    $114.99

    Availability: In Stock (USA) This product ships directly from Eibach USA.

    Free shipping in Canada, ships Oct 14

  22. Helper Spring

    Single Spring

    3.00 in I.D. x 2.95 in, 46 lb/in76 mm I.D. x 75 mm, 8 N/mm

    Mfg# HELPER300

    $85.99

    Availability: In Stock (USA) This product ships directly from Eibach USA.

    Ships Oct 14

  23. Helper Spring

    Single Spring

    3.75 in I.D. x 6.07 in, 45 lb/in95 mm I.D. x 154 mm, 7.9 N/mm

    Mfg# HELPER375

    $107.99

    Availability: In Stock (USA) This product ships directly from Eibach USA.

    Free shipping in Canada, ships Oct 14

  24. Progressive Tender Spring

    Single Spring

    2.50 in I.D. x 3.46 in, 250 / 550 lb/in64 mm I.D. x 88 mm, 43.8 / 96.3 N/mm

    Mfg# 0200.250.250-550

    $128.99

    Availability: In Stock (USA) This product ships directly from Eibach USA.

    Free shipping in Canada, ships Oct 14

  25. Linear Tender Spring

    Single Spring

    2.50 in I.D. x 3.27 in, 300 lb/in64 mm I.D. x 83 mm, 52.5 N/mm

    Mfg# 0175.250.0300

    $114.99

    Availability: In Stock (USA) This product ships directly from Eibach USA.

    Free shipping in Canada, ships Oct 14

  26. Linear Tender Spring

    Single Spring

    2.25 in I.D. x 3.39 in, 150 lb/in57 mm I.D. x 86 mm, 26.3 N/mm

    Mfg# 0225.225.0150

    $114.99

    Availability: Backorder Available Backorder available to Eibach USA.

    Free shipping in Canada

  27. Linear Tender Spring

    Single Spring

    1.88 in I.D. x 3.00 in, 55 lb/in48 mm I.D. x 76 mm, 9.6 N/mm

    Mfg# 0300.188.0055

    $92.99

    Availability: In Stock (USA) This product ships directly from Eibach USA.

    Ships Oct 14

  28. Linear Tender Spring

    Single Spring

    2.50 in I.D. x 5.00 in, 50 lb/in64 mm I.D. x 127 mm, 8.8 N/mm

    Mfg# 0350.250.0050

    $114.99

    Availability: In Stock (USA) This product ships directly from Eibach USA.

    Free shipping in Canada, ships Oct 14

  29. Helper Spring

    Single Spring

    2.00 in I.D. x 2.83 in, 11 lb/in51 mm I.D. x 72 mm, 2 N/mm

    Mfg# HELPER200

    $78.99

    Availability: In Stock (USA) This product ships directly from Eibach USA.

    Ships Oct 14

  30. Helper Spring

    Single Spring

    Mfg# HELPER250M

    $78.99

    Availability: In Stock (USA) This product ships directly from Eibach USA.

    Ships Oct 14

  31. Helper Spring

    Single Spring

    Mfg# HELPER300TS

    $92.99

    Availability: Backorder Available Backorder available to Eibach USA.

  32. Helper Spring

    Single Spring

    2.75 in I.D. x 3.94 in, 17 lb/in70 mm I.D. x 100 mm, 3 N/mm

    Mfg# HELPER70

    $78.99

    Availability: In Stock (USA) This product ships directly from Eibach USA.

    Ships Oct 14

  33. Linear Tender Spring

    Single Spring

    2.50 in I.D. x 2.64 in, 150 lb/in64 mm I.D. x 67 mm, 26.3 N/mm

    Mfg# 0175.250.0150

    $114.99

    Availability: In Stock (USA) This product ships directly from Eibach USA.

    Free shipping in Canada, ships Oct 14

  34. Progressive Tender Spring

    Single Spring

    2.36 in I.D. x 4.76 in, 343 / 857 lb/in60 mm I.D. x 121 mm, 60 / 150 N/mm

    Mfg# 50-60-0060/0150

    $128.99

    Availability: In Stock (USA) This product ships directly from Eibach USA.

    Free shipping in Canada, ships Oct 14

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