Specification
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Progressive Coil Springs
Landrum Progressive Coil Springs for circle track cars give you rugged and dependable performance that’s trusted by racers nationwide.
How Do Landrum Progressive Coil Springs Improve Handling and Performance?
Landrum Progressive Coil Springs deliver rugged, dependable performance trusted by racers nationwide. These springs offer superior handling with varying stiffness throughout the suspension travel. They start soft, providing better grip and smoother handling on rough tracks. As the spring compresses, it becomes stiffer, preventing bottoming out and improving stability under high load. This balance enhances cornering ability, reduces chassis roll, and adapts to different racing conditions.
We worked closely with racers to develop Landrum Progressive Coil Springs, ensuring they deliver the performance, durability, and long-term consistency you need.
What is the Difference Between Progressive Coil Springs and Constant Rate Coil Springs?
While constant rate coil springs are wound to have equal spacing between the coils, coil spacing of progressive springs varies with narrow spacing at one end of the spring, and wider spacing at the other.
- Constant rate coil springs compress at a linear rate, meaning rate of force needed to compress the spring a certain amount remains the same. For example, a spring with a 300 pound-per-inch linear rate (also known as the rate of deflection) will compress one inch when 300 lbs. of compression force are applied. The spring will compress another inch if an additional 300 lbs. of force is added, and so on.
- With Progressive rate coil springs, the rate of deflection increases as the as the spring is compressed. The spring has a softer rate at the beginning of its range of travel. So, it can easily cushion small compression forces and shock loads. As compression forces increase the spring progresses to a higher rate to handle larger compression forces.
What is the Benefit of Progressive Springs?
When it comes to circle track racing, the initial lower spring rate allows the suspension to smoothly transfer weight as the car enters a corner, and the higher spring rate comes into play as the spring compression load increases.
What Metal are Landrum Springs Made With?
Landrum produces coil springs with the highest quality US made High Tensile Chrome Silicon Alloy Steel. This results in springs with superior strength, reliability, and the ability to retain their original high-performance qualities after repeated use.
Landrum Progressive Coil Spring Sizes
Diameter: 5” OD
Length: 13”
Rates:
- 125-300 lb./in.
- 150-350 lb./in.
- 175-400 lb./in.
- 200-450 lb./in.
Watch this video to learn how Progressive Coil Springs work.
Related products
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Landrum Street Stock/Stock Appearing Front Coil Springs are engineered for racing classes that require stock appearing front springs and don’t require use of spacers or weight jacks.
Street Stock/Stock Appearing Front Coil Springs Performance
- Listening to racers, Landrum engineers springs that deliver the performance they need.
- Our lightweight, durable, precision racing springs are made to the tightest tolerances in the industry. They’re guaranteed to hold their tolerance to 2% and we prove it with a dyno sheet included with each spring.
- Landrum Performance Springs deliver and maintain reliable and consistent performance for the high demands of stock car racing.
Precision Spring Manufacturing
- The highest grade of US made High Tensile Chrome Silicon wire is used for manufacture. This wire will maintain accurate spring rate and free length.
- Our springs are cold-wound, not hot-wound and then are properly heat-treated and stress-relieved.
Street Stock/Stock Appearing Front Coil Springs Sizes
Street Stock and Stock Appearing Front Coil Springs are available in a choice of diameters, free lengths, and spring rates to fit your application.
- 5” and 5.5” Outer Diameters
- 11” and 12” Free Lengths
- Rates of 100-1400 lbs. per inch
Additional Landrum Performance Springs technical information can be found here.
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Landrum Performance Front Drag Racing Coil Springs are designed to deliver the performance, reliability, and consistency you need to win. Landrum front drag race springs are taller than OEM springs and use softer rates to give your car the correct ride height while providing more stored energy for instant weight transfer during launch. This helps to give you increased torque control, reduced wheel hop, and faster 60ft and 1/4-mile ET’s.
Landrum drag race springs are available for the front suspension of GM vehicles and are offered in configurations to fit OEM A-Arms and Aftermarket A-Arms with no modifications required. Springs with a 5” outer diameter and 18” length are available for 1964-1972 GM vehicles, and springs with a 5.5” outer diameter and 18” length are offered for 1973 and newer models.
Front Drag Racing Coil Spring Rates
Our Front Drag Racing Coil Springs are available in a range of rates including:
- 150 lbs./in.
- 165 lbs./in.
- 180 lbs./in.
- 200 lbs./in.
- 225 lbs./in.
- 250 lbs./in.
Technical Information
All front springs are closed and ground on one end to provide proper contact with the frame. The opposite end is either open to properly fit into the lower control arm of OEM A-Arms or closed for Aftermarket A-Arms.
Landrum Performance Front Drag Racing Coil Springs are light weight, high travel and made with the highest-grade High Tinsel Chrome Silicon Steel wire.
The drag race springs are cold wound, not hot wound. Each is properly heat treated and stress relieved to ensure the sides of the spring remain parallel during installation.
All Landrum Front Drag Racing Coil Springs use standardized testing procedures to ensure the best quality and performance.
Our springs are powder coated and not plated which avoids hydrogen embrittlement, a condition that can be caused by electroplating and can weaken metal.
Each spring is manufactured with the highest tolerance in mind and is designed with the correct pitch and height ratio to insure a consistent rate throughout the entire cycle.
More technical and application information can be found here.
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Spring Compressor for Long Length Coil Springs
This Spring Compressor makes it easy to install our 18” Front Drag Racing Coil Springs. Standard spring compressors just aren’t long enough to properly compress 18” springs, but our spring compressor is. The spring compressor is inserted through the top shock absorber opening and a long length threaded rod allows the compressor fingers to reach down to the bottom of the spring. A position adjustable bearing located toward the top of the rod seats on the top of the shock opening so the threaded rod turns freely when the spring compressor is tensioned or loosened.
Retail Price: $169.00
To purchase a spring compressor:
- Add a spring compressor to your Front Drag Racing Coil Springs order.
- Or to purchase a spring compressor separately click here.
Download Spring Compressor Instructions:
Download “Spring-Compressor-Instructions-2.0.pdf” Spring-Compressor-Instructions-2.0.pdf – Downloaded 12606 times – 199.22 KB_______________________
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For over 25 years, Landrum’s Gold Series High Performance Coil Springs have been the trusted choice of racers seeking unmatched durability, consistency and performance. Whether you race on dirt or pavement, our racing coil springs deliver the precision and reliable consistency you need to dominate the track.
Why Choose Landrum Gold Series High Performance Coil Springs?
- Proven Track Record: Trusted by racers for over 25 years, Landrum’s Gold Series Springs are the preferred choice for Saturday night racers.
- State-of-the-Art Engineering: Our high performance coil springs are designed using cutting-edge spring design software to engineer the coil springs that racers are asking for.
- Premium Materials: We use high-tensile chrome silicon alloy steel, made in the USA, to manufacture track car suspension springs that provide maximum strength and perform as designed, even after repeated compression and extension.
- Rigorous Quality Control: Each Gold Series Spring is individually tested for precision and consistent performance, ensuring your springs meet exact specifications.
The Best Engineering and Materials for Racing Performance
We combine the latest spring design software with state-of-the-art engineering methods to produce the best high-performance coil springs on the market. Built for the most demanding races, Landrum springs ensure your suspension is up to the challenge.
- Superior Materials: Made from high-tensile chrome silicon alloy steel, our high performance coil springs provide unmatched strength, durability and lightness, so you can race with confidence.
- Precise Engineering: Designed with cutting-edge technology to ensure the highest performance for dirt and pavement racing.
- Testing for Perfection: We test each racing coil spring for tensile and compressive stiffness before manufacturing, ensuring every spring meets our rigorous quality standards.
Proven Performance – See the Landrum Difference
We test each Landrum Gold Series Spring to ensure it is within 2% of specification. We back it up by providing a dyno sheet showing how the spring performs as it is compressed. Providing you with confidence in every race. No other manufacturer of coil springs for racing does this.
Gold Series High Performance Springs – Available Sizes
Our Gold Series High Performance Coil Springs are available in a range of ODs, lengths, and rates to fit the needs of your racing setup. Whether you’re looking for front coil springs or rear coil springs, Landrum has the right solution for you.
Gold Series Front Coil Springs:
- 5” OD Front Springs (8” Length): Rates from 400 lb./in to 1000 lb./in
- 5” OD Front Springs (9.5” Length): Rates from 400 lb./in to 1600 lb./in
- 5” OD Front Springs (8.5” Length): Rates from 400 lb./in to 1500 lb./in
- 5” OD Front Springs (8” Length): Rates from 400 lb./in to 1500 lb./in
Gold Series Rear Coil Springs:
- 5” OD Rear Springs (8” Length): Rates from 125 lb./in to 450 lb./in
- 5” OD Rear Springs (10.5” Length): Rates from 100 lb./in to 475 lb./in
- 5” OD Rear Springs (13” Length): Rates from 100 lb./in to 475 lb./in
- 5” OD Rear Springs (14” Length): Rates from 100 lb./in to 400 lb./in
- 5” OD Rear Springs (15” Length): Rates from 75 lb./in to 275 lb./in
- 5” OD Rear Springs (16” Length): Rates from 75 lb./in to 375 lb./in
- 5” OD Rear Springs (18” Length): Rates from 75 lb./in to 125 lb./in
- 5” OD Rear Springs (20” Length): Rates from 50 lb./in to 100 lb./in
Landrum Service – Your Partner in Racing Excellence
At Landrum, we don’t just sell high performance coil springs; we work with racers and chassis builders to design and produce the perfect suspension solution for their needs. We take pride in providing personalized support and ensuring every customer gets the exact high-performance spring they need to win.
Ready to Upgrade Your Suspension?
Get Your Landrum High Performance Coil Springs Today! We’re ready to help you take your racing to the next level with springs that provide outstanding strength, precision, and reliable consistency.
Use our parts finder or contact us to find the perfect high-performance coil springs for your race car.
See more Landrum competition suspension springs technical information here.
Want to know how stacking springs affects spring rate? Check out the video:
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What Are Tight Helix Coil Springs?
Landrum Tight Helix Coil Springs feature more coils and tighter coil spacing. This allows for a higher spring load rate with less travel. They also achieve coil bind faster than conventional springs.
Tight Helix springs feature closely wound coils for a higher number of coils per unit length than a spring with a wider pitch. This allows for a more compact design compared to wider pitch springs.
Many racers and dealers asked Landrum to make these springs, and we delivered. Multiple test sessions were performed to ensure the perfect tight helix rear coil spring.
What Are the Benefits of Tight Helix Coil Springs?
- Reduced spring bowing which avoids shock damage that can be caused by spring contact.
- Improved handling, braking and acceleration.
- Short spring length/high load spring rate provides for a higher spring rate in a confined area.
How do Tight Helix Springs Improve Handling, Braking and Acceleration?
The increased spring rate of tight helix racing springs helps to minimize body roll when the vehicle is subjected to lateral forces during cornering. This leads to more stable and predictable handling.
Tight helix racing springs can help improve the stability of the vehicle by reducing pitch and dive under braking and acceleration. This ensures that the tires maintain better contact with the track surface.
The Best Tight Helix Coil Spring Design
Landrum high performance engineering and materials provides racers with the best Tight Helix Coil Springs.
- Designed using the latest spring design software and state-of-the-art engineering technology.
- Produced with US made High Tensile Chrome Silicon Alloy Steel for superior strength, reliability, and the ability to retain their original high-performance characteristics after repeated use.
Landrum Tight Helix Coil Springs are tested to consistently be within 2% of specification. This ensures racers get the spring rate they are expecting. We prove it with a dyno sheet provided with each spring showing the performance of the spring as it is compressed. No other racing spring manufacturer does this.
Tight Helix Coil Spring Sizes
Landrum Tight Helix Coil Springs are designed for rear suspension applications and are currently available in the following sizes.
- 5.0” OD
- Free Length: 11”
- Rates: 175, 200, and 225 lbs. per inch
See more Landrum tech information here.