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.
Progressive Coil Springs for Circle Track Cars
In the 1960’s, Landrum Springs owner Robert Landrum, who was also a dirt oval racer, used his racing experience to engineer high performance racing springs that quickly became popular with local racers. As oval track racers nationwide discovered the performance advantage of Landrum Springs, the company became the go-to source for high performance racing springs.
Today, we continue to work closely with racers to deliver the best performing progressive rate coil springs. We ensure Landrum Performance Springs Progressive Coil Springs deliver the performance, durability and long-term consistency racers need to take the best set, every time.
What’s 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’s the Benefit of Progressive Springs?
When it comes to circle track racing, the initial lower spring rate allows the suspension to smoothly take a set as the car enters a corner, and the higher spring rate comes into play as spring compression load increases when weight transfers as the car progresses through the corner.
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 Performance Stock Appearing Double Pig Tail Rear Springs are made to resemble black painted stock double pig tail springs. Offered in 7″ OD x 14″ with a broad range of rates that make it easy to find the spring you need for the best handling, traction, and overall performance.
Stock Appearing Double Pig Tail Rear Springs are developed for circle track and drag racing classes that require stock appearing springs and don’t require use of spacers or weight jacks.
Landrum Performance Springs are for racers who demand the best spring performance, accuracy, durability, and consistency.
Made with Landrum Quality
- Stock Appearing Double Pig Tail Rear Springs are made with the best US made High Tensile Chrome Silicon Alloy Steel Wire for strength and reliability.
- Cold wound for strength, hardness, and close tolerance.
- Properly heat-treated and stress relieved.
- Our spring rate tolerances are tested to consistently be within 2% of specification. This ensures you get the spring rate you are expecting. We prove it with a dyno sheet provided with each spring showing the performance of the spring as it is compressed.
Stock Appearing Double Pig Tail Rear Springs – Sizes
- Designed for chassis that use double pigtail springs.
- 7” OD
- 14” Length
- Available Rates: 175, 200, 225, 250, 275, and 300 lbs. per inch
- Tip: Full size GM & Ford applications have an overall spring height of 14″ with a 7″ OD.
Additional Landrum Performance Springs technical information can be found here.
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Landrum Performance Stock Appearing Pig Tail Rear Springs are for circle track and drag racing classes that require stock appearing springs which use only one pig tail hookup and don’t require use of spacers or weight jacks.
The 5.5” OD Stock Appearing Springs are available in 9” and 11” lengths and are painted black for a stock appearance. A wide range of spring rates makes it easy to find the rate you need. Springs are closed and ground on both ends to fit stock mounting points.
Landrum Stock Appearing Pig Tail Rear Springs are built for those who demand the best spring performance and provide the reliability and durability you need to win.
If you need stock appearing double pig tail rear springs we have 14” free length springs available in a wide range of spring rates. You can see them here.
Premium Quality Materials and Manufacturing
- Landrum Performance Stock Appearing Rear Pig Tail Springs are produced with the highest quality US made High Tensile Chrome Silicon Alloy Steel Wire for strength and reliability.
- Landrum pig tail springs are cold wound, which creates steel that is stronger and harder than hot wound steel and allows for more exacting tolerances.
- Landrum springs have the tightest tolerances in the industry and are guaranteed to hold their tolerance to 2%. We prove it with a dyno sheet included with each spring.
Stock Appearing Pig Tail Rear Springs – Sizes
- 5.5” OD
- Available Free Lengths: 9” and 11”
- 9” Free Length Available Rates: 300 and 350 lbs. per inch
- 11” Free Length Available Rates: 150, 175, 200, 225, 250, 275, 300 and 350 lbs. per inch
Tip: Ford Mustang and GM metric chassis stock pig tail spring size is 5.5” OD with an 11” Free Length.
Additional Landrum Performance Springs technical information can be found here.
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What Makes Landrum Elite Series Coil Springs Ideal for IMCA and UMP Racing?
Landrum’s Elite Series Coil Springs are Landrum’s best performing linear rate conventional coil springs. These durable racing springs don’t take a set and maintain free height and specified rate. Each spring is tested to verify it meets a strict ±2% rate specification, and a dyno sheet is included to document its performance.
Engineered as Landrum’s ultimate linear rate conventional coil spring, Elite Series Coil Springs are built for the rigors of IMCA and UMP racing and trusted by racers seeking the best suspension setup to stay ahead of the competition. Landrum Elite springs deliver unmatched precision, durability, and performance on every lap.
How do Landrum Racing Springs Improve Performance?
- Precision Engineering and Manufacturing – Produced using cutting-edge engineering and manufacturing technology to ensure durability and the most consistent rates in the industry.
- Premium Materials – High Tensile Chrome Silicon Alloy Steel is used for springs with superior strength, reliability, and the ability to provide consistent performance without taking a set after being fully compressed repeatedly.
- Proven Performance – Every spring includes a dyno sheet showing it meets a strict ±2% rate specification. No other racing spring manufacturer does this.
- Track-Tested – Trusted by racers nationwide for durable and consistent performance.
- The Springs You Need – A wide range of sizes and rates help to fine-tune suspension setup.
- Made in the USA – Elite Series Coil Springs are manufactured at Landrum’s Mentone, Indiana facility.
Which Coil Spring Size Do You Need?
Landrum Elite Series Coil Springs come in a variety of sizes and rates to match your racing needs, whether for IMCA modifieds, UMP late models, stock cars, or other race cars.
Front Coil Springs (5″ and 5.5″ OD)
- 5″ OD x 9.5″ Length – Rates: 300 lb./in to 650 lb./in
- 5″ OD x 10.5″ Length – Rates: 300 lb./in to 450 lb./in
- 5.5″ OD x 9.5″ Length – Rates: 500 lb./in to 1100 lb./in
Rear Coil Springs (5″ OD)
- 5″ OD x 11″ Length – Rates: 125 lb./in to 350 lb./in
- 5″ OD x 12″ Length – Rates: 175 lb./in to 300 lb./in
- 5″ OD x 13″ Length – Rates: 80 lb./in to 275 lb./in
- 5″ OD x 16″ Length – Rates: 50 lb./in to 250 lb./in
- 5″ OD x 20″ Length – Rates: 50 lb./in to 75 lb./in
How Can Landrum Springs Help You Win?
Consistency and precision are the keys to victory. Landrum’s Elite Series Coil Springs give you the performance edge needed to dominate the track. Whether you are looking for springs for dirt modified cars, stock cars, dirt late models, or other types of IMCA and UMP race cars, we have the consistent performance racing springs you need to optimize your suspension set up for maximum control and traction.
Whether you need springs for dirt modifieds, stock cars, dirt late models, or other IMCA and UMP race cars, we offer consistent-performance racing springs designed to optimize your suspension for maximum control and traction.
Looking to fine-tune your suspension? Elite Series Coil Springs deliver the performance you need to gain a competitive edge—Landrum has you covered!
Learn more about the manufacture of Landrum coil springs here.
Want to know how stacking springs affects spring rate? Check out the video:
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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: