Coilover Springs
Coilover springs are high-performance, aftermarket suspension springs primarily used in Motorsports and Motor Racing. Hyperco’s coilover springs, also known as Hypercoils™, offer a wide range of free lengths and rates which provide the suspension designer latitude in creating a motion ratio for the suspension system that will permit an optimized damper or spring assembly to control a wide range of wheel travel. Shop standard Hyperco coilover springs below, or browse one of our other categories.
Standard Coilover Spring Inventory
Our coilover springs are used in motorsports and racing and provide more usable deflection at a lower weight. Shop online for rapid shipping on your spring. Most online orders ship within 24 business hours. Or, view other categories below.
Key Benefits of Hypercoils OBD/UHT Coilover Springs
- More usable deflection
- Less weight than standard suspension springs
- 2% rate linearity tolerance from 20% to 60% of deflection
- 4% rate linearity tolerance from 61% to 80% of deflection
- More resistant to bowing than competitor’s springs
- Designed to fit all standard hardware
- Maintain free length and rate throughout a near-infinite operational life
Hypercoils, or Coilover Suspension Springs, Come in Two Design Styles
Optimum Body Diameter (OBD) Coilover Springs
Optimum Body Diameter is the standard spring design for Hyperco coil-over springs. Featuring a unique design concept that adjusts the body diameter of the spring relative to the end coils, an OBD spring enables Hyperco to take full advantage of our ultra-high tensile spring materials by optimizing the applied stress by adjusting the spring’s body diameter.
Ultra High Travel (UHT) Coilover Springs
Our Ultra High Travel springs are designed specifically for light rate / high travel coil-over applications, such as dirt and pavement racing. The UHT design meets the requirements of soft spring and big bar set-ups, and remains consistent in free length and installed height. The Ultra High Travel design features a larger “body bulge” over Hyperco’s standard OBD design, which allows for additional deflection, rate linearity, and resistance to bowing
Coilover Spring Products
2.25-inch ID A-Series Coil-Over Springs
BASIC SPECIFICATIONS
- Free length range: 4” to 9”
- Spring rates: 150#/in to 3800#/in
- Material: High tensile chrome silicone
- Finish: Hyperco dark blue powder coat
- Spring Design(s): Optimum Body Diameter (OBD)
Note: Some 4″ and 5″ free lengths use a more traditional spring design as there are not enough active coils to allow an OBD design.
APPLICATIONS
- Motorsports: Circle Track and Sports Car Racing*
- Street Performance: Lighter weight sports cars where handling is important
- Off-Road: Motorcycles, Quads, Dune Buggies, etc.
2.5-inch ID B-Series Coilover Spring
BASIC SPECIFICATIONS
- Free length range: 4” to 16”
- Spring rates: 85#/in to 1300#/in
- Material: High tensile chrome silicone
- Finish: Hyperco dark blue powder coat
- Spring Design(s): Optimum Body Diameter (OBD), Ultra High Travel (UHT), Dual Rate UHT
Note: Some 4″ and 6″ free lengths use a more traditional spring design as there are not enough active coils to allow an OBD design.
APPLICATIONS
- Motorsports: Circle Track and Sports Car Racing*
- Street Performance: Lighter weight sports cars where handling is important
- Off-Road: Motorcycles, Quads, Dune Buggies, etc.
2-inch ID C-Series Coil-Over Springs
BASIC SPECIFICATIONS
- Free length range: 4” to 6”
- Spring rates: 50#/in to 600#/in
- Material: High tensile chrome silicone
- Finish: Hyperco dark blue powder coat
- Spring Design(s): Optimum Body Diameter (OBD)
APPLICATIONS
- Motorsports: Circle Track and Sports Car Racing*
- Street Performance: Lighter weight sports cars where handling is important
- Off-Road: Motorcycles, Quads, Dune Buggies, etc.
1.875-inch ID D-Series Coil-Over Springs
BASIC SPECIFICATIONS
- Free length range: 8” to 12”
- Spring rates: 250#/in to 3600#/in
- Material: High tensile chrome silicone
- Finish: Hyperco dark blue powder coat
- Spring Design(s): Optimum Body Diameter (OBD)
APPLICATIONS
- Motorsports: Circle Track Racing (Legend Cars, Micro-Sprints, Midgets)
- Off-Road: Motorcycles, Quads, Dune Buggies, etc.
3-inch ID E-Series Coil-Over Springs
BASIC SPECIFICATIONS
- Free length range: 6” to 18”
- Spring rates: 80#/in to 800#/in
- Material: High tensile chrome silicone
- Finish: Hyperco dark blue powder coat
- Spring Design(s): Optimum Body Diameter (OBD), Ultra High Travel (UHT)
Note: 6″ free lengths use a more traditional spring design as there are not enough active coils to allow an OBD design.
APPLICATIONS
- Motorsports: Circle Track Racing (Super Modified Pavement, Dirt Short Track)
- Off-Road & Off-Road Racing: Side x Side and UTV where spring travel and resistance to bowing is important
3.75-inch ID G-Series Coil-Over Springs
BASIC SPECIFICATIONS
- Free length range: 20" to 24"
- Spring rates: 500#/in to 700#/in
- Material: High tensile chrome silicone
- Finish: Hyperco dark blue powder coat
- Spring Design(s): Optimum Body Diameter (OBD)
APPLICATIONS
- Off-Road & Off-Road Racing: Pick-up Trucks, Light Trucks, Custom Build Off-Road Racing Vehicles
36mm ID I-Series Coil-Over Springs
BASIC SPECIFICATIONS
- Free length range: 4” to 5”
- Spring rates: 300#/in to 3900#/in
- Material: High tensile chrome silicone
- Finish: Hyperco dark blue powder coat
- Spring Design(s): Optimum Body Diameter (OBD)
APPLICATIONS
- Motorsports: IndyCar, Indy Lights, Sports Car Racing, Prototype Racecars, Tudor Classes, SSCA Racing
60mm ID M-Series Coil-Over Springs
BASIC SPECIFICATIONS
- Free length range: 5.5” to 9”
- Spring rates: 350#/in to 1300#/in
- Material: High tensile chrome silicone
- Finish: Hyperco dark blue powder coat
- Spring Design(s): Optimum Body Diameter (OBD)
APPLICATIONS
- Motorsports: Sports Car Racing
- Street Performance: Sports Cars, Sports Sedans where handling is important
70mm ID P-Series Coil-Over Springs
BASIC SPECIFICATIONS
- Free length range: 8” to 10”
- Spring rates: 350#/in to 600#/in
- Material: High tensile chrome silicone
- Finish: Hyperco dark blue powder coat
- Spring Design(s): Optimum Body Diameter (OBD)
APPLICATIONS
- Motorsports: Sports Car Racing
- Street Performance: Sports Cars, Sports Sedans where handling is important
