Bill Smith
Founder, 1929-2014
Speedy Bill
Since 1952
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America's Oldest Speed Shop ®

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Coil Springs and Accessories

Shop Street Rod Suspension At Speedway Motors

Speedway Motors is your number one source for street rod suspension components! Speedway stocks a huge inventory of suspension parts, plus the shocks from AFCO and Bilsein, four bar rear suspension kits, control arms and other specialized components you need to finish any hot rod suspension project. You can improve the ride of your classic street rod with Speedway’s selection of shocks, springs, or complete suspension kits. We also offer the best in air ride setups and coilover kits.

Featured Products
  • Mustang II Ride Height Adjuster Kit
    Mustang II Ride Height Adjuster Kit
    (Part #91034444)
    x
                
    • Adjust final ride height up to 2"
    • Fine tune your MII installation
    • Trimming and drilling of towers required

    Learn more about our ride height adjuster kits by reading Rod & Custom Magazine's tech article; Speedway Motors Ride Height Adjusters.

  • Mustang II Suspension Front Springs
    Mustang II Suspension Front Springs
    (Part #917230)
    x
                

    Our Mustang II springs come in rates from 275 thru 425 and in 13.5” free height/length. They will require cutting to the necessary length on the majority of applications. For the heavier vehicles such as full size pickup trucks and fat fendered cars the spring rate used will normally be in the 350-400 range. With Small Block and automatic a common rate is 375 to 400 and with the addition of A/C or a big block you will need to compensate for the additional weight and go to the next higher rate. Frame boxing and plating, accessories, and fuel tank size all play a part in selecting spring rate. When vehicle is sitting at ride height ready for test drive the lower control arms should be parallel with the ground or pointing down at a slight angle on the outer ends. The springs will settle some in the first couple of hundred miles so allowance for this should be made.

    • Powder coated gloss black
    • 13.5" spring length
    • Use the spring chart below to select proper rate

    Use the following chart to select your rate:

    • 1200 lb. Front  End Weight = 275 Rate Spring
    • 1300 lb. Front  End Weight = 300 Rate Spring
    • 1400 lb. Front  End Weight = 325 Rate Spring
    • 1500 lb. Front  End Weight = 350 Rate Spring
    • 1600 lb. Front  End Weight = 375 Rate Spring
    • 1700 lb. Front  End Weight = 400 Rate Spring
    • 1800 lb. Front  End Weight = 425 Rate Spring
  • Mustang II Coil Spring Cushion
    Mustang II Coil Spring Cushion
    (Part #91034343)
    x
                

    These are just like the stock Mustang II used on top of the front coil spring to eliminate noise and binding.

  • Lower Coil Spring Mount Perch
    Lower Coil Spring Mount Perch
    (Part #91720243)
    x
                Lower coil spring mount welds to 3" axle tube for mounting conventional 5" coil springs.
            
  • Carrera 9007-112 Coil-Over Snap Ring for 2 Inch Body Shock
    Carrera 9007-112 Coil-Over Snap Ring for 2 Inch Body Shock
    (Part #2551931)
    x
                

    Replacement snap ring for all Carrera coil-over shocks with 2" O.D. body.

    255-1931 Instructions (PDF)

  • AFCO 10243SR Aluminum Threaded Coil Over Snap Ring
    AFCO 10243SR Aluminum Threaded Coil Over Snap Ring
    (Part #10610243SR)
    x
                Low Profile Coil-over kit & replacement parts for AFCO Hot Rod & Pro Touring Series shocks. Clear coated billet aluminum.
            
  • QA1 7888-109 Coil-Over Thrust Bearing Kit
    QA1 7888-109 Coil-Over Thrust Bearing Kit
    (Part #7217888)
    x
                

    This kit installs at the bottom of the 2-1/2" I.D. coil-over spring and allows easier adjustment of your ride height.

    • Includes two bearings and four washers
    • Kit services two coilovers
    • 2.512" I.D.
    • 3.233" O.D.
  • Speedway Coil-Over Spring Rubbers
    Speedway Coil-Over Spring Rubbers
    (Part #917250)
    x
                

    Fine tune your spring rates with Speedway's spring rubbers. Available in 3/4" or 1" thickness with a full groove on each side to help seat within the spring. Easy installation, can be cut or trimmed to thinner or shorter sizes for minor rate changes.

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  • AFCO 23600CR 10 Inch Extreme Chrome Coil-Over Spring, 600 Rate
    AFCO 23600CR 10 Inch Extreme Chrome Coil-Over Spring, 600 Rate
    (Part #10623600CR)
    x
                

    Whether you are building a purpose-built drag strip machine or a beautiful show car, Extreme Chrome coilover springs will provide the strength, durability and show stopping good looks you desire. 

    • Industry exclusive 360° polished wire
    • High quality REAL chrome finish
    • Looks great from any angle - not just on the outside edge
    • 2-5/8" inside diameter

    All Afcoils carry a lifetime warranty to remain within 2% of the original nominal free height. 

    Afcoil Spring Rate Guide (Link)

    Coil-Over Mounting Guide (Link)

  • Leaf Spring Liner with Lip, 2-1/4 Inch
    Leaf Spring Liner with Lip, 2-1/4 Inch
    (Part #91033038)
    x
                Equal partners in a smooth-riding leaf spring suspension are quality shocks and friction-free movement of the spring leafs. This special compound of poly-vinyl plastic has a very "slippery" surface which works as a permanent dry lubricant to eliminate interleaf friction and squeaking. It also features a small lip to keep it in place. 

    One 20 ft. roll does one cross spring. Liner is less than 1/16" thick.

  • Mustang II Coil Spring Cushion
    Mustang II Coil Spring Cushion
    (Part #91034343)
    x
                

    These are just like the stock Mustang II used on top of the front coil spring to eliminate noise and binding.

  • Axle Spring Perch, Plain Forged Steel
    Axle Spring Perch, Plain Forged Steel
    (Part #91033047)
    x
                Works with 1928-34 Ford front ends with 1-3/4" wide cross spring. Extra long for lower shock mounts. Includes nylock nut.
    • 2-1/2" from top of threads to mid shoulder
    • 2-7/8" from top of threads to top of shoulder
    • Thread length is 1-7/8"
    • Distance from the top of the shoulder to the bottom of the threads is 4-3/4"

    Leaf Spring Measuring Guide (Link)

  • AFCO 23500CR 10 Inch Extreme Chrome Coil-Over Spring, 500 Rate
    AFCO 23500CR 10 Inch Extreme Chrome Coil-Over Spring, 500 Rate
    (Part #10623500CR)
    x
                

    Whether you are building a purpose-built drag strip machine or a beautiful show car, Extreme Chrome coilover springs will provide the strength, durability and show stopping good looks you desire. 

    • Industry exclusive 360° polished wire
    • High quality REAL chrome finish
    • Looks great from any angle - not just on the outside edge
    • 2-5/8" inside diameter

    All Afcoils carry a lifetime warranty to remain within 2% of the original nominal free height. 

    Afcoil Spring Rate Guide (Link)

    Coil-Over Mounting Guide (Link)

  • AFCO 22375CR 12 Inch Extreme Chrome Coil-Over Spring, 375 Rate
    AFCO 22375CR 12 Inch Extreme Chrome Coil-Over Spring, 375 Rate
    (Part #10622375CR)
    x
                

    Whether you are building a purpose-built drag strip machine or a beautiful show car, Extreme Chrome coilover springs will provide the strength, durability and show stopping good looks you desire. 

    • Industry exclusive 360° polished wire
    • High quality REAL chrome finish
    • Looks great from any angle - not just on the outside edge
    • 2-5/8" inside diameter

    All Afcoils carry a lifetime warranty to remain within 2% of the original nominal free height. 

    Afcoil Spring Rate Guide (Link)

    Coil-Over Mounting Guide (Link)

  • AFCO 28300-1CR 8 Inch Extreme Chrome Coil-Over Spring, 300 Rate
    AFCO 28300-1CR 8 Inch Extreme Chrome Coil-Over Spring, 300 Rate
    (Part #106283001CR)
    x
                

    Whether you are building a purpose-built drag strip machine or a beautiful show car, Extreme Chrome coilover springs will provide the strength, durability and show stopping good looks you desire. 

    • Industry exclusive 360° polished wire
    • High quality REAL chrome finish
    • Looks great from any angle - not just on the outside edge
    • 2-5/8" inside diameter

    All Afcoils carry a lifetime warranty to remain within 2% of the original nominal free height. 

    Afcoil Spring Rate Guide (Link)

    Coil-Over Mounting Guide (Link)

  • Front Frame Perch Kit, Standard Ride Height
    Front Frame Perch Kit, Standard Ride Height
    (Part #91633012)
    x
                

    Standard height front spring perch kit welds to a 3" diameter crossmember tube and works with a 1-3/4" wide leaf spring.

    Includes plain steel U-bolts.

  • AFCO 27300-1CR 7 Inch Extreme Chrome Coil-Over Spring, 300 Rate
    AFCO 27300-1CR 7 Inch Extreme Chrome Coil-Over Spring, 300 Rate
    (Part #106273001CR)
    x
                

    Whether you are building a purpose-built drag strip machine or a beautiful show car, Extreme Chrome coilover springs will provide the strength, durability and show stopping good looks you desire. 

    • Industry exclusive 360° polished wire
    • High quality REAL chrome finish
    • Looks great from any angle - not just on the outside edge
    • 2-5/8" inside diameter

    All Afcoils carry a lifetime warranty to remain within 2% of the original nominal free height. 

    Afcoil Spring Rate Guide (Link)

    Coil-Over Mounting Guide (Link)

  • AFCO 23250CR 10 Inch Extreme Chrome Coil-Over Spring, 250 Rate
    AFCO 23250CR 10 Inch Extreme Chrome Coil-Over Spring, 250 Rate
    (Part #10623250CR)
    x
                

    Whether you are building a purpose-built drag strip machine or a beautiful show car, Extreme Chrome coilover springs will provide the strength, durability and show stopping good looks you desire. This new mirror finish spring line has all the great looks of a chrome spring with no damaging side-effects associated with chemical plating.

    • Industry exclusive 360° polished wire
    • High quality REAL chrome finish
    • Looks great from any angle - not just on the outside edge
    • 2-5/8" inside diameter
    • 3-3/8" outside diameter

    All Afcoils carry a lifetime warranty to remain within 2% of the original nominal free height. 

    Afcoil Spring Rate Guide (Link)

    Coil-Over Mounting Guide (Link)

  • AFCO 23125CR 10 Inch Extreme Chrome Coil-Over Spring, 125 Rate
    AFCO 23125CR 10 Inch Extreme Chrome Coil-Over Spring, 125 Rate
    (Part #10623125CR)
    x
                

    Whether you are building a purpose-built drag strip machine or a beautiful show car, Extreme Chrome coilover springs will provide the strength, durability and show stopping good looks you desire. 

    • Industry exclusive 360° polished wire
    • High quality REAL chrome finish
    • Looks great from any angle - not just on the outside edge
    • 2-5/8" inside diameter

    All Afcoils carry a lifetime warranty to remain within 2% of the original nominal free height. 

    Afcoil Spring Rate Guide (Link)

    Coil-Over Mounting Guide (Link)

  • AFCO 22400CR 12 Inch Extreme Chrome Coil-Over Spring, 400 Rate
    AFCO 22400CR 12 Inch Extreme Chrome Coil-Over Spring, 400 Rate
    (Part #10622400CR)
    x
                

    Whether you are building a purpose-built drag strip machine or a beautiful show car, Extreme Chrome coilover springs will provide the strength, durability and show stopping good looks you desire. 

    • Industry exclusive 360° polished wire
    • High quality REAL chrome finish
    • Looks great from any angle - not just on the outside edge
    • 2-5/8" inside diameter

    All Afcoils carry a lifetime warranty to remain within 2% of the original nominal free height. 

    Afcoil Spring Rate Guide (Link)

    Coil-Over Mounting Guide (Link)

  • AFCO 28500-1CR 8 Inch Extreme Chrome Coil-Over Spring, 500 Rate
    AFCO 28500-1CR 8 Inch Extreme Chrome Coil-Over Spring, 500 Rate
    (Part #106285001CR)
    x
                

    Whether you are building a purpose-built drag strip machine or a beautiful show car, Extreme Chrome coilover springs will provide the strength, durability and show stopping good looks you desire. 

    • Industry exclusive 360° polished wire
    • High quality REAL chrome finish
    • Looks great from any angle - not just on the outside edge
    • 2-5/8" inside diameter

    All Afcoils carry a lifetime warranty to remain within 2% of the original nominal free height. 

    Afcoil Spring Rate Guide (Link)

    Coil-Over Mounting Guide (Link)

  • AFCO Yellow 2-5/8 I.D. Coil-Over Springs, 14 Inch
    AFCO Yellow 2-5/8 I.D. Coil-Over Springs, 14 Inch
    (Part #10624)
    x
                

    There's a lot riding on your springs-literally. Springs are your car's connection to the ground, and their performance is directly related to all other suspension components. Inconsistent, weak springs can cause a multitude of handling problems, and in some cases, dangerous situations. When it comes to choosing coil springs there are many alternatives, but if you want the best you can get, the choice is clear: choose Afcoils. 

    All Afcoils carry a lifetime warranty to remain within 2% of the original nominal free height. Choose your length and rate. 

    • Machine-ground on both ends to tolerances within 1 degree
    • Pressed to solid height and "pre-set" - eliminates potential for additional set
    • Optimized material thickness and coil spacing
    • Made of super-high tensile strength chrome silicon wire for long life and and a consistent rate
    • All springs are cold wound on the latest automated coiling equipment and heat treated twice during manufacturing to be able to withstand even the most abusive conditions
    • To further enhance durability, Afcoils are shot-peened and coated with a durable yellow finish

    Afcoil Spring Rate Guide (GIF)

  • Leaf Spring Liner with Lip, 2 Inch
    Leaf Spring Liner with Lip, 2 Inch
    (Part #91033037)
    x
                Equal partners in a smooth-riding leaf spring suspension are quality shocks and friction-free movement of the spring leafs. This special compound of poly-vinyl plastic has a very "slippery" surface which works as a permanent dry lubricant to eliminate interleaf friction and squeaking. It also features a small lip to keep it in place. 

    One 20 ft. roll does one cross spring. Liner is less than 1/16" thick.

  • AFCO 20128DC Low Profile Aluminum Threaded Spring Seat Only
    AFCO 20128DC Low Profile Aluminum Threaded Spring Seat Only
    (Part #10620128DC)
    x
                Low Profile Coil-over kit & replacement parts for AFCO Hot Rod & Pro Touring Series shocks. Clear coated billet aluminum.
            
  • AFCO 24125CR 14 Inch Extreme Chrome Coil Over Spring - 125 Rate
    AFCO 24125CR 14 Inch Extreme Chrome Coil Over Spring - 125 Rate
    (Part #10624125CR)
    x
                

    Whether you are building a purpose-built drag strip machine or a beautiful show car, Extreme Chrome coilover springs will provide the strength, durability and show stopping good looks you desire. 

    • Industry exclusive 360° polished wire
    • High quality REAL chrome finish
    • Looks great from any angle - not just on the outside edge
    • 2-5/8" inside diameter
    • Chrome Silicon Wire (not chrome vanadium) is used in every spring
    • Higher tensile strength, longer life
    • Cold-wound & heat-treated twice during manufacturing to withstand the most abusive conditions
    • Shot-peened

    All Afcoils carry a lifetime warranty to remain within 2% of the original nominal free height. 

    Afcoil Spring Rate Guide (Link)

    Coil-Over Mounting Guide (Link)

  • AFCO 23140CR 10 Inch Extreme Chrome Coil-Over Spring, 140 Rate
    AFCO 23140CR 10 Inch Extreme Chrome Coil-Over Spring, 140 Rate
    (Part #10623140CR)
    x
                

    Whether you are building a purpose-built drag strip machine or a beautiful show car, Extreme Chrome coilover springs will provide the strength, durability and show stopping good looks you desire. 

    • Industry exclusive 360° polished wire
    • High quality REAL chrome finish
    • Looks great from any angle - not just on the outside edge
    • 2-5/8" inside diameter

    All Afcoils carry a lifetime warranty to remain within 2% of the original nominal free height. 

    Afcoil Spring Rate Guide (Link)

    Coil-Over Mounting Guide (Link)

  • Axle Spring Perch, Chrome Forged Steel
    Axle Spring Perch, Chrome Forged Steel
    (Part #91033046)
    x
                Works with 1928-34 Ford front ends with 1-3/4" wide cross spring. Extra long for lower shock mounts. Includes nylock nut.

    Leaf Spring Measuring Guide (Link)

  • Mustang II Coil-Over Lower Control Arm Mount Spacers, Set/4
    Mustang II Coil-Over Lower Control Arm Mount Spacers, Set/4
    (Part #2551000)
    x
                

    Lower coil-over mount spacers for Mustang II IFS tubular lower control arms.

    Set includes four spacers, each with a .510" I.D., .750" O.D. and 1.375" length.

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