Mr. Roadster spindles are a one piece, drop forged design constructed of high strength 4140 steel, which makes them superior to original components. These spindles are modeled after the 1937-41 round-back design and use 1937-41 Ford king pins.

Can be used with period correct drum brakes or modern Speedway Motors disc brakes.

Save when you purchase a complete kit!

Kits include:

Spindle Identification Guide 

1937-41 Kingpin Install Instructions (PDF)

1942-48 Kingpin Install Instructions (PDF)

Tube axles are constructed using 1018 steel ends with 2" x .250 wall, 1018 seamless tubing and are set up with 1-1/4 degrees positive camber.

Magnum's dropped I-beam axles feature a one-piece design of annealed ductile iron. Available for 1928-48 Ford in plain or chrome.

For a 3" dropped tube axle alternative (in plain, chrome or stainless), see Mr. Roadster® axles below.

Caster Angle Illustration

Leaf Spring Measuring Guide

Tube and I-Beam Axle Chart Application

These Mr.Roadster deluxe king pins are a great improvement over stock-style king pins. They replace the original brass king pin bushings with precision needle bearings that provide superior strength, better lubrication and easier steering.

They're simple to install and are an easy, cost-effective way to upgrade your 1937-1948 Ford or 1949-1954 Chevy suspension, as well as tubular or I-beam street rod axles using 1949-1954 Chevy spindles.

Use with 91632100 or 91632104 spindles.

910-32116 Instructions (pdf)

Spindle ID Application Chart

These Mr.Roadster deluxe king pins are a great improvement over stock-style king pins. They replace the original brass king pin bushings with precision needle bearings that provide superior strength, better lubrication and easier steering.

They're simple to install and are an easy, cost-effective way to upgrade your 1937-1948 Ford or 1949-1954 Chevy suspension, as well as tubular or I-beam street rod axles using 1949-1954 Chevy spindles.

Use with 91632100 or 91632104 spindles.

910-32117 Instructions (pdf)

Spindle ID Application Chart

NOTE: Upper steering arms allow the attachment of a drag link to the LH (driver's side) spindle.
The arms attach with bolts through the upper 2 backing-plate-mounting holes on spindle.

 Steering Arm Ends Guide

 Parallel Steering Set-Up Guide

These kingpin kits come complete with bushings, bearings and locks. All standard kingpin bushings must be reamed or honed to exact size after installation in your spindles. 

Spindle Identification Guide

910-32121 Instructions (pdf)

910-32122 Instructions (pdf)

Extra Long Arms are 7-3/4" and they permit a tighter left turn when using large diameter front tires or front wheels with a deep reverse. Slows steering rate for greater control.

NOTE: Upper steering arms allow the attachment of a drag link to the LH (driver's side) spindle.
The arms attach with bolts through the upper 2 backing-plate-mounting holes on spindle.

 Steering Arm Ends Guide

 Parallel Steering Set-Up Guide

• 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"

Quality, tempered steel springs measure 31-1/4" long eye-to-eye and 1-3/4" wide. This is a six-leaf spring with a 4-3/4" arch measured when sitting on a flat surface to bottom of spring. Standard eye springs in a chrome finish.

These springs also now feature an anti-friction puck.

Leaf Spring Measuring Guide

Quality tempered steel spring measures 31-1/4" long eye-to-eye and 1-3/4" wide. This is a six-leaf spring has a 4-3/4" arch (measured when sitting on a flat surface to bottom of spring). Standard eye springs in a plain finish.

These springs also now feature an anti-friction puck.

Leaf Spring Measuring Guide

Quality, tempered steel springs measure 31-1/4" long eye-to-eye and 1-3/4" wide. For a lower car, reverse eye springs are offered in chrome.

These springs also now feature an anti-friction puck.

Leaf Spring Measuring Guide

Quality, tempered steel springs measure 31-1/4" long eye-to-eye and 1-3/4" wide. For a lower car, reverse eye springs are offered in a plain finish.

These springs also now feature an anti-friction puck.

Leaf Spring Measuring Guide

Standard height. This front spring perch kit welds to a 3" diameter crossmember and uses a 1-3/4" leaf spring. Plain U-bolts included.

Note:  The"Low Ride Height" perch kit has an additional 1-1/2" of drop over the "Standard Height" perch kit.

If you want to upgrade your solid axle front end without the hassle of welding and grinding, these mono-leaf springs may be your answer. They are simple to change out and you can adjust ride height by adding spacers above or below the spring.

Varying thicknesses along length and width of spring provide strength and flexibility for your vehicle's suspension.

Measured center to center of eyes. Reverse eye. 1-3/4" Wide. Unpainted steel construction.

Fit 1937-41 Ford cars with stock or modified wishbone or Speedway 4-bar kits. Axles measure 47-3⁄4" between king pin centers and 38-1⁄2" between spring perch boss centers.

1942-48 I-Beam axle is 50" between kingpins, 40-5⁄8" wide between perch bolt centers and works with a stock length spring.

Both axles have a plain finish with 4" drop.

Caster Angle Illustration

 Leaf Spring Measuring Guide

Speedway has produced these new Mr. Roadster Forged Steel reproduction car spindles. They have many features not available with GMs' original design! These spindles are the choice of professional builders because of their clean look, strength and ease of installation.

Kits include:

Spindle Identification Guide

Designed for T buckets. 26" eye to eye. 29" spring pivot center to center. 1-3⁄4" wide, 4 leaf. These springs also now feature an anti-friction puck.

Leaf Spring Measuring Guide

This special compound of poly-vinyl plastic has a very "slippery" surface. This works as a permanent dry lubricant that eliminates interleaf friction and squeaking.

Comes as a flat strip so you can trim it to fit any width spring, (front or rear) up to 3-3/4" wide.

Front short leaf springs designed for T Buckets. 26" eye to eye. 1-3/4" wide, four leaf.

Leaf Spring Measuring Guide

Complete with bushings, bearings, and locks. 

910-32122 Instructions (pdf) 

These kingpin kits come complete with bushings, bearings and locks. All standard kingpin bushings must be reamed or honed to exact size after installation in your spindles.

Note: These kingpins will fit stock 1939-54 Chevy passenger car spindles as well as our reproduction 1949-54 Chevy spindles (91632100).

910-32123 Instructions (PDF)

These Mr.Roadster deluxe king pins are a great improvement over stock-style king pins. They replace the original brass king pin bushings with precision needle bearings that provide superior strength, better lubrication and easier steering.

They're simple to install and are an easy, cost-effective way to upgrade your 1937-1948 Ford or 1949-1954 Chevy suspension, as well as tubular or I-beam street rod axles using 1949-1954 Chevy spindles.  Includes bearing installation tool.

Use with 91632100 or 91632104 spindles.

910-32115 Instructions (pdf)

Spindle ID Application Chart

Width on centerline is 26-1/2" edge to edge.

Replaces a cracked original or use it to start your reproduction frame off right. Made of heavy, 7-gauge steel with clearance for 1-3/4" cross spring. Welds to frame boxing plates of original or repro chassis.

Shock mounting stud is approximately 3-5/8" in overall length. The part where the shock rides, is 5/8" O.D. and approximately 1-1/4" wide and the threads at the shock end are 7/16"-20, about 7/8" long. The threads at the bracket end are 1/2"-20, about 1-1/8" long.

Studs sold individually.

This special compound of poly-vinyl plastic has a very "slippery" surface. This works as a permanent dry lubricant that eliminates interleaf friction and squeaking. It also features a small lip to keep it in place.

One roll does one cross spring. 20 ft. roll.

Hoop Style Steering Arm features boss for tapered tie rod end, can be drilled for 5/8" rod end.  Available for 1937-48 Ford car spindle and 1949-54 Chevy car spindle applications.

Steering Arm End Chart

1-3/4" wide. 1/4" thick.

When hot rodders heated and dropped Ford axles back in the day, they often filled the axle ends for extra strength. Super Bell now offers the filled look on its new 4" dropped I-beam axles.

Made from high-strength ductile iron, these are cast with the quality Super Bell has put into all its axles for more than thirty years.

Use with 1937-48 Ford or 1949-54 Chevy spindles. 3" drop. The perch bolt hole center spacing is 37" and the king pin center spacing is 48". Available in plain, chrome or stainless.

 Leaf Spring Measuring Guide

Caster Angle Illustration

Replacements for Mr. Roadster part numbers 91033323, 91033324 and 91033325.

When hot rodders heated and dropped Ford axles back in the day, they often filled the axle ends for extra strength. Super Bell now offers the filled look on its new 4" dropped I-beam axles.

Made from high-strength ductile iron, these are cast with the quality Super Bell has put into all its axles for more than thirty years.

The ends of the spring leaves of a Super Glide™ spring have a unique teflon button. This button works as a dry lubricant and stops leaf-to-leaf interference. This freedom from friction lets the spring move more easily, thereby giving a softer, quieter ride.

Leaf Spring Measuring Guide

Posies Super Slide Spring Chart Application

Rear shock mounting bolt has a 1/2" stud and a 5/8" shank.