Bill Smith
Founder, 1929-2014
Speedy Bill
Since 1952
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DECO Radius Rod Building Tool

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Used for determining the length needed for tie rods, drag links, radius rods, etc. Works in 1/2" 5/8" and 3/4" rod ends.
DECO Radius Rod Building Tool

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Q & A

What's in the Box

This radius rod building tool is a simple tool for setting the length of tie rods and radius rods. Fits 1/2", 5/8" and 3/4" rod ends.  32" long.

You may also be interested in:

Radius Rod Only Axle Bracket
(Part #91635012)
                        For radius rod, no spring. 3/8" thick, 5" eye to eye 

Weld-on brackets attach spring or radius rods to 2" O.D. axles.


Curtis-Style Radius Rods, 36 Inch, Plain Steel
(Part #91645114)

Speedway Curtis-style radius rods have a classic shape that's more distinctive than most hairpin-style designs. At 36" in length, these are ideal for non-fendered street rods. The axle ends are tapped 5/8" NF RH threads, while the chassis ends have female 11/16" RH threads to accept Ford tie rod ends for the perfect nostalgic touch.

NOT for use with rear suspension.

Tru-Lite Titanium One Nut Style Radius Rod Kit
(Part #9401057)
                        Titanium. 24 pieces. 
Classic 32 Inch Rear Radius Rods, Plain Steel
(Part #91645110)

Steel radius rods for rear suspensions. Made from DOM steel tubing and includes "S" stiffener (requires welding) which gives the arm greater strength to withstand hard acceleration. Chrome and stainless units have the stiffener welded in place. All holes are tapped 5/8" RH fine thread.

Use 5-3/4" bracket for clevis mount center bolt spacing.

Split Wishbone Style Radius Rods
(Part #91645127)

It doesn't get much more traditional than running a set of split wishbones. These split bones are all new with forged front yokes just like Henry built them and fit a 2-1/4" axle boss. 

  • 40-3/4" from the front perch bolt centerline to the end of the 11/16"-18 threaded rear bung
  • 1/2"-20 threaded roid to allow a spring behind perch, shock mount or other hardware to be used
  • Material thickness is 12 GA (0.1046")
  • Fully boxed