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America's Oldest Speed Shop ® 800.979.0122 Lincoln, NE
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800.979.0122

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Since 1952
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Split Wishbone Style Radius Rods

SAME DAY SHIPPING! Order within the next 16 hours 31 minutes and receive same day shipping

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Specs
Material Type:
Steel
Sold in Quantity:
Pair
Finish:
Natural
Thread Pitch:
1/2"-20
Thread Pitch (2):
11/16"-18
Garage Sale:
No
Overall Length:
42.00
Center to Center:
40.75
Material Thickness:
.1046
Notes
Doesn’t have original spring perch ahead of the axle. Replacement for 36" Curtis style rods and is 40.75" from axle centerline to back edge. Has 1/2"-20 threaded rod 3" behind centerline.
Split Wishbone Style Radius Rods

Click image to enlarge

Please NOTE the following about this product:

  • This item is sold as a pair.

Details

Reviews

Q & A

What's in the Box

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

Notes

  1. These radius rods do not have the original spring perch that goes ahead of the axle. Instead, they have a threaded roid behind the axle that will accept our 916-33002 spring pivot for a spring-behind application. This roid is approx. 3" behind the axle centerline.
  2. Radius rod accepts our 910-02909 tie rod end or 175-0128 heim (11/16"-18 thread).
  3. Direct replacements for our 36" Curtis-style radius rods 916-45114. 

Customer Reviews

Rated 4.3 out of 5 by 4 reviewers.
RATING BREAKDOWN
4 reviews
5 Stars
1
4 Stars
3
3 Stars
0
2 Stars
0
1 Star
0
RECOMMEND THIS PRODUCT:

CaliLabRatsGarage
Bakersfield, Ca

Product bolted right up and fits great

December 05, 2013
These radius rods arrived fast and bolted right up to my 32 Chevy Sedan front axle. Look great and are well built!!
Yes, I recommend this product.
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Dirty Dave
Verified Purchaser
Southern Maryland

Happy with these!

December 02, 2011
I cant say they are "perfect" but they are better than I expected from previous reviews. I am completely happy with the welds.
Yes, I recommend this product.
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Red
Sacramento, CA

Nice, quality

December 07, 2010
I like these, I have always split my own using speedways bung kit, but these are great, they have a good look and seem to be pretty strong. They even have a hole through the cast portion in the front that allows you to mount your spring behind known as "rolling bones" which gives you a lowered stance. The welds aren't the best looking but are functional. Not that the originals looked better.
Pros:
  • Good product
  • Has holes to mount spring
  • Stout
Yes, I recommend this product.
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Bent wrencher
Rockvale,TN

Cool new item.

February 12, 2010
Could use a little more weld clean up.
Yes, I recommend this product.
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Page 1 of 1

Product Q&A

5 questions : 5 answers

1 answers

will these fit my 1931 ford model a ??? i've installed a 48 flathead ford engine in my model a frame and the stock wishbones are in the way my exhaust, i've also installed a vega steering box !!!!!! any info that you can share with me would be really helpfull thank you for your time

quest1946
Kenosha, WI, USA
April 04, 2013

will these fit my 1931 ford model a ??? i've installed a 48 flathead ford engine in my model a frame and the stock wishbones are in the way my exhaust, i've also installed a vega steering box !!!!!! any info that you can share with me would be really helpfull thank you for your time

Answers

April 04, 2013
Jason
Wishbone kit number 91645127 could be used on a Model A axle but your axle boss may only be 2” in which case we offer the spacers number 91635003. To complete the installation you would need the tie rod ends such as part number 91002909 or heim ends number 1750128 and the correct jam nuts. For the frame mounts you would need part number 91635052 as one example which are a weld on and also offered is a bolt on option under number 91635015.
1 answers

I was looking not for the overall length measurement but the measurement to the center of hole for the spring perch right behind the fork at the front

JessKii
April 03, 2013

I was looking not for the overall length measurement but the measurement to the center of hole for the spring perch right behind the fork at the front

Answers

April 03, 2013
Jason
From end of radius rod to center of perch hole is 38" and from center of perch hole to end of fork is 3"
1 answers

I have a tube axle,spring over 4bar front susp. & would like to convert to split bones. Will these work with the parts I have or do I need anew axle etc. Steering is a vega cross steer.

Ron
Hobe Sound,Fl.
October 12, 2011

I have a tube axle,spring over 4bar front susp. & would like to convert to split bones. Will these work with the parts I have or do I need anew axle etc. Steering is a vega cross steer.

Answers

October 13, 2011
John
Part # 91645127 The wishbones attach to an axle that utilizes a perch bolt for attachment of the four bar batwings and also where the perch bolt for spring over has the mount for the shackles. The wishbone attach over an axle boss of 2 ¼” or with a spacer kit a 2” boss. If your axle has welded on brackets for the four bar and spring pivots then the wishbones will NOT be a direct install. Also the mount on your frame rail will need to be changed, moved further rearward, and installed in a location to achieve the proper caster in the front axle.
1 answers

Will these work on a 42 threw 48 ford axel beam/out of 2 door sedan tudor

chevtrike
cusick wash
July 11, 2011

Will these work on a 42 threw 48 ford axel beam/out of 2 door sedan tudor

Answers

July 14, 2011
John
These wishbones work on the early Ford axles and aftermarket axles with perch bolt axle boss’ up to 2 ¼” tall. If running an axle with a 2” boss we offer a spacer under part number 91635003. For axles with more than a 2 ¼” boss you will need to machine down the axle boss for necessary clearance.
1 answers

Do these have a 7 degree angle built into the forging? Brian Aspinall

baspinall
PA
March 30, 2011

Do these have a 7 degree angle built into the forging? Brian Aspinall

Answers

April 01, 2011
Thomas
Mounting the wishbone extended center line at 0 degrees will result in 7 degrees positive caster at the axle.
Page 1 of 1

You may also be interested in:

Radius Rod/Four-Bar Frame Mounting Brackets, 1/2 Inch Hole
(Part #91635050)
                        Weld these brackets to the underside of your low-ridin' 'T' thru 1934 Ford frame rails for a simple, strong place to attach 4-bars or radius rods. Plain steel. 4-3/8 Inch Tall

NOTE: For use with spherical rod ends.
Radius Rod Frame Mounting Bracket, Tie Rod
(Part #91635052)
                        

Weld these brackets to the underside of your low-ridin Model T thru 1934 Ford frame rails for a simple, strong place to attach radius rods using 11/16” Ford style tie rod ends. Plain steel.

  • 4-3/8 Inch Tall
  • 7 Degree Taper 

Item Details

For Ford Tie Rod Ends
Stainless Steel Tie Rod End, 11/16-18 RH
(Part #91002929)
                        These tie rod ends are just like our standard Ford tie rod ends except they are made of beautifully polished stainless steel. They have 11/16"-18 thread and include hardware. Make sure to use anti-seize on the threads. 
                    
Split Wishbone Style Radius Rods w/ Holes
(Part #91645128)
                        

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")
  • Includes lightening holes (holes not boxed)
Forged I-Beam Split Wishbone Front End Kit
(Part #91639516)
                        

Split bones front end kit for '37-'48 Ford style spindles. Kit is based on our 910-35140.

Kit Includes:

  • Wishbone style radius rods
  • Radius rod frame mounts
  • 29” leaf spring
  • Shackles
  • Perches
  • Lower shock mounts
  • Hardware
Outer Tie Rod End, 11/16-18 RH
(Part #91002909)
                        Replace those sloppy worn out tie rods with our new replacements. Original equipment on 1948-1964 Ford half-ton pickups, but these tie rod ends can be used for multiple applications other than Ford trucks. Not for use with flat steering arms. Use only with Ford type steering arms with a tapered hole. Not normally used with Chevy spindles.
                    
Standard Steel RH Heim Joint Rod Ends, 11/16-18 Shank, 5/8 Hole
(Part #1750128)
                        Every once in a while someone wants to use a rod end in place of a 11/16" tie rod. We listened to the requests and built them with 11/16"-18 RH or LH thread and accept a 5/8" thru-bolt.  Center of hole to end of threads 2-5/8"  thead length is 1-1/2".
                    
Plain 5 Degree Spring Pivot
(Part #91633002)
                        

Use with 1-3/4" nylon shackle kit.

Sold each.

Leaf Spring Measuring Guide (Link)