Ford Dana 60 Ball Joint Axle Double Shear Project Arm Kit

***Our knuckle machining shop only operates Monday through Thursday. No knuckle machining happens on Friday, Saturday or Sunday. If your knuckle arrives to us on Thursday afternoon, it will not be ready to ship until Wednesday of the following week, depending on current lead time***


Our project arms give the ability to create double sheer steering systems or other custom steering setups for 92-97 OBS Dana 60 or 99-04 Ford Super Duty Dana 60/50 axles. The tie rod location varied so there is no one size fits all double shear arm. These project arms allow you to line bore through the knuckle's tie rod hole to create a double sheer steering setup to capture a heim joint between the arm and the factory tie rod hole. This is most commonly used for hydraulic steering systems using a double ended ram. There is enough room in the arm to add a drag link for a mechanical steering connection as well.

It is possible to line bore the knuckles and capture the lower tie rod eyes. The problem is, this is very difficult. Here is why, the factory tie rod arms are too short, this was so they fit inside a 16" wheel.  They are also further out from knuckle center than we can move the upper arm out and clear a wheel, even 20" wheels. You have to bore at an outward angle towards the wheel hub, and inward towards the axle shaft at a compounded 15* angle.

Our customer Chris (picture shown installed)  who uses his ZJ for obstacle course racing was capable of creating a double shear captured bolt system in his driveway with a 20v Dewalt hand drill and Harbor Freight drill set. Chris is not an engineer or machinist. He has basic mechanical skills. If you possess basic mechanical skills, you too should be able to replicate this conversion.


  • 2 arms
  • 2  knuckle machining services
  • 10 studs, nuts, and conical washers.

What we do:

Sky's machines your ball joint knuckles for our five stud keyed steering arms, using our 9/16ths Dana 44 studs and conical washers. No weak four 1/2" bolt system here! 

Note: Please remove your ball joints and spindle studs...There will be a $35 fee ea. for knuckles sent with ball joints and spindle studs for removal in our air press... This will destroy them both, and we will scrap them. Expect a bare knuckle returned. Knuckle needs to be clean and not molested! We do not have knuckles for exchange, we machine your knuckle and send it back to you.


1. Order the this kit on our web site.

2. Package up your passenger knuckle without balljoints or spindle studs.


3. Clearly mark the box with your order number, full name and phone number.

4. Mail your knuckle to:

Sky Manufacturing
3580 Marcola Rd.
Springfield, OR 97477

5. We will machine it, pack the rest of your kit, and mail it back to you! If you order this kit with other parts, we will not ship the additional parts without your knuckle due to shipping cost factored as a complete order and inventory issues.

Steering Arm Info:
Our steering arms are CNC machined out of ASTM A572 Grade 50 steel. Grade 50 is a very strong low alloy steel that fulfills our exceptionally high strength requirements, and is particularly strong for applications in which it is riveted or bolted. ASTM A572 Grade 50 is considered a "workhorse" grade and is widely used in many applications. Steel mills produce channel and heavy beams with Grade 50. It is commonly used in structural applications, heavy construction equipment, building structures, heavy duty anchoring systems, boom sections, structural steel shapes, and applications that require high strength per weight ratio.
*Tensile strength: 65,000 psi
*Yield strength: 50,000 psi

Customer Reviews

Based on 2 reviews Write a review