WOD Chromoly Four-Link Rod End Kit – 1-1/4"-12 Shank, 1" Bore
FL1141
The WOD 1-1/4" Chromoly Four-Link Rod End Kit is built for extreme-duty suspension systems where vehicle weight, tire size, horsepower, and shock loading demand maximum joint strength. Designed around massive 1-1/4"-12 chromoly rod ends with full 1" bores, this kit provides the joints, jam nuts, and high-angle spacers needed to build one complete front or rear four-link suspension system.
Each kit includes four left-hand-thread and four right-hand-thread rod ends, allowing suspension link length to be adjusted by rotating the link body without removing it from the vehicle. The included stainless steel high-angle spacers retain the full 1" mounting bolt size while narrowing the installed joint width to 2.375" and increasing available articulation.
This setup is intended for competition rock crawlers, Ultra4-style vehicles, heavy buggies, rock bouncers, industrial linkages, and other applications where reducing the mounting bolt size is not desired.
Includes:
- (8) 1-1/4"-12 Chromoly Rod Ends with 1" Bore
- (4) Left-Hand-Thread Rod Ends
- (4) Right-Hand-Thread Rod Ends
- (8) Matching Jam Nuts
- (16) Stainless Steel High-Angle Misalignment Spacers for 1" Bolts
Note: Suspension links, threaded bungs, mounting tabs, bolts, chassis brackets, and fabrication materials are sold separately.
Specifications
| Specification | Details |
|---|---|
| Manufacturer | Wide Open Design |
| Product Type | Extreme-Duty Four-Link Rod End Kit |
| Rod End Material | Chromoly Steel |
| Thread Size | 1-1/4"-12 |
| Rod End Bore | 1" |
| Installed Bolt Size | 1" |
| Installed Width with Spacers | 2.375" |
| Spacer Type | High-Angle Heim Joint Spacer |
| Spacer Material | Stainless Steel |
| Thread Direction | Left-Hand and Right-Hand |
| Left-Hand Rod Ends | 4 |
| Right-Hand Rod Ends | 4 |
| Total Rod Ends | 8 |
| Total Spacers | 16 |
| Radial Static Load Rating | 76,200 lbs |
| Application | Front or Rear Four-Link Suspension and Industrial Linkages |
Four-Link Rod End Kit Comparison
| Shank Size | Rod End Bore | Installed Bolt Size | Radial Static Load |
|---|---|---|---|
| 3/4" | 3/4" | 3/4" | 28,081 lbs |
| 7/8" | 3/4" | 3/4" | 43,486 lbs |
| 7/8" | 3/4" | 5/8" | 43,486 lbs |
| 1-1/4" | 1" | 3/4" | 76,200 lbs |
| 1-1/4" | 1" | 1" | 76,200 lbs |
Radial static load ratings describe the stated capacity of the rod end under a static radial test. They do not represent the safe working load of the complete suspension or linkage system. Final capacity depends on link material, thread engagement, mounting hardware, brackets, welds, geometry, fatigue, impact loading, and application.
Fitment
Universal Fitment
Common Applications:
- Front four-link suspension systems
- Rear four-link suspension systems
- Competition rock crawlers
- Rock bouncers
- Ultra4-style race vehicles
- Heavy custom buggies
- Large-tire off-road vehicles
- High-horsepower suspension builds
- 7075 aluminum suspension links
- Heavy-wall steel suspension links
- Industrial linkage systems
- Heavy equipment and fabrication applications
Fitment Notes:
- Designed for suspension links or industrial linkages using compatible 1-1/4"-12 threads.
- Rod ends use a full 1" bore and included spacers intended for 1" mounting bolts.
- Finished installed width with spacers is 2.375". Verify bracket inside width before ordering.
- Use one left-hand and one right-hand rod end on opposite ends of each link to allow adjustment without removing the link.
- Maintain sufficient thread engagement inside each threaded bung or suspension link.
- Tighten all jam nuts after final alignment.
- Cycle the complete suspension through compression, droop, steering movement, and articulation before final assembly.
- Verify that the rod end body, shank, and spacers do not contact the mounting tabs throughout travel.
- Mounting bolts, suspension links, threaded bungs, tabs, and brackets are not included.
- Industrial applications should be engineered for the expected directional loads, duty cycle, and safety factor.
FAQ
When should I use a 1-1/4" rod end with a full 1" bore?
This configuration is intended for heavy vehicles, large tires, long links, severe shock loading, and competition applications where both the rod end and mounting hardware must provide maximum strength. It is also well suited to industrial linkages subjected to high static or repeated loads.
How is this kit different from the 1" bore to 3/4" bolt version?
Both kits use the same size rod end and carry the same stated radial static load rating. This version retains a full 1" mounting bolt, while the alternate kit uses spacers that reduce the installed bolt size to 3/4".
Why retain a full 1" mounting bolt?
A full 1" mounting bolt provides more cross-sectional area than a 3/4" bolt and may offer greater shear capacity when properly matched with suitable brackets, spacers, and mounting structure. The complete connection must still be engineered as a system.
Why is the installed width narrower than the stepped-down version?
The 1" high-angle spacers do not need as much material to reduce the bore, allowing the assembled joint to measure 2.375" wide. The stepped-down 1"-to-3/4" spacer version measures 2.625" wide.
What do high-angle heim joint spacers do?
The spacers position the rod end between the mounting tabs, establish the finished bracket width, and provide clearance around the rod end body. This increases available angular movement before the joint contacts the brackets.
Why use left-hand and right-hand threads?
Opposite thread directions allow link length to be adjusted by rotating the suspension link. This simplifies setting axle position, wheelbase, caster, pinion angle, and suspension alignment.
What is radial static load?
Radial static load is measured with force applied perpendicular to the rod end bore during a controlled static test. It does not account for impact loading, fatigue, side loading, bending, loose hardware, or poor suspension geometry.
Does the 76,200 lb rating apply to the complete suspension link?
No. The complete connection is only as strong as its weakest component. The mounting bolt, spacers, tabs, welds, threaded bung, link material, and chassis structure must all be designed for the expected forces.
How much thread engagement should be maintained?
The rod end must retain substantial thread engagement inside the suspension link or threaded bung at the final adjustment length. Avoid operating the joint near the end of its threads, where bending stress and thread damage become more likely.
Can these rod ends be used with 7075 aluminum links?
Yes. They can be paired with properly engineered 7075 aluminum suspension links or heavy-wall steel links machined or fitted with compatible 1-1/4"-12 threads.
Can this kit be used for industrial applications?
Yes, provided the linkage is properly engineered. Industrial applications should account for load direction, operating frequency, fatigue, safety factor, lubrication, environmental exposure, and the strength of every surrounding component.
How do I prevent rod end binding?
Mock up the complete system and cycle it through its full range of movement. The rod end must retain adequate angular travel without contacting the mounting tabs or placing the shank in bending.
