Bore 0.7500 / 7/8-14 ThreadJMXR12-14 OS JMXL12-14 OS 0.7500 7/8-14 Chromoly Steel Offset Male Rod End (Metric)
XM JMX OS Product Overview
JMXR12-14 OS / JMXL12-14 OS features a 0.7500″ bore (B) and 2.000″ body diameter (D), with a 1.312″ precision-ground 52100 steel ball running in a reinforced nylon/PTFE race. Overall body length (AM) is 4.49″, thread engagement depth (D) is 3.05″. Width (W) is 0.875″ and body thickness (T) is 0.765″. Offset dimension (OS) is 0.87″.
The offset shank design displaces the bore center 0.87″ from the thread centerline, eliminating tie rod and differential cover interference without requiring suspension geometry changes. With a 7/8-14 UNF 3A external thread and ±12° misalignment angle, this rod end suits heavy-duty steering, large suspension, and off-road applications where differential cover clearance is critical. The 4130 chromoly body is heat treated and hard chrome plated; the reinforced nylon/PTFE race is self-lubricating and self-sealing.
Available in right-hand (JMXR12-14 OS) and left-hand (JMXL12-14 OS) thread configurations. The OS (offset shank) design is a direct solution for clearance issues encountered in lifted trucks, off-road builds, and high-clearance suspension systems where standard straight-shank rod ends interfere with adjacent drivetrain components. Body is 4130 chromoly steel, heat treated and hard chrome plated.
XM JMX OS Series — Full Size Range
All available sizes in the XM JMX OS series. Can’t find your size? Contact us for custom dimensions.
| RIGHT HAND PART NO. | LEFT HAND PART NO. | B DIA. +.0025 -.0005 | D DIA. +.005 -.005 | W WIDTH +.005 -.005 | T WIDTH +.005 -.005 | BALL DIA. REF. | AM LENGTH +.015 -.015 | N THREAD UNF 3A | D LENGTH +0.62 -0.31 | a° MIS. ANGLE REF. | OS off set LENGTH. |
|---|---|---|---|---|---|---|---|---|---|---|---|
| XMR10 OS | XML10 OS | 0.6250 | 1.750 | 0.750 | 0.562 | 1.125 | 3.00 | 5/8-18 | 1.78 | 12 | 0.82 |
| XMR12 OS | XML12 OS | 0.7500 | 1.750 | 0.875 | 0.687 | 1.312 | 3.00 | 3/4-16 | 1.80 | 14 | 0.87 |
| XMR14 OS | XML14 OS | 0.8750 | 2.000 | 0.875 | 0.765 | 1.375 | 4.49 | 7/8-14 | 3.05 | 7 | 0.87 |
| XMR12-14 OS | XML12-14 OS | 0.7500 | 2.000 | 0.875 | 0.765 | 1.312 | 4.49 | 7/8-14 | 3.05 | 12 | 0.87 |
| JMXR14 OS | JMXL14 OS | 0.8750 | 2.000 | 0.875 | 0.765 | 1.375 | 4.49 | 7/8-14 | 3.05 | 7 | 0.87 |
| JMXR12-14 OS | JMXL12-14 OS | 0.7500 | 2.000 | 0.875 | 0.765 | 1.312 | 4.49 | 7/8-14 | 3.05 | 12 | 0.87 |
Every Unit Inspected Before Shipment
Raw Material Inspection
Material certifications verified. Composition confirmed by spectrometer before machining begins.
Thread Gauge Inspection
100% go/no-go gauge check on all threaded sections. Zero tolerance on dimensional non-conformance.
Load Capacity Test
Static and dynamic load tests run on representative samples from each production batch.
Dimensional Measurement
CMM verification of critical dimensions — ball diameter, bore, thread pitch, and body length.
Surface Inspection
Visual and tactile inspection for burrs, scratches, surface cracks, and plating defects.
Articulation Test
Misalignment angle and torque measured to confirm liner performance meets specification.
Heat Treatment Verify
Hardness tests confirm proper heat treatment on chromoly steel bodies and bearing balls.
Batch Documentation
Full traceability from raw material heat number to finished part. COC and inspection reports available.
Where XM JMX OS Rod Ends Are Used
More from the XM JMX OS Series
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XM JMX OS Frequently Asked Questions
What is the purpose of the XM-OS and JMX-OS offset head design?
The offset head design is intended to eliminate tie rod and differential cover clearance issues by moving the rod end head position away from interference points in the linkage layout.
What materials are used in the XM-JMX-OS series?
The series uses a hard-chrome-plated 52100 bearing steel ball, an injection-molded reinforced nylon race with PTFE, and a 4130 chromoly steel body that is heat treated and hard chrome plated.
What is the difference between XM-OS and JMX-OS parts?
Both are offset chromoly rod ends, but they correspond to different body families and part number groupings within the series. The offset concept is the same, while the exact dimensions and fitment differ by part number.
Where are XM-JMX-OS rod ends commonly used?
They are commonly used in steering systems, off-road front-end links, custom suspension geometry, and clearance-critical fabricated linkage assemblies where a standard rod end would interfere with nearby components.
Are these rod ends self-lubricating?
Yes. The series uses an injection-molded reinforced nylon race with PTFE, providing a self-lubricating construction suited to repeated articulation.
Why use an offset rod end instead of a standard rod end?
An offset rod end is useful when you need to preserve articulation and thread engagement but move the head centerline to clear housings, covers, brackets, or nearby steering components.