4130 Chromoly & Mild Steel Clevises — Weld-In, Bolt-On & Threaded for Race Car Chassis Fabrication

There is so much riding on these suspension and linkage fabrication parts — it’s always worth using the best available. Pro-Werks clevises are precision CNC-machined from 4130N chromoly steel with ultra-fine finishes and tight tolerances that assure a proper fit in tubing during the welding process. The Chassis Shop carries the full lineup — weld-in slot clevises, threaded clevises, bolt-on clevis link brackets, rod end clevises, quick pins, and uni-ball weld cups — individually or in convenient bags of 20 for volume users.

Chromoly Weld-In Slot Clevises — The Better Slot Clevis

Shop Pro-Werks Chromoly Weld-In Slot Clevises

Pro-Werks weld-in slot clevises are precision CNC-machined from 4130 chromoly for extra strength. Note the radius in the base of the slot and on the flats — this extra detail eliminates sharp inside corners that create stress risers and crack initiation points. Available to fit tubing from 1/2" to 1-1/8" OD in a variety of wall thicknesses, with multiple slot width and hole size combinations. Each clevis is matched to a specific Quick Pin for fast, tool-free removal.

• Weld-In Slot Clevises — 1/2"–1-1/8" OD Tube — Pro-Werks Chromoly Weld-In Slot Clevis, 4130N — wing struts, wheelie bars, seat mounts, radiator supports & linkages, Made in USA

Popular uses include: Linkages, Wheelie Bars, Seat Mounts, Wing Struts, Radiator Supports

Typical Installation — Slot Clevis in a Chassis Linkage

Threaded Slot Clevises — Fine Thread Shank for In-Line Adjustment

When your installation requires length adjustment without removing the clevis, the Pro-Werks Threaded Slot Clevis is the answer. The fine thread shank allows for precise in-line adjustment — ideal for suspension links, wing struts, and any application where tuning the geometry matters.

• Threaded Shank, Fine Thread, Adjustable — Pro-Werks Threaded Slot Clevis — fine thread shank for in-line length adjustment, Made in USA

Bolt-On Clevis Link Brackets — No Welding Required

The Pro-Werks Mild Steel Clevis Link Bracket is a popular bolt-on method to create a linkage rod attachment point — and may also be welded in place when needed. Die-stamped and tumbled to remove sharp edges. So affordably priced you’ll want to keep an assortment in your workshop for future projects. Available in two mounting hole size combinations:

• 1/2" Side Mounting Hole, 3/16" Thick, 1/2" Clevis Holes — Pro-Werks Mild Steel Clevis Link Bracket — bolt-on or weld-on, die-stamped mild steel, quantity discounts available
• 5/8" Side Mounting Hole, 3/16" Thick, 1/2" Clevis Holes — Pro-Werks Mild Steel Clevis Link Bracket — bolt-on or weld-on, die-stamped mild steel, quantity discounts available

Rod End Clevises — Weld-In, Mild Steel & Chromoly

When attaching a rod end to a tube end is required, Pro-Werks formed rod end clevises provide a simple, strong fabrication solution. Mild steel can be welded to both mild steel and chromoly with the proper filler rod. Always select chromoly for applications requiring ultimate strength.

• Mild Steel Rod End Clevis — C73-177, 3/8" Hole, 1-1/8" Height, .500" Inside Width, 7/8" Long, Fits Up to 3/4" Tube — Pro-Werks Mild Steel Rod End Clevis, 4130N — weld-in, fits up to 3/4" diameter tube
• Chromoly Radius Rod Tab / Clevis — 3/8" Hole, 3/4" Height, 2-3/4" Long, .500" Inside Width, Fits 1-1/4" & Larger Tube — Pro-Werks Chromoly Radius Rod Weld Tab, 4130N — weld-in, fits 1-1/4" diameter and larger tube

Quick Pins — Zinc Plated Steel, Tool-Free Removal, Sold in Pairs

Zinc-plated steel quick pins allow for fast, easy removal and installation of sidebars, radiator mounts, cross members, and wheelie bars. Each pin is matched to specific slot clevis part numbers — select the correct pin for your clevis.

• C73-350-2 — Fits C73-962 slot clevis
• C73-355-2 — Fits C73-964 and C73-965 slot clevises
• C73-360-2 — Fits C73-966, C73-970, C73-976, and C73-978 slot clevises
• C73-361-2 — Fits C73-987 slot clevis

Pro-Werks Zinc Plated Steel Quick Pin — sold in packages of 2, zinc-plated for corrosion resistance

Uni-Ball Weld Cups — 4130N Chromoly, for Rod End Inserts

Pro-Werks Uni-Ball weld cups are precision CNC-machined from 4130N chromoly and accept most popular spherical bearing inserts (FK Bearing and Aurora brand). The perfect solution for installing spherical bearings in applications that don’t require the adjustment of a threaded shank rod end. Snap ring included. Designed for a light press fit. Tech Tip: Install a removable, snug-fitting heat sink into the bore during finish welding to prevent distortion.

• C73-440 — 13/16" Uni-Ball Weld Cup — fits COM6 / COM6-T rod end inserts
• C73-441 — 1" Uni-Ball Weld Cup — fits COM8 / COM8-T rod end inserts
• C73-442 — 1-3/16" Uni-Ball Weld Cup — fits COM10 / COM10-T rod end inserts
• C73-443 — 1-7/16" Uni-Ball Weld Cup — fits COM12 / COM12-T rod end inserts

Pro-Werks Chromoly Uni-Ball Weld Cup for Rod End Insert, 4130N — CNC-machined 4130N, snap ring included, compatible with FK Bearing & Aurora inserts

Fork Clevis Cable End — For Push-Pull Cable Installations

When you need a fork clevis type cable end for your push-pull cable installation, Pro-Werks has you covered. Mild steel construction, plated for corrosion resistance. Compatible with Silver Jacket Cables and most 33C series Teleflex Morse type push-pull control cables.

• 10-32 NF Threads, 3/16" Slot, 3/16" Pin, Cotter Pin Included  — Pro-Werks Fork Clevis Cable End — plated mild steel, compatible with Silver Jacket & Teleflex Morse cables

Frequently Asked Questions

Q: Is Chromoly steel stronger than Mild steel?

A: Yes — chromoly steel has considerably higher tensile strength than mild steel and is the preferred choice for applications requiring maximum strength. Always consider selecting chromoly materials for suspension, linkage, and safety-critical applications.

Note: Welding should always be performed by a qualified welder.

Complete Your Linkage & Chassis Build

Clevises work hand-in-hand with these related components from The Chassis Shop:

• Weld Tabs & Brackets — over 100 mild steel and chromoly chassis tabs that clevises mount to in suspension and linkage applications
• Tubing & Custom Bends — 4130N chromoly tubing that clevises can be welded into for control arms, linkages, and wing struts
• Rod Ends — FK Bearing and Aurora heim joints for adjustable linkage connections
• Tube Adapters — CNC-machined chromoly weld-in threaded ends used alongside clevises in the same linkage assemblies
• Specialty Nuts & Washers — clevis pins, cotter pins, and jam nuts to complete installation

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Proudly Made in the USA.