Multiquip SW4B 4 Leaf Double Eye Spring

The Multiquip SW4B 4 Leaf Double Eye Spring is a genuine OEM suspension component designed for Multiquip trailer models including TRLR50WE, TRLR50XF, TRLR25US, and TRLR50XFE. Sourced directly from Multiquip, this spring delivers the correct load rating and geometry needed to keep your trailer tracking and riding as intended. It is a direct-fit replacement that mounts to the existing axle hardware without modification to the suspension assembly. Whether you're returning a trailer to service after a failure or completing a scheduled suspension overhaul, the SW4B ensures the correct part goes back on the axle every time.

Key Features

• Genuine OEM Leaf Pack Construction — Multi-leaf stack is manufactured to the original load and deflection spec, maintaining the suspension geometry Multiquip engineered into these trailers.
• Double Eye End Mounts — Both ends feature formed eyes that bolt directly to OEM shackles and hanger brackets, ensuring a clean, secure connection to the existing suspension hardware.
• Broad Trailer Compatibility — Fits TRLR50WE, TRLR50XF, TRLR50XFE, TRLR25US, and Multiquip single-axle trailer configurations, making it a practical stock item for fleets running multiple trailer models.
• Consistent Load Support — A correctly rated leaf spring maintains axle alignment and even tire contact with the road surface; a worn or broken spring causes axle wander, uneven tire wear, and instability under load.
• Towing Safety Compliance — Suspension integrity is a critical safety factor in towed equipment; replacing a failed or cracked spring with a genuine OEM unit restores the trailer's designed tow rating and road behavior.

A leaf spring supports the weight of the trailer and its load while absorbing road shock between the axle and the frame. The double eye design allows the spring to pivot at both mounting points, giving the suspension the range of motion it needs to flex over uneven terrain without binding. When a leaf cracks, separates, or loses its arch, the axle shifts out of its intended position — leading to handling issues, accelerated tire wear, and potential loss of control while towing. Replacing the spring pack with the correct OEM unit restores proper axle alignment and load distribution.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

Why Buy From DHS Equipment

Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.

Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.