KYM 4 Spring Steel Arm Set with Springs & Hardware

The KYM 4-Spring Steel Arm Set (T-STH-4SP93-PTP) is a complete flip-arm superstructure replacement kit built to fit dump bodies and trailers up to 23 feet long. This all-inclusive “pin-to-pin” solution provides maximum impact resistance, making it ideal for repairing damaged arm components or upgrading an outdated setup. Delivering reliable spring tension, seamless operation, and long-lasting durability, this kit ensures your loads remain safely covered on every trip

Key Features

• Heavy-Gauge Steel: High-yield steel construction resists bending and cracking under impact.
• 4-Spring Pivot Capacity: 8 total spiral springs (4 per side) smoothly drive flip arms on bodies up to 23′.
• Complete System Kit: Includes lower/upper arms, steel 90° corners, cross tube, pivot pins, and hardware.
• Corrosion-Resistant: Protective finish guards against road salt and moisture.

Specifications

• Part Number: T-STH-4SP93-PTP
• Vendor: KYM Industries / TSI
• Material: Heavy-Gauge Fabricated Steel
• Spring Capacity: 4 Springs per side (8 Total)
• Body Compatibility: Dump bodies up to 23 feet

What’s Included

• (2) Steel Lower Arms & (2) Steel Upper Side Arms
• (2) Steel 90° Corners & (1) Steel Upper Cross Tube
• (2) 4-Spring Pivot Pins & (8) Spiral Torsion Springs
• Stainless Bushings, Snap Rings & Rubber Centering Bumpers
• Full Fastener & Mounting Hardware Kit