ARK Rocker Roller Centre Arm for 2–4T Tandem Suspension – Suits 60mm Leaf Springs (SKU: RRA24B)

The ARK Rocker Roller Centre Arm (RRA24B) is a robust, heavy-duty suspension component built for high-capacity tandem trailer systems. Suited for 2 to 4 tonne rocker roller suspension kits, this centre arm offers a stable and reliable connection point between leaf springs and equaliser hangers, ensuring balanced load distribution even under extreme towing conditions.

With a 19mm centre bolt hole and 17mm spring joint bolt holes, this arm is engineered for strength and precise fitment. It features a 190mm distance between spring bolt holes and is designed specifically to accommodate 60mm wide leaf springs, making it the go-to choice for larger caravans, heavy-duty utility trailers, and commercial hauling setups.

Key Features:

• Suits 2T, 3T, and 4T ARK rocker roller kits
• 19mm centre bolt hole diameter
• 17mm spring joint bolt holes
• 190mm between spring mounting holes
• Designed for 60mm wide leaf springs
• Ideal for heavy-load, dual-axle trailer applications

Typical Applications:

• Heavy-duty tandem axle trailers
• Large caravans and campers
• Boat trailers with high load capacity
• Industrial, mining, or construction trailers

Why Choose ARK Rocker Roller Components?

When it comes to rugged reliability, ARK’s rocker roller parts are engineered to deliver performance and safety. Trusted by professional trailer builders across Australia, ARK components are known for high-precision fabrication, quality steel, and long-term durability under harsh conditions.

Installation Notes:

• Ensure matching bolt diameters (19mm centre / 17mm spring joint)
• Install in conjunction with matching rocker roller equaliser and shackles
• Recheck bolt torque after first few uses to ensure safety
• Regularly inspect for elongation at bolt holes with high loads