ARK Trailer Spring Rocker Centre Arm Galvanised – TYPE B for 45mm Shackle Springs (SKU: RAI45G)

The ARK Galvanised TYPE B Tandem Rocker Arm (RAI45G) is a dependable and heavy-duty solution for dual axle trailer suspension systems. Designed with a 5/8″ main hole and suitable for 45mm wide shackle springs, this rocker arm offers a precise fit for reliable weight distribution and shock absorption during travel.

This version comes fully galvanised to resist corrosion and wear, making it ideal for marine, coastal, or all-weather applications where durability is key. With a tandem setup, this component allows your suspension system to pivot and adjust across both axles, improving stability and reducing the risk of damage to cargo or chassis.

Key Features:

• Type B configuration with 5/8″ main hole
• Compatible with 45mm shackle-type leaf springs
• 200mm overall length (standard tandem spec)
• Full galvanised coating for superior corrosion resistance
• Ideal for trailers using 15″–16″ wheels

Applications:

• Boat and marine trailers
• Dual-axle caravans and camper trailers
• Heavy-duty utility and farm trailers

Why Choose Galvanised ARK Components?

ARK is a leader in Australian trailer hardware, offering high-quality components designed to withstand Australia’s toughest towing conditions. Galvanised parts like the RAI45G are especially suited for long-term use in harsh or wet environments, ensuring performance and safety over time. Whether you’re heading into the outback or launching at the marina, this rocker arm helps keep your suspension working smoothly.

Installation & Maintenance Tips:

• Align with equaliser and shackle bolts before securing
• Use anti-corrosion grease in high-salt environments
• Periodically check for wear or play in mounting holes
• Re-torque bolts after first 100km of towing