Trojan Slipper Eye Leaf Spring 3500kg 45mm Wide Bulk 10 Pairs

Engineered for heavy trailers that demand dependable load sharing, the Trojan Slipper Eye Leaf Spring is a purpose-built tandem suspension solution. This bulk set features 10 pairs designed with the Eye-to-Slipper configuration, where the eye ends of the springs are fixed to the centre rocker. The result is maximum rocker movement and superior articulation—crucial for off-road and demanding commercial applications where uneven terrain and rough roads are common.

Trojan’s Rocker Tandem Suspension system distributes the load evenly across all four trailer wheels, reducing per-axle stress and delivering a smoother, more predictable road footprint. By mounting the springs on a rocker bar that pivots on a central hanger, this design helps keep trailer handling stable even when one wheel encounters a bump or obstruction, enhancing traction and overall safety.

Why this design matters

• Enhanced articulation: Eye-to-Rocker connection enables greater rocker travel, making the suspension more responsive to irregular surfaces.
• Balanced four‑wheel load distribution: The rocker mechanism spreads weight across all wheels, improving stability and reducing wear on individual components.
• Direct-to-chassis fitment: Simple, robust mounting that integrates cleanly with chassis-mounted hardware for reliable performance.
• Commercial and off-road ready: A rugged solution built to handle harsh environments, heavy hauls, and challenging job sites.

Key specifications

• T284035B
• Capacity per pair: 3500 kg
• Leaves & size: 5 leaves, 45 x 8 mm
• Fitment: Direct to chassis
• Includes: Bulk 10 pairs
• Note: Does not include axle U-bolts or plates

Ideal uses & practical insights

Designed for tandem-axle trailers that regularly run loaded and operate in rugged conditions, this Trojan suspension is well-suited for transport, construction, agricultural, and mining support equipment. The 45 mm wide leaves provide durable support while maintaining a manageable ride height, making it a reliable upgrade for aging or high-mileage trailers. When you choose this bulk set, you’re equipping your fleet with a proven, long‑lasting suspension that reduces downtime and maintenance frequency by delivering consistent, predictable performance under load.

What to expect in real-world scenarios

• Heavy-haul applications: Smooths out long hauls with heavy loads across uneven roads, minimizing bottom-out and cab jitter.
• Off-road or rough-site work: Maintains traction and wheel contact on gravel, dirt, or rutted surfaces by allowing greater spring travel at the rocker center.
• Fleet reliability: The direct-to-chassis design simplifies installation and reduces mounting complications on busy work sites.

Maintenance tips for lasting performance

• Regularly inspect the centre rocker and pivot points for play or wear; ensure the rocker bar moves freely without binding.
• Check leaf alignment and fasteners during routine servicing to prevent uneven loading and noise.
• Lubricate bushings or pivot hardware as recommended by the manufacturer to preserve smooth operation.
• Plan periodic re-tensioning or inspection of mounting hardware to maintain the intended load distribution.

With the Trojan brand’s history of heavy-duty suspension solutions, this Eye-to-Slipper leaf spring set delivers a robust, field-proven option for operators who demand reliability, ease of installation, and consistent performance across challenging conditions. The bulk 10-pair package is ideal for fleets looking to stock up and minimize downtime, ensuring trailers stay on the road longer with fewer component failures.