Timbren ASR2KHDS01 HD Axle-Less Trailer Suspension 2000 lb Straight Spindle with Brake Flange

The Timbren ASR2KHDS01 is a 2,000 lb rated Heavy-Duty Axle-Less Trailer Suspension system engineered specifically for off-road and overland trailer applications. By eliminating the traditional through-axle entirely, this independent suspension design delivers exceptional ground clearance and maximum control over rough, unpredictable terrain — whether you're heading to a remote campsite, a hunting trail, or an overland route.

At the heart of this system is Timbren's proprietary Aeon® Hollow Rubber Spring, a progressive-rate main spring that absorbs road shock and supports the trailer's load while delivering a smooth, stable ride at any load level. As weight increases, the spring compresses and becomes stiffer, automatically boosting its load-carrying capacity. Integrated rebound springs act as return devices to minimize rattle and bottoming out, while also maintaining constant pressure on the arm so the suspension is never completely relaxed.

Key Features:

• 2,000 lb load capacity — optimal performance at 60–80% of rated capacity
• Heavy-gauge steel construction with reinforcing gussets for off-road durability
• Independent suspension design eliminates the through-axle for superior ground clearance
• Aeon® progressive-rate rubber spring for automatic load-response stiffening
• Straight (no-drop) spindles compatible with standard-width tires 235/85R16 or smaller
• 4-bolt brake flange included for optional brake integration
• Shims included to allow alignment and camber adjustment specific to your trailer frame
• Fits any trailer frame width — bolt-on or weld-on installation
• Sold as a complete pair (driver and passenger side) with mounting hardware
• Spindle nuts and washers included — no separate purchase required
• Total suspension deflection: approximately 2-5/8 inches
• Frame to hub face length: 6.0 inches

The HD designation sets this system apart from standard-duty models through added reinforcements such as gussets that provide the extra strength needed to withstand the demands of off-road and overland use. The unique geometry features built-in camber and toe-in to help your trailer track straight, reducing tire wear. Hubs and bearings are not included; the system uses a standard 3,500 lb bearing combination.