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Axle Torsion Suspension Unbraked Knott 750kg Galv 4x4" PCD
SKU: 98003
Description
This ready-to-fit, unbraked torsion axle from Knott, a trusted European manufacturer, provides a simple bolt-on solution for lightweight trailers (up to 750 kg). Fully hot-dip galvanized for excellent corrosion resistance, it's perfect for jet ski trailers and other marine applications. Pre-fitted with hubs featuring a 4X4" PCD pattern, the 1,475 mm hub-to-hub width allows direct mounting to your chassis with minimal fuss.
Key Features
- Ready-to-install bolt-on torsion axle with integrated hubs
- 750 kg total load rating, suitable for light trailer builds
- 4‑element torsion system prevents sway, enhances stability, and smooths the ride
- Hot-dip galvanized steel for superior corrosion protection in harsh environment
- 4‑stud 4" PCD hubs with stainless‑steel bearings, ready for wheel installation
- 1,475 mm hub spacing (hub-to-hub) to fit a variety of chassis layouts
Applications
- Jet ski and personal watercraft trailers
- Lightweight utility and recreational trailers
- Marine and coastal trailers
- DIY and custom-built trailer projects under 750 kg ATM
Specifications
- Suspension Type: Rubber torsion axle, bolt-on
- Braking: Unbraked
- Load Capacity: 750 kg (aggregate)
- Finish: Hot-dip galvanised steel
- Hub PCD: 4 studs × 4 in (≈101.6 mm)
- Hub-to-Hub Width: 1,475 mm
- Bearings: Stainless steel
- Brand: Knott
Kit Inclusions
- 1 × Galvanised Knott torsion axle (unbraked)
- 2 × Pre-fitted hubs (4X4" PCD) with stainless steel bearings
- Note: U-bolts or mounting plates sold separately
FAQs
Q: What's the difference between a torsion axle and a leaf spring system?
A: Torsion axles use an enclosed suspension system to provide cushioning and wheel movement. Because the suspension is integrated into the axle itself, installation is quick and straightforward. With fewer moving parts, they also deliver a quieter ride. Their compact, low-maintenance design makes them ideal for light to medium-duty trailers, especially in custom builds where space-saving and ride quality are priorities.
Leaf spring systems, by contrast, use layered steel strips mounted across the axle, and provide a durable suspension that performs well in heavier-duty, utility, commercial, or off-road applications.
Both systems have their strengths, and the right choice depends on your trailer's weight, environment, and intended use.
Q: What's the difference between a rubber and a steel torsion axle?
A: Both rubber and steel torsion axles are springless suspension systems, but they function differently. Rubber torsion axles use vulcanised rubber cords inside a steel housing to absorb road impact and provide a smooth, progressive ride. They're compact, virtually maintenance-free, and especially suited for light to medium-duty trailers.
Steel torsion axles, on the other hand, use internal steel rods that twist under load to create suspension movement. While effective, they tend to be heavier, are more commonly found in industrial or heavier-duty applications, and may offer less ride softness than rubber systems.
Rubber axles are preferred in light trailers where weight, ride comfort, and simplicity matter most, while steel torsion axles are better suited to heavy industrial trailers, off-road rigs, or high-capacity applications where durability and rigidity are prioritised over ride quality.
Q: How do I know if my trailer has a torsion axle?
A: Torsion axles typically have a sealed, square or rectangular tube with trailing arms. Leaf springs use stacked metal strips and are visibly exposed.
Q: Is this axle suitable for marine or coastal use?
A: Yes, the galvanised finish helps resist corrosion in wet environments, making it well-suited for use in or near water.
Specifications
| Type/Finish: | Bolt on |
| Brand: | Knott |
| Load Rating: | 750kg |
| Colour: | Galvanised |
| Material: | Steel |
| PCD: | 4 x 4inch |
| Type/Finish: | Bolt on |
Questions?
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