Trailer Wheel Clamp Defender Plus from Trojan is engineered to safeguard every trailer you own. Designed to deter would-be thieves at a glance and, if tampering occurs, to immobilize the trailer entirely, this is a trusted solution for peace of mind on the road, at the site, or during storage.

Built for all trailer types, the Defender Plus pairs rugged construction with smart security features that address real-world theft scenarios. The wheel cover guards against wheel-nut removal, while the clamp tightens securely through winding adjustment, ensuring a tight, dependable fit on every use. A tamper-proof lock adds an extra layer of protection, so unauthorized access is quickly ruled out.

Key benefits that matter in practice

• Its sturdy, unmistakable presence signals that the trailer is protected, discouraging opportunistic theft.
• Anti-tamper reliability: The lock design resists picking and forced entry, giving you confidence when the trailer is left unattended.
• Immobilization on attempted tow: If someone tries to tow while secured, immobilizing spikes engage to puncture the tyre, effectively stopping the move and buying you time to react.
• Universal fit for trailers: Compatible with 13" to 16" wheels and up to 235 mm wide, covering a broad range of common trailer sizes.
• Easy installation: Winding adjustment ensures a secure bite to the wheel without complex setup.
• Rigid, purpose-built design: Specifically developed for trailer use, delivering robust protection in demanding environments.

Specs at a glance: the Defender Plus weighs 8 kg, and the kit is supplied as a complete unit (Pack Size - EA). Part Number: T522000. Note that there are no spare parts available for this product, and items ship from the supplier within 4–7 days after purchase.

Why it’s the right choice for protecting your trailer

Whether you’re safeguarding a utility trailer, a caravan, a boat trailer, or a horse trailer, the Defender Plus delivers concrete value where it matters most: preventing theft, reducing damage from tampering, and giving you a reliable, long-term security solution. It’s not just a clamp—it’s a proactive theft deterrent that prioritizes quick, effective protection with straightforward use.

Designed for realism and practicality, it fits into standard trailer security routines, fits existing wheel configurations, and works with common road conditions. If you’re looking for a proven, purpose-built wheel clamp that combines visible protection with decisive immobilization, the Trojan Defender Plus stands out as a trusted, reliable choice for safeguarding your trailer against theft and tampering.