SV-R Quick Release Steering Boss and Security Boss Assembly

The SV-R Quick Release Steering Boss and Security Boss Assembly offers a premium security and usability upgrade for your Land Rover Defender, designed and manufactured in-house to deliver exceptional strength, precision, and ease of use, specifically designed to allow fitting and removal of the steering wheel one-handed.

SV-R Quick Release Steering Boss

• Direct Fit: Attaches straight to the Defender 48 spline steering column – no need for multiple bosses or adaptors.
• Premium Construction: CNC-engineered and hard anodised to ensure long-lasting durability and resistance to wear.
• Compact Design: At just 55mm deep, it provides a sleek, minimal profile while maintaining full functionality.
• Wide Compatibility: Fits 48-spline Defender steering columns.
• Suitable for Momo steering wheels and all wheels with a 70mm PCD and 6 x M5 tapped holes.

SV-R Security Boss Assembly

Designed and manufactured in the UK, each SV-R Security Boss Assembly is machined from ALUMINIUM ALLOY: 6082 T6 for exceptional strength and reliability. The outer body rotates on a precision bearing, preventing the steering column from being turned when the lock is engaged – providing an additional layer of security on top of removing the steering wheel itself.

Designed with practicality in mind, the SV-R Security Boss Assembly offers fast, hassle-free installation. The design allows it to be easily fitted to the Quick Release Boss, giving you increased security and a visual deterrent in seconds.

Each lock is supplied with two keys. Please ensure your spare key is stored safely or that you have noted your key number – there is no alternative way to remove the lock without the correct key.

Engineered for strength, style, and ease of use, the SV-R Quick Release Steering Boss and Security Boss Assembly is the ideal choice for Defender owners for enhanced security and style.

Steering Wheel NOT included – Momo horn buttons cannot be used with this boss.

Safety Notice:

• Must NEVER be operated while driving.
• As a removable steering component, the driver is responsible for ensuring the boss is securely fitted and functioning correctly before use.

“Which 48 spline version do I need for my Defender?

In 2014, Land Rover introduced the Electronic Stability Platform (ESP) to the Defender. With this introduction, a small but significant change was made to the ring that cancels the indicators on the steering column and how the steering wheel interfaces with it.

On pre 2014 vehicles, the ring is blue plastic, and the steering wheel has prongs that fit into the cutout in the ring.

On post 2014 vehicles fitted with ESP, the ring is grey plastic and has prongs moulded into it that fit into recesses in the steering wheel. “