The Sigma Overclamp Butler GPS mount revolutionizes your cockpit organization by positioning your computer centrally above the stem, even with short stems. This ingenious solution maximizes space on your handlebar while offering optimal visibility of your performance data.

Technical Summary

Designed by Sigma Elektro, the Overclamp Butler GPS mounts laterally on the left side of the handlebar via a robust hinged clamp. Compatible with standard diameters 31.8 mm and 35 mm, this high-resistance plastic mount integrates two 3D mounting pads allowing angular adjustment of ±5° to compensate for raised or bent handlebars. The rotation-based attachment system ensures quick installation and removal of the computer.

Extended Compatibility

• Sigma ROX Range: Officially compatible with ROX 2.0, 4.0, 7.0, 11.0, 11.1 EVO, 12.0, 12.1 EVO and Pure GPS models
• Alternative Use: Many users confirm excellent compatibility with Garmin Edge 540/840, offering a versatile alternative beyond the Sigma ecosystem
• Mounting Flexibility: Rubber 3D pads ensure perfect adaptation even on non-standard handlebars

Technical Highlights

• Aerodynamic Positioning: Streamlined design that reduces wind resistance while freeing up space for other accessories (lights, smartphone mount, etc.)
• Proven Robustness: High-resistance plastic material tested in extreme conditions — user feedback highlights impeccable performance on technical trails and demanding descents
• Intuitive Installation: Simple and quick rotational attachment, without additional tools for mounting/dismounting the computer
• Maximum Stability: The bolted hinged clamp ensures firm tightening that resists vibrations and repeated impacts

Practical Advantages

• Clear View: Central position at handlebar height to check your data without taking your eyes off the road
• Usage Versatility: Ideal for MTB, gravel, road or bikepacking — suited to all disciplines
• Reduced Bulk: Compact design that preserves your cockpit ergonomics
• German Quality: Manufactured by Sigma Elektro, a recognized reference for decades in cycling electronics

Installation and Adjustment

The mount attaches directly to the handlebar thanks to its adjustable clamp. The included 3D pads allow compensation for angle variations and ensure perfect perpendicular alignment, even on handlebars with complex geometry. This ±5° adjustment capability guarantees optimal readability regardless of your riding position.