Mammut Assist Belay Resistor Belay Resistor

The Assist Belay Resistor is a mechanical device that increases rope friction when clipped to the first quickdraw. It is intended for climbers and belayers in sport and gym lead climbing using single ropes within the specified diameter range.

Main benefits

• Patented floating-cam design — the resistive action activates only during a fall or lowering
• Increases rope friction when attached to the first quickdraw, reducing the risk of groundfalls with large weight differences
• Boost Mode — clipping to the first bolt with a locking carabiner improves engagement for larger weight differences
• Allows controlled lowering of heavier climbers and easy release after activation
• Compatible with single ropes 8.7–11.0 mm

Suitable for sport and gym lead climbing and for sport-protected multi-pitch routes where a two-rope technique is not used. The device attaches to the first quickdraw or anchor and provides additional friction to help the belayer manage significant weight differences.