Product
CMI Large Ultra Ascender – Red (ULT01R)
The CMI Large Ultra Ascender is a compact, high-strength rope ascender built for smooth, reliable performance in climbing, rescue, and work-at-height applications. Its streamlined body and aggressive cam profile deliver confident rope capture while maintaining easy, controlled operation.Designed for efficiency and durability, the Ultra Ascender features an aircraft-grade aluminum body with a cast steel cam and stainless steel components. This proven cam design is backed by CMI’s lifetime wear-out guarantee.
Key features
- Compact, efficient design for smooth one-handed operation
- High-strength construction using aircraft-grade aluminum and steel components
- Positive cam engagement for reliable rope capture
- Integrated safety catch helps prevent accidental disengagement
- Proven Ultrascender cam with lifetime wear-out guarantee
Specifications
- Part number: ULT01R
- Minimum Breaking Strength (MBS): 4,600 lbs
- Weight: 9.5 oz
- Size: 7.4 in high x 3.0 in wide
- Body material: Aircraft-grade aluminum with stainless steel components
- Cam material: Cast steel
- Rope compatibility: 8.5–16 mm for vertical or near-vertical ascending; 5–8 mm fixed ropes
Configuration options
Available as left-hand, right-hand, or a left/right pair. Select your preferred configuration from the dropdown above.Pro tip:Using a matched left and right ascender improves balance and efficiency on rope. Always verify correct orientation before loading.
Basic use overview
The CMI Large Ultra Ascender is designed for intuitive attachment while maintaining secure cam engagement and safety catch closure.
- Open the safety catch using your thumb
- Open the cam using the thumb notch provided
- Place the rope fully into the ascender body
- Release the safety catch
- Allow the safety catch to return to the fully closed position before loading
Repeat the same process when attaching the opposite-hand ascender. Ultrascenders are intended to be used in left/right pairs.Pro tip:After installing the ascender on the rope, visually and physically confirm that the safety catch is fully closed. Improper closure may allow the ascender to disengage from the rope.
Important safety notice
Ascenders are life-support equipment. Proper training, inspection before each use, and appropriate backup systems are essential. Always follow manufacturer instructions and accepted climbing practices.View AllClose
