TWIST chest ascender – X-Cam

Rope access chest ascender incorporating X-Cam. Can be integrated into full harness or used to link sit & chest harnesses.

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The TWIST chest ascender rope access device has profiled attachment points and slimline design ensure that the TWIST sits flat against the chest of the user.

The ergonomic catch allows single-handed operation.

Detach-ability gives greater flexibility of use and economic replacement option.

The materials and design used in construction have been selected to provide high strength and durability needed for industrial applications.

Each TWIST chest ascender rope access device is individually marked for traceability and all parts are visible for easy inspection and maintenance.

TWIST chest ascender rope access device with X-Cam design which can be used with combination harness or with separate sit & chest harness.

When tested on new Tectra 11 mm low stretch rope, our X-Cam ascenders were found to be 25% stronger than their most popular sharp toothed competitor, with average breaking loads up to 675 kg for X-Cams versus 535 kg for the established design.

X-Cam has a more advanced tooth design than traditional cams and is more suitable for industrial applications as it does not pluck the rope, so reducing rate of rope wear.

X-Cam design gives increased performance over traditional sharp tooth design

  • Cam exerts considerable grip on rope after sheath has broken
  • Cam doesn’t pluck rope
  • Easy to remove from rope if accidentally jammed into knot

Ergonomic shape with profile grip

  • Giving optimum pulling position
  • Improved comfort

The TWIST ascender rope access device is part of heightec’s Rope Access Kit – Full body (WK22).

D42 Twist open on rope


  • X-Cam advanced tooth design
  • X-Cam superior geometry
  • Profiled attachment points & slimline design
  • Ergonomic low-profile release catch
  • Detachable from the harness
  • High strength & durable construction
  • Individual serial number


Sizing: Rope diameter 10mm - 13mm ropes
Material: Alloy body, Steel cam
EN Mass Test: 125 kg
Loading: 125 kg
Weight: 0.16 kg
Conformity: EN 567, EN 12841B