Tightline Arb Quick Step Knee Ascender

£69.98

Lightweight and efficient, the Quickstep knee ascender is designed to make rope ascents smoother and less fatiguing. Weighing just 205 g, it’s compact yet durable, compatible with 8–13 mm ropes, and fitted with a 45 cm adjustable foot strap for a secure fit. The high-strength latex rubber bungee provides consistent tension and smooth return, while the included WREN 8 KN carabiner ensures a reliable connection.

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The Quick Step Knee Ascender by Tightline Arb helps climbers and arborists ascend ropes with less fatigue. Lightweight at only 205 g, it is compact and easy to fit, adding minimal bulk to your climbing setup.

This knee ascender works on static ropes 8–13 mm in diameter, providing a secure grip as you climb. Its adjustable foot strap, with a high-strength bungee, maintains consistent tension against your leg. This design transfers force smoothly between your knee and foot with every step.

The included 8 kN WREN carabiner creates a reliable connection point. Always use this ascender alongside certified primary PPE devices, such as hand or chest ascenders, for full rope systems.

Important Note: The Quick Step is not certified as a primary life-support device. Use it only as an accessory to reduce fatigue during climbs. It is intended to complement, not replace, your main ascender system.

Key Features:

  • Lightweight and compact at 205 g for easy handling

  • Compatible with 8–13 mm static ropes

  • Adjustable 45 cm foot strap with high-strength latex bungee

  • Includes WREN 8 kN carabiner for secure attachment

  • Designed for professional arborists and tree-climbing applications

  • Reduces fatigue during long single-rope ascents

The Quick Step Knee Ascender makes rope ascents smoother and more efficient. Use it as part of a proper PPE rope system to enhance climbing comfort and control.

Additional information

Weight 0.205 kg

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UK Mainland orders have the following delivery charges based on the total value of your order:

Please note we are unable to deliver to PO Boxes.

  • £7.20 for orders under £100.00
  • Free delivery for all orders over £100.00

Orders can be returned within 30 days of receipt if you are not happy with the goods.

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