Notch Jet Step II Foot Ascender - Compact Dual-Cam Foot Ascender for Arborist Climbing Systems

The Notch Jet Step II Foot Ascender (item #100076) is a compact, toothless dual-cam foot ascender for UK arborists and tree surgeons running SRS/SRT, MRS or a closed system on a Blake's Hitch. Compatible with ropes from 8mm to 13mm and fully ambidextrous, it's worn on either foot to convert each step into clean upward progress with reduced drag and improved self-tending — so effort goes into the climb rather than fighting the gear.

Notch Equipment is a US-based designer and manufacturer of climbing, rigging and PPE built specifically for professional tree care, with a strong reputation among arborists for practical, field-tested innovation — the original Jet Step was the industry's first toothless dual-cam foot ascender. The Jet Step II is a complete redesign: the compact body removes the lower fairleads and adds angel wing guides on the dual cams to minimise kickout and dramatically reduce drag, while a new wire gate keeps trouser fabric clear of the fairlead and prevents accidental disengagement. Available from Gustharts with UK stock ready to ship.

Key Features

• Compact redesigned body — removes the lower fairleads found on the original Jet Step for a smaller, smoother profile with less to catch on branches or gear
• Angel wing guides on dual cams — help keep the rope correctly positioned in the cams, minimising kickout and dramatically reducing drag
• Toothless dual cams — squeeze the rope from both sides for strong grip on wet, muddy or frozen ropes, with reduced rope wear and improved self-tending so the device re-engages cleanly without needing to weight the rope end
• New wire gate — keeps trouser fabric out of the fairlead and prevents accidental disengagement during the climb
• Wide rope compatibility — works with ropes from 8mm to 13mm (5/16" to 1/2") across a broad range of climbing line diameters
• Y-shaped foot strap — fully adjustable for a secure fit on any boot, constructed from durable HMPE-coated webbing for long-lasting performance and minimal foot movement
• Replaceable foot strap — available separately as item #100077, extending the working life of the ascender
• Ambidextrous — works equally well on the left or right foot, with no left/right-specific variants to manage in a kit

Technical Specification

Jet Step II vs the Original Jet Step - What's Changed?

The Jet Step II is a ground-up redesign rather than an incremental update. If you're familiar with the original Jet Step, here's what's different:

For new purchases, the Jet Step II is the recommended choice — the redesigned body, angel wing cam guides and wire gate directly address the points climbers most commonly raised about the original. If you already run the original Jet Step and it's performing well, the core dual-cam mechanism and rope compatibility remain unchanged, so there's no need to switch purely for compatibility reasons.

Important Use Guidance

This is not a life-support or fall-arrest device. The Jet Step II is a foot ascender designed to improve climbing efficiency within a rope-based access system. It must be used alongside a certified climbing system appropriate to your technique (SRS/SRT, MRS or Blake's Hitch) and by a climber trained in that system.

Inspect before every use. Check the cam mechanism, wire gate operation and foot strap condition before each ascent. Toothless cams reduce rope wear significantly but should still be checked regularly for correct engagement and wear.

Confirm rope diameter compatibility. The Jet Step II is designed for ropes between 8mm and 13mm. Using a rope outside this range may affect grip, self-tending and overall performance.

Also Known As

The Notch Jet Step II is also referred to as a foot cam, foot ascender, rope walker foot ascender, SRT foot ascender, dual-cam foot ascender and Notch foot cam. For correct identification when ordering, reference item number 100076 for the Jet Step II, or item number 100077 for the replacement Y-shaped foot strap.

Pairs Well With

• Replacement Y-Shaped Foot Strap (item #100077) — the dedicated wear component for the Jet Step II; worth having a spare on hand for fleet kit or extended jobs
• Climbing Harnesses — required for SRS/SRT, MRS and Blake's Hitch climbing systems

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FAQs

What is a foot ascender used for?

A foot ascender attaches to the boot and grips the climbing rope, converting each step into upward progress and reducing the effort needed to ascend using SRS/SRT, MRS or Blake's Hitch techniques.

Which rope diameters is the Jet Step II compatible with?

The Jet Step II works with ropes from 8mm to 13mm (5/16" to 1/2"), covering a wide range of arborist climbing lines.

Can the Jet Step II be worn on either foot?

Yes. It's fully ambidextrous and works equally well on the left or right foot, with no left- or right-specific versions to manage.

What's different between the Jet Step II and the original Jet Step?

The Jet Step II has a redesigned compact body with the lower fairleads removed, angel wing guides on the cams to reduce kickout, a new wire gate, and an individually replaceable HMPE foot strap. See the comparison table above for full details.

Is the Jet Step II a life-support device?

No. It's a foot ascender for climbing efficiency, not a fall-arrest or life-support connector. It must be used with a certified climbing system appropriate to your technique and by a trained climber.

Is the foot strap replaceable?

Yes. The Y-shaped HMPE-coated foot strap is available separately as item #100077, allowing the strap to be replaced as it wears without replacing the whole ascender.

What climbing systems is the Jet Step II compatible with?

The Jet Step II is engineered for SRS/SRT, MRS and closed systems on a Blake's Hitch — the most common rope-based ascent techniques used by professional arborists.

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