Harken Ninja Foot Ascender

Harken SKU: 103450
Harken Ninja Foot Ascender

Harken Ninja Foot Ascender

Harken SKU: 103450
Regular price $145.00
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Harken Ninja Foot Ascender

Part No. IN400

Maximum line Ø (mm) 13 mm

Maximum rated load (kN) 1.5 kN

Minimum line Ø (mm) 8 mm

The Harken Industrial Ninja foot ascender makes an arborist’s job easier because it reduces rope drag to the lowest of any available foot ascender. This means that there are smoother and easier first steps because you don’t have to counterweight the rope or reach down to pull the rope through the unit – resulting in increased productivity. The entry fairlead maintains correct rope alignment. Unlike every other foot ascender on the market, Harken Industrial’s dual cam system, based on Harken’s marine Cam-Matic ball bearing cleats, applies pressure to both sides of rope simultaneously. This provides more thorough holding power and even force than competitive designs whose cams act on just one side of the rope against a fixed wall on the other side. Other foot ascenders use an aggressive barbed single cam that can create additional drag on the line or damage the rope cover. The Ninja Ascender uses a transverse ribbed cam instead of barbs and the dual cam design prevents accidental kick-outs. It is also the first foot ascender that can work on either foot, and has fully adjustable straps.


Width (mm) 83 mm
Width (in) 3.3 in
Weight (g) 178 g
Weight (lb) 6.3 lb
Maximum line Ø (mm) 13 mm
Maximum line Ø (in) 1/2 in
Maximum rated load (kN) 1.5 kN
Maximum rated load (lb) 330 lb
Material Aluminum
Height (mm) 74 mm
Height (in) 2.9 in
Minimum line Ø (mm) 8 mm
Minimum line Ø (in) 5/16 in
Cam material Stainless steel


ManualNinja Foot Ascender1.88 MB


  • All orders can be expected to ship the available items within 2 business days from the order being placed, excluding Saturdays and Sundays.
  • Orders containing Pre-Order items will be sent in 2 split shipments with all available items being sent asap, and the remaining Pre-Order Items being sent when they become available.
  • For questions regarding open orders, email info@elevatedclimbing.com with your  order number and inquiry.
What is Pre-Ordering?
  • When an items is marked as Pre-Order, it means it is either an item we recently ran out of stock of or don't typically keep it in stock. 
  • Pre-Ordering an item guarantees it will make it on our next supplier order or is reserved for you if it is already in transit to the shop. 
  • Pre-Order lead times can vary depending on the item. Typically you can expect a 2-4 week wait time on most Pre-Order items, however feel free to reach out to us at info@elevatedclimbing.com with any Pre-Order lead time questions and we will do our best to give you updated expected wait times.
Return Policy
  • We offer free return shipping on returnable items within 90 days of being delivered.
  • No returns can be accepted for life safety gear (i.e. hardware, helmets, harnesses, rope, etc) for the sake of quality control of critical components of our customers' safety.
  • To initiate a qualifying return, email info@elevatedclimbing.com with your order number and item you are looking to return. 
  • Refunds are offered for the item(s) being returned, and do not include the initial shipping cost of the order, as the service of shipping has already been rendered.
  •  Free return shipping only available in lower 48 states

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