Harken Ninja Foot Ascender

Harken SKU: 103450
Harken Ninja Foot Ascender

Harken Ninja Foot Ascender

Harken SKU: 103450
Regular price $145.00
Shipping calculated at checkout.
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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


  • During checkout the customer will receive shipping cost based on weight and size of the order and shipping destination.  Once the order has been placed, an estimated delivery date will be given based on item availability and shipping address. An email will be sent keeping the customer informed on the status of items that are on backorder or pre-order.
  • Most items ship within 2 business days of order being placed.
  • Inner Mountain Outfitters offers free returns on most unused orders still in new condition. For returns/shipping inquiries, contact us here and include your name, email, phone number, and order number in the body. We do not offer direct exchanges, instead make a return with free shipping then make a separate order at any point (shipping rates apply). Refunds are issued upon receiving returned items, and only apply to the item(s) returned. (Initial shipping fees are non-refundable).

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