Replacement straps for foot ascender Harken Ninja / Notch JetStep

Upgrade your HARKEN NINJA or NOTCH JET STEP foot ascender with this top and bottom strap set for improved comfort and reliability. Both straps are fully adjustable and designed to stay secure and stable on your boot—even during intense use.

The attachment points can be easily adjusted or replaced thanks to heavy-duty buckles. Extended locking axles prevent shifting and keep the ascender firmly in place on your footwear. High-wear areas—like the inside of the boot—feature reinforced stitching and added protective sheathing to ensure long-term durability under load.

The lower strap is length-adjustable and uses the same locking buckle as the ascender itself, preventing any unwanted slippage. The upper strap is all about ease of use: two robust D-rings hold it securely in place but can still be released quickly with one hand. A long, red pull loop makes handling easy—even when wearing gloves. Two strong rubber keepers secure the loose strap end so nothing dangles or gets in the way.

This strap set ensures a perfect fit for your foot ascender and makes rope ascents easier, safer, and more efficient—engineered for the real-world demands of professional tree care.