If you ride with a mechanical Helite airbag vest, the tether strap is the part that makes the whole system work. It is the physical link between you and the bike. Get the installation right and the airbag fires the instant you separate from the motorcycle in a fall. Get it wrong and the system can trigger too late to help.
This guide walks through where to anchor the strap, how to set the length, and the few things to avoid. It takes about five minutes and needs no special tools.
Why correct installation matters
The strap connects the airbag vest to a fixed point on your motorcycle. In a fall, you are thrown clear of the bike, the strap pulls tight, and the key-ball is pulled from the release pin. That is what sets off the cartridge and inflates the airbag in about a tenth of a second.
Because the timing of that pull decides how early the airbag deploys, the anchor point and the strap length are not minor details. A strap that is too long, or anchored to the wrong place, delays the pull. The shorter the strap, the better, as long as it still lets you move and ride normally.
Where to anchor the strap
The best anchor point is a strong, fixed part of the frame, ideally reached by lifting the saddle and tying off close to the tank.
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Choose a point that can hold more than 150 kg. A metal frame section is ideal. Never use a plastic part.
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Keep the anchor away from any hot or sharp part of the bike, such as the exhaust or a cut metal edge.
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The attachment point should sit no lower than the bottom of the saddle. Lower than that and the angle of pull changes.
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Do not attach the strap to the handlebar. The bars move and turn, so they cannot give a reliable pull.
Step by step
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Adjust the length first. Set the strap as short as it will go while still letting you reach the controls, shift your weight, and get on and off without it pulling. This is the step most people rush.
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Attach it to the bike with a noose knot around your chosen anchor point. Pull it snug so there is no loose slack sitting in the line.
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Clip the lanyard to the vest before you ride, the same way you would put on a seatbelt. Unclip before you get off.
Test your movement before riding. Sit on the bike in your normal riding position and check the strap does not restrict you or pull on the vest. If it tugs when you lean or reach, lengthen it slightly and re-check.
When to replace the strap
The strap is a wear part. Check it regularly and replace it if you see any of the following: it looks worn, frayed or thin in places, it has been burnt or shows heat damage, or it appears cracked or has any other visible fault. If the lanyard itself has lost its elasticity or looks frayed, contact your dealer or Helite rather than riding on it.
A note on electronic vests
This guide is for the mechanical, tethered system. If you ride an electronic Helite vest, there is no strap to install. The vest reads your movement through sensors and deploys on its own.
If you have questions about which Helite model suits your riding, get in touch with our team at contact@helite.co.nz
Frequently asked questions
Where should I attach my motorcycle airbag strap?
Anchor it to a strong, fixed part of the frame that can hold more than 150 kg, ideally under the saddle close to the tank. Keep it away from hot or sharp parts, and never attach it to the handlebar or any plastic part.
How long should the tether strap be?
As short as possible while still letting you move and ride normally. A shorter strap pulls the key-ball sooner in a fall, which helps the airbag deploy on time.
Can I attach the strap to my handlebars?
No. The handlebars move and turn, so they cannot provide the reliable, fixed pull the system needs. Use a solid point on the frame instead.
How do I know when to replace the strap?
Replace it if it looks worn, frayed, burnt or cracked, or if the lanyard has lost its elasticity. Check it regularly as part of your pre-ride routine.
Do I need tools to install the strap?
No special tools are needed. You attach it with a noose knot around your anchor point and adjust the length by hand.