Knox Aegis Back Protector

Technically advanced CE back protectors

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Customer Reviews for Knox Aegis Back Protector

March 27, 2022 - by Richard H


I'm 6'2" and went with the 8 plate racing which is a perfect fit. When you're trying it on, don't tighten the straps too much or it'll ride up your back. There's a fair bit adjustment available to play around with. Under the leathers it's comfortable and moulds fairly quickly, feels and looks really well made. There's also armour to place over your kidneys on the waistband too. I got this for trackdays but can see myself using it on the road too, can't be too careful.

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August 9, 2021 - by Nicholas M

You feel protected

I looked at loads of reviews of back protectors before going for the Knox. It's certainly a sturdy piece of kit but once on the bike I hardly felt it. Really comfy and light. We'll pleased.

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April 4, 2021 - by Grace T

Great back protector

Really comfortable,only used a few times up to now, feels very protective. Take a little to get used to but wouldn't ride without it now.

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December 11, 2020 - by Thomas B

Realy like it!

Its large and comfortable. I am 175 cm long and ordered the 8 plate and that's the right size for me. The waist band can be adjusted for height. I had some problem to take it of for adjustment as I was afraid to damage it. Asked Knox own chat service for advise and was told I could use more force and it worked. They claim this part has been stress tested so I just have to believe them. Used it a few times already (its December) and I am happy with it. Seems very safe.

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September 17, 2020 - by Chris L

Great bit of kit

I've had this for a few weeks now and wish I had it sooner! It takes a couple of rides for it to feel comfortable, but now I don't notice it and wouldn't ride without one. I'm 6" and I've got the 8 which fits perfectly. Can't really go wrong with knox armour!

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June 12, 2020 - by Paul R

Reassuringly Robust Feeling

This is a solid, chunky piece of kit with large Velcro straps that fasten around your belly and have the added benefit of acting like a corset to hold back some of the middle-age-spread! Yet it's also surprisingly comfortable and well ventilated so I didn't get overly sweaty during the uk's recent hot and sunny spell. But the best part about wearing this back protector is the feeling that you're covered should the worst happen; great peace of mind.

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February 28, 2020 - by Andy N

Great piece of kit

Lightweight and surprisingly comfortable, barely aware that I am wearing it and it's very reassuring too. Recommended.

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January 1, 2020 - by Sam L

Great product

Good quality and comfy fit

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September 23, 2019 - by Murdo M


Very comfortable to wear, you forget it's there almost immediately, I hope I never have to test it though, money well spent, SBS 5 star too.

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February 20, 2019 - by Jonathan P

Comfy fit

Got this as part of the Knox range as I had chest protector as I'm 6ft 3 and no back protector with my jacket easy to fit as well as adjustable kidney proctors was a no brainer to buy well worth the money

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Press Reviews for Knox Aegis Back Protector


Knox Aegis Back Protector

The most technically advanced back protector available and is the result of an intensive 12 month R&D programme. The Aegis is 30% lighter than its predecessor. It is a low profile under clothing and is totally flexible for comfort and fit. A system of flex channels allows it to sculpt around the back, making it more comfortable to wear under tight outer riding apparel. It is completely breathable with a superior air venting system for maximum air flow to keep riders cool. The spine section articulates freely moving with the rider but at the same time ensuring maximum protection is maintained in all positions. The integral shoulder strap slider system allows the straps to adjust automatically to the correct position during use. The race style 8 plate model has added coccyx protection.

To determine the correct sizing measure from the nape of the neck to the waist using a tape measure or the Knox measuring PDF which can be downloaded below. Using this measurement refer to the sizing chart below to determine the correct size back protector.

Knox Armour Size Chart

Knox back protector sizing chart

  • Completely breathable with superior air venting system for maximum air flow
  • Spine section articulates freely moving with the rider
  • Race style has added coccyx protection
  • Breathable, tough and flexible
  • Fitting system for optional Knox CE approved chest protector
  • Machine washable for continued freshness
  • Low profile
  • Quick release soft shoulder straps
  • Honeycomb technology
  • EN1621-2 Level 2


Knox is a British company that has been at the cutting edge of impact protection design since 1981. Their brand partners from around the world are some of the biggest companies in motorcycling that trust Knox and benefit from fitting Knox CE protectors in their garments. They have a very experienced team of experts who understand garment construction. Knox is the company behind the multi award winning Knox brand of Body armour, Original Equipment, Hand armour, Cold Killers and Dry Inside.

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