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Knox Aegis Back Protector

Technically advanced CE back protectors

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Customer Reviews for Knox Aegis Back Protector

Knox Aegis Back Protector
September 17, 2020

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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Knox Aegis Back Protector
June 12, 2020

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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Knox Aegis Back Protector
February 28, 2020

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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Knox Aegis Back Protector
January 1, 2020

Great product

Good quality and comfy fit

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Knox Aegis Back Protector
September 23, 2019


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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Knox Aegis Back Protector
February 20, 2019

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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Knox Aegis Back Protector
January 17, 2019

Good safe kit

Comfortable. Good fit, and well made.

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Knox Aegis Back Protector
November 23, 2018

Very Comfortable

So far so good have work it for a few hundred miles so far without the slightest of niggles. Looks and feels like it will hold up will in an ancient but I'm yet to try it out in one. Sizing was a bit of a pain as even though I used the chart it still came up a few plates short. I informed SBS about my issue and returned the short one for an 8 plate which arrived the same week and now fits perfectly. For a size reference I'm 5' 11" or 179cm with a bit bigger than medium build.

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Knox Aegis Back Protector
June 11, 2018

Super comfortable

Once you set up the positioning of the kidney protectors and the tightness correctly it is super comfortable and you forget your wearing even with a packback on amazing.

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Knox Aegis Back Protector
April 15, 2018

Great product, fab service from Sportsbikeshop

Purchased to replace my old Knox which was coming unstitched after 7 years of use. Great packaging & fast delivery. I had bought a Forcefield from a store but had to take it back before I had even ridden in it as it just didn't feel right under my bike gear. The Knox is bulkier to carry but so much more comfortable.

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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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