Advice & Guides Motorcycle CE armour markings explained
If it feels like armour in your bike kit then the law demands it is actually proper, protective armour. Here's how to tell how effective your impact protection is...
3 Feb 2022
RST D3O Viper Air CE Level 2 Back Protector
Lightweight and breathable back protector with CE level 2 protection compatible with some RST jackets
Details£31.49
RRP £34.99 - save £3.50
Size
Seen it cheaper?
Get a price match
Get a price match
FREE delivery & returns
Quick find: 2690439
-10%
Verified Customer Reviews for RST D3O Viper Air CE Level 2 Back Protector
Top spec D30 armour
22 Jun 2026 by Mat
Great back protector from rst. Really comfortable. I fitted this to my rst d30 leather jacket and i don't know I've got the back protector on. Top level d30 protection without getting too hot.
Helpful?
Perfect Fit
20 Jun 2026 by Gareth
As you'd expect, this fits perfectly into the RST Havoc jacket being the specified back protector. In fact, the fit is so precise I thought it wasn't going to fit into the pocket at first so make sure you curl and bend it whilst installing it rather than just trying to slide it in like you would with traditional solid armour.
Helpful?
RST D30 ViperAor CE Level 2 back armour
08 Jun 2026 by Anonymous
Very well made. Ver comfortable. Fits easily into back protector pocket on my summer jacket. I don't feel it digging into me when I'm riding unlike other protectors. Very good product & level 2 protection.
Helpful?
Just Fits
05 Jun 2026 by Iorath
Bought for my RST jacket that previously had no back protector. It just about fits in the pocket and means I can't use coat hangers so easily anymore!
It is flexible enough to be comfortable though and I soon got used to the extra thickness
Helpful?
Comfortable and light 
01 Jun 2026 by Rosie
Super light, flexible and comfortable, fits perfectly in an Alpinestars ST-1 jacket. I barely notice it's there while riding, and despite the recent heatwave it doesn't make my back super warm either. Would recommend!
Helpful?
Does exacty what it says in the tin!
26 May 2026 by Chris
Fits perfectly into the RST Ladies Spectre Air D3O Textile Jacket - Black. Other half says she can't even feel it's there while riding but it's great to know it is!
Helpful?
Back protector upgrade level 2 
22 May 2026 by Spencer B
Thicker than expected - heavier than expected. But hopefully I never have to see if it works.
Luckily the RST jacket is designed for it.
I just hope I dont look like Donatello aka Ninja Turtle riding with it on my back.
Helpful?
Fits rst s1 perfectly
16 May 2026 by adam
Great armour hopefully never have to put it to the test but feel safe knowing its there fairly good value and can use it on other RST jackets
Helpful?
No more sweaty back
14 May 2026 by Rich
Allows airflow and conforms much better than the previous foam model
Helpful?
Reviews with photos - See all
Description
Dimensions: 260mm x 398mm
Thickness: 18mm
Weight: 331g
Torso Length: 44-48cm
Large
Dimensions: 267mm x 435mm
Thickness: 18mm
Weight: 369g
Torso Length: 48-52cm
Manufacturer
RST D3O Viper Air CE Level 2 Back Protector
- Lightweight and breathable construction
- CE level 2 protection
- Offering 3.5x greater breathability
- 20% less contact with the rider's back for maximum comfort
- Greater flexibility thanks to new wave geometry and material formulation
Born out of the motorcycle sector's best-selling back protector, D3O Viper, the D3O Viper Air range takes back protection to another level.
The Viper Air L2 delivers over 3.5x greater breathability, while having up to 20% less contact with the rider's back for maximum comfort. It also provides greater flexibility while being lighter, thanks to new wave geometry & new material formulation.
The lightest, most comfortable, and breathable back protector ever developed by D3O - with no compromise on protection. The Viper Air is designed to enable riders to ride freely with no distractions.
Specifications
Medium
Large
Advice & inspiration
Advice & Guides You may also like...
You won’t get it cheaper. Our Price Match Promise.
Find it cheaper at any major motorcycle accessory retailer, online or in-store and we‘ll match it.
How to request a price match.