Shop by Vehicle
Track Order
Contact UsKnox Back Protector Sizing
| Size | Waist-to-Shoulder (cm) |
|---|---|
| SM | 40 |
| LG | 50 |
Sizing information is provided by the manufacturer and does not guarantee a perfect fit.
- Holiday
- Helmets
- Holiday Deals
- Full Face
- Modular
- Dual Sport
- Open Face
- Half
- Dirt
- Bluetooth Included
- Carbon Fiber
- Graphics
- Internal Sun Visor
- Riding Gear
- PartsFilter by Vehicle:
- AccessoriesFilter by Vehicle:
- Gifts
- Luggage & Backpacks
- Tires
- 2025 Guides
- New Rider Guide
- Helmets
- Riding Gear
- ADV & Dual Sport Gear
- Airbags
- Beginner Gear
- Boots & Shoes
- CE Class A, AA, & AAA Gear
- Cold Weather Jackets
- Dirt Gear
- Gloves
- Heated Gear
- Jackets
- Jeans
- Mesh Jackets
- Pants
- Rain Gear
- Sport Gear
- Street & Cafe Gear
- Touring Gear
- V-Twin & Cruiser Gear
- Women's Gear
- Best Jeans Shop All
- Best Sportbike Gear
- Best V-Twin Gear
- Best Dirt Gear
- Best Mesh Jackets Shop All
- Best Touring Gear
- Sale
Menu
- Categories
- Holiday Deals
- Full Face
- Modular
- Dual Sport
- Open Face
- Half
- Dirt
- Bluetooth Included
- Carbon Fiber
- Graphics
- Internal Sun Visor
- Helmet Finder
- Bluetooth Communications
- HJC Up To $300 Off
- Shoei GT-Air II: $200 Off
- LS2 Deals Up To 30% Off
- AGV Pista up to $920 Off
- Bell up to 50% Off
- Shark up to 60% Off
- Nolan up to 60% off
- Closeouts
- Open Box - Now Extra 20% Off!
- New Arrivals
- Best of 2025
- Buying Guide
- ECE vs Snell vs DOT
- Understanding Rotational Impacts
- Holiday Deals
- Race Suits
- Helmets
- Airbags
- Rain Gear
- Heated Gear
- Jerseys
- Base & Mid Layers
- Riding Suits
- Headwear
- Alpinestars up to 30% Off
- REV'IT! up to 50% Off
- Dainese up to 50% Off
- TCX Footwear Up To $230 Off
- Alpinestars Tech-Air 5 Airbag $285 Off
- Roland Sands up to 60% Off
- Closeouts
- Women's Gear
- Youth Gear
- New Arrivals
- Shop Gear By Riding Style
- Filter by Vehicle:
- Filter by Vehicle:
- Shop Accessories By Riding Style
Riders Preferred Membership
- Discover
- Help
