Alpinestars RK-S Knee Brace Sleeve review: Specifically designed to be worn with the Alpinestars range of off-road boots and knee braces. This guide considers the listed features and the checks to make before buying.

This is a specification-based buying guide, not a hands-on road test. We may earn a commission from purchases through our links, at no extra cost to you.
Key features of Alpinestars RK-S Knee Brace Sleeve
Sportsbikeshop lists the following details for the checked version:
- Flat-locked seams and soft-touch textile for enhanced comfort
- Sublimated graphics for added durability
- Compatible with all Alpinestars knee braces
- Fold-over design at the top and bottom engineered to be worn under a knee brace, preventing slipping during rides
- Wear-resistant textiles ensure longevity
- Stretchable textiles enhance rider comfort
Compatibility and positioning
Compare the protector’s size and outline with the intended garment or fitting system. A matching brand name alone does not establish compatibility. Check the position when wearing the complete riding kit and moving into your riding posture. The protector’s own rating should not be confused with certification of an entire garment.
See our motorcycle body armour reviews for more buying guides.
Related reading: Alpinestars Nucleon Flex Pro Chest Protector Insert Review.