Profile Design 52 ASA Aluminum Extensions POC Kryptonite is in the movies

Kryptonite is in the movies

and helps protect against chafing on longer runs

Disc brakes

has been plated with electroless nickel

With a folding T-handle

Profile Design 52 ASA Aluminum Extensions POC Kryptonite is in the moviesIntroducing the 52ASA the next evolution of our wildly popular Aero Shaped Carbon (ASC) extensions, now available in a sleek, high performance aluminum. Crafted with an advanced multi stage forming process, the 52ASA brings the same arm hugging benefits of our iconic shaped extensions, all at a more affordable price. The core innovation behind both the ASC and ASA series is simple: shift the extension sideways to seamlessly align with your arms