The Specialized Dry-Tech Fender Set. The Dry-Tech fender set is an engineered fender set with extended, research-based length for superior water protection. The fenders are made of a lightweight, yet highly durable multi-material design. It's also been engineered in our very own Win Tunnel in order to improve protection and to minimize water spray. The fenders are available in three different sizes (35, 45, and 52mm), and they're designed to work on bikes with 700C wheels—with or without Specialized Plug + Play frame mounting. Lastly, for a finishing touch, the fenders include heat-treated, lightweight aluminium fender stays with stainless steel hardware.  Specialized Dry-Tech Fender Set Features Engineered fender set with extended, research-based length for superior water protection. Lightweight, yet highly durable multi-material design. Engineered in our Win Tunnel to improve protection and minimize water spray. Designed to work on bikes with 700C wheels and with or without Specialized Plug + Play frame mounting. Heat-treated, lightweight aluminium fender stays with stainless steel hardware.