Topeak Defender 26-Inch MTB Set FX/RX Fender Compact MTB fenders with quick release system that installs and removes in seconds Rear fender seatpost quick release adjusts for excellent alignment and coverage (fits posts 25.4-34.9mm) Front fender quick release system allows for seamless integration with most forks (Fits 19.6-26mm and 27.7-35mm steerer tubes) 380 grams for set