June 1, 2022June 1, 2022Mariposa Feature: Road Disc Bicycle with Shimano Ultegra R8170 Groupset A custom Mariposa road disc bike built with kaisei lightweight tubing, a Ritchey WCS Road Disc Fork with clearance for 700C x 30mm tires, a Shimano Ultegra Di2 R8170 2… 000