E-117 Tri Disc Rival eTap AXSThe New Reference Point For many, the E 117 Tri Disc is the obvious choice for their first dedicated triathlon bike. And since aspiring triathletes dont always come from a cycling background, disc brakes provide increased confidence as they dial in their TT position. The E 117 Tri Disc will also prove to be a great choice for more experienced triathletes eager to own a reasonably priced triathlon bike, which they can build up by investing in race day