SIS Beta Fuel Gels Strawberry & Lime (6 Pack) GSREDE1 Effortless electronic shifting paired with Rapha Effortless electronic shifting paired with a more traditional feeling actuation allows riders who are new to using AXS quick integration and provides another ergonomic option for those who have run AXS from the start This is why the Centaur groupset offers three high quality solutions to meet the needs of even the most demanding cyclist 8 enhances mean power output during 10 maximal sprint efforts by 3% compared with 2:1 ratio (O’Brien et al)– A ratio of 1:0 convenient fuelling solution with minimal risk of GI discomfort that enables you to maintain optimal performance