<!--ProdInc[300197547]/Mall:[backcountry_US]-->Gone are the days of awkwardly piecing together components that span from road to mountain bike disciplines and tossing them on your off-road drop-bar bike like Frankenstein crafting a living, breathing monster. Instead, we have a groupset of our own with Shimano''s GRX system launching earlier this year ? and now you can elevate that group beyond your usual cables with the GRX ST-RX815 Di2 Shifter & Disc Brake Caliper that bring GRX into the electronic scene. At first glance, it''s not all that different from Ultegra Di2, well, on the inside at least. Its actuation is the same, and offers the same benefits of program-ability, but on the outside you''ll find that the hoods are a whole new beast. They feature a much more drastic slope, and gripping traction designed to keep you securely supported in the cockpit, so an unexpected bump doesn''t have your mitts sliding off, plus a re-positioned lever built for easier access whether on the hoods or in the drops, so you can comfortably brake on rough terrain without risking it all. <h3>Details</h3> Shimano brings Di2 to the gravel scene for precise, electronic shifts Redesigned hoods feature steep slope to keep your hands secure Off-road tuned grip on hoods help you stay in place when its rough Lever is shifted slightly for better access in the drops ServoWave technology on the flat-mount calipers improves modulation Big shift buttons with positive clicks let you focus on riding, not shifting E-Tube technology allows you to fully customize your shifting Built to be run as a 2x11 group with GRX Di2 derailleurs Item #SHIU19L <h3>Tech Specs</h3> Lever : ST-RX815 Lever Adjustability : reach Actuation : [brake] hydra <a href=''https://www.backcountry.com/shimano-grx-st-rx815-di2-shifter-disc-brake-caliper?SHIU19L-BLA'' target=_blank><img src=''https://www.antpop.co.kr/antMain/AntImgView?CustID=jellymom2&MallKind=US&MallID=backcountry&ProdInc=300197547&MallIDEncodeYes=0&SiteName=PostSelf'' width=''100px'' height=''20px'' border=0></a>