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Shimano 105 Di2 R7150, the brand\u2019s long-awaited third-tier electronic groupset, has finally arrived. The \u00a31,730 \/ $1,890 \/ \u20ac1,869 groupset brings more affordable electronic shifting<\/a> to the Shimano road groupset line-up than ever before.<\/p>\n Like Ultegra R8100<\/a> and Dura-Ace R9200<\/a>, Shimano\u2019s 105 Di2 road bike groupset<\/a> is semi-wireless and 12-speed. However, unlike those two groupsets, 105 Di2 is only available with disc brakes<\/a>.<\/p>\n The new groupset is claimed to weigh 2,992g and stands in direct competition with SRAM Rival eTAP AXS<\/a>.<\/p>\n Here, we take a deep dive into everything you need to know about the new groupset.<\/p>\n We also have a comparison between SRAM Rival eTap AXS and Shimano 105 Di2<\/a>, alongside a summary of all of the new bikes available with the new groupset<\/a>.<\/p>\n Plus, you can read the thoughts of BikeRadar\u2019s senior technical writer, Simon von Bromley<\/a>, on what the release of a third-tier electronic groupset from Shimano means for the future of mechanical groupsets on the road<\/a>.<\/p>\n Here are the five key things you need to know about Shimano\u2019s new 105 Di2 groupset:<\/strong><\/p>\n <\/p><\/div> <\/section>