【2026年版】世界一安いロードバイクはどれ？有名34社・904台を徹底調査！シマノ全グレード別ランキング【価格一覧表】

Timecode English Translation 0:00 Introduction: Theme explanation 0:11 Video flow (Contents/Outline) 0:32 Purpose 0:42 Author/Creator introduction 0:54 About Road Bikes (Commonly seen bicycles) 1:19 About Road Bikes (Frame materials) 1:38 About Road Bikes (Classification/Types) 2:07 About Road Bikes (What is a "groupset"?) 4:37 Dura-Ace Di2: World's Cheapest Price Ranking 7:52 Ultegra Di2 and Mechanical: World's Cheapest Price Ranking 10:50 105 Di2 and Mechanical: World's Cheapest Price Ranking 13:39 Tiagra: World's Cheapest Price Ranking 13:54 Sora: World's Cheapest Price Ranking 14:09 Claris: World's Cheapest Price Ranking 14:26 Tourney: World's Cheapest Price Ranking 14:41 Conclusion