Global Gear Bicycle Market Size, Share Demand Report By Product Type (Mountain Bikes, Road Bikes, Hybrid/Commuter Bikes, Touring Bikes, Gravel Bikes, Electric Gear Bicycles), By Gear Type (Derailleur Gear Bicycles, Hub Gear Bicycles, CVT Gear Bicycles, Electronic Gear Shift Bicycles), By Frame Material (Aluminum Alloy, Carbon Fiber, Steel, Titanium), By Distribution Channel (Offline Retail, Online Retail), By End User (Recreational Cyclists, Urban Commuters, Professional Cyclists, Adventure/Touring Cyclists, Students & Young Riders), By Region & Segment Forecasts, 2025–2030