The Wilier Granturismo SL 105 Di2 Road Bike is a carbon endurance bike built for long-distance comfort, smooth control, and efficient performance across mixed road surfaces. Its advanced carbon frame reduces road vibration while staying responsive, and the 38mm tyre clearance expands its use beyond standard road riding. Clean cable integration and refined frame design improve both aerodynamics and durability, giving you a stable and consistent ride over longer distances.Key Features and Benefits:SLR Performance Frame Design: The frame design takes key performance traits from Wilier's top SLR models and applies them to this platform, giving you efficient power transfer and balanced handling. This ensures your effort translates directly into forward motion, helping you maintain speed with less wasted energy over long rides.Generous 38mm Tyre Clearance: The frame supports tyres up to 38mm, which allows you to run wider tyres for increased grip and comfort. This improves control on rough roads and light gravel, resulting in a more stable ride with reduced fatigue on longer routes.Advanced Carbon Frame Construction: High-quality carbon fibre is engineered to absorb vertical road vibrations while maintaining stiffness where needed. This reduces strain on your body without sacrificing responsiveness, helping you ride longer with consistent output.Fully Integrated Cable Routing: Cables run internally through the headset and handlebar, protecting them from dirt and weather exposure. This reduces maintenance needs and improves aerodynamic efficiency, while also giving the bike a clean and streamlined finish.Shimano 105 Di2 12-Speed Groupset: Electronic shifting delivers precise and consistent gear changes with minimal effort. This improves reliability under load and allows you to maintain cadence more effectively across varied terrain.Endurance Geometry with Carbon Seatpost: The frame geometry and carbon seatpost work together to support a stable riding position and absorb road buzz. This improves comfort over extended distances and helps reduce fatigue during long sessions.Long-distance riding depends on maintaining comfort without losing efficiency, and this bike addresses both through its frame design, geometry, and component choice. The vibration-damping carbon construction reduces physical strain, while the electronic shifting system ensures smooth operation under load. Wider tyre compatibility adds versatility, allowing you to adapt the bike to different surfaces without compromising stability or control.This is a practical option for riders who want consistent performance over distance with reduced fatigue and low-maintenance components. Its balance of comfort, control, and precision makes it well suited to regular long rides and varied road conditions.Size Guide:XXS (44): 4'8"-5'1"XS (48): 5'1"-5'4"S (51): 5'4"-5'7"M (54): 5'7"-5'10"L (56): 5'10"-6'0"XL (58): 6'0"-6'3"XXL (60): 6'3"-6'5"XXXL (62): 6'5"-6'9"