At the highest competitive level, often only the tiniest nuances make the difference. Those who want to achieve absolute top performance in track cycling are highly dependent on their equipment. The DF4 was developed for track cyclists who expect nothing but the best in terms of performance and stiffness. The DF4 targets specific points to extract even more performance compared to its predecessor. The stiff construction ensures maximum power transfer through the pedals – with nearly loss-free efficiency. Additionally, the lighter design ensures that every watt generated is converted into forward momentum even more efficiently as you push the limits of what is possible. Handlebar wheel and tire not as shown: Frame Size: DF4 Carbon Track Frame - (51cm) Alpina Wing Pista Carbon Track Fork: Alpina Wing Pista Carbon Track Fork Seatpost Size: DF4 Carbon Aero Seatpost - 320mm Alpina 1-1/8th-45x45 Headset (Suitable For Dual-DF4-Seta-Scala): Alpina 1-1/8th-45x45 Headset (Suitable For Dual-DF4-Seta-Scala) DF4 Seat Clamp Expander-2019: DF4 Seat Clamp Expander-2019 Adjustable Fork Expander: Adjustable Fork Expander 65mm DF4 Dropout: DF4 Dropout Datatag Security: Datatag Security System (Ultimate) Gtechniq Bike Ceramic Coating: None-Protection-Selected Crank-Set Option: Alpina 165mm BCD 144mm Crankset Chainring Size: Alpina Chainring SOLID (Black) - 52T Chain Option: Izumi Super Tough 1/8th Track Chain - Gold Alpina - BSA (Sram Type 24-22mm Bottom Bracket Spindle): Alpina - BSA (Sram Type 24-22mm Bottom Bracket Spindle) Handlebar/Stem Model: Deda Zero 1 Handlebar/Stem Handlebar Size: Deda Zero RHM 01 (Alloy) (38cm - Outside-Outside) Handlebars Stem Option: Deda Zero (8cm) Stem Handlebar Tape: Deda Handlebar Tape - Orange Saddle Option: Selle Italia X3 Boost Flow Saddle Pedals: None-Fitted Wheelset: Alpina A6T Carbon Tubular Track Wheelset Tyre Option: Vittoria Pista Control Tubular Para BLK Tyre (23-28) Fixed Wheel Sprocket: Alpina Track Sprocket (Silver) (15T) FREE Wheel Sprocket: None-Fitted Customise: Colour Option: Single Colour, Single Colour: Cosmic Orange, Decals: Holographic Decals (£29.99), Lacquer Finish: Gloss Finish