Shimano Ultegra FD-R8150 Di2 2x12-Speed Front Derailleur Brand_Giyo the 40 Carbon Disc is

the 40 Carbon Disc is optimized for 25mm-35mm tyres for fast road riding and racing

110- and 120-millimetre lengths

Complex and high quality carbohydrate mix for a multi-level energy release

Shimano uses aluminum cooling fins on these brake pads

Shimano Ultegra FD-R8150 Di2 2x12-Speed Front Derailleur Brand_Giyo the 40 Carbon Disc isSHIMANO ULTEGRA Di2 Front Derailleur 2x12 speed FD R8150 More compact and faster than ever, the ULTEGRA R8150 front derailleur performs digitally precise front shifts under any circumstances. Combining Shimano's new Di2 platform and the road incarnation of HYPERGLIDE+, the ULTEGRA R8150 front derailleur shifts between chainrings with our fastest, most seamless action. FEATURES Our fastest ever front shifting, 45% faster than FD R9150 Smaller, sleeker,