SHIMANO Ultegra Di2 R8150 Front Derailleur - 12-Speed - Braze-On wahoopromo Barrel bosses at the dropouts

Barrel bosses at the dropouts and crown

Use of a clutch-style rear derailleur is recommended

It measures 30 x 115 cm and is highly absorbent

Its super thin profile gives you maximum clearance while cornering and riding in deep ruts when you might need to dab

SHIMANO Ultegra Di2 R8150 Front Derailleur - 12-Speed - Braze-On wahoopromo Barrel bosses at the dropoutsMore 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. Shimano's fastest ever front shifting, 45% faster than FD R9150 Smaller, sleeker, lighter Frontal area reduced by 33% Weight cut to 116 g Top