Cambio Shimano Ultegra Di2 RD-R8150 12s Lucchetti e Catene Stanchion diameter: 38 mm

Stanchion diameter: 38 mm

HEADSET: ACROS ZS56/ZS66 (ICR)

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changing from a first-class to a second-class lever system

Cambio Shimano Ultegra Di2 RD-R8150 12s Lucchetti e Catene Stanchion diameter: 38 mmThe new Shimano ULTEGRA R8150 12 speed is the fastest and most precise derailleur on the market in a more accessible version With the fastest and most precise derailleur on the market, the new ULTEGRA R8150 12 speed is more versatile than ever, thanks to a single cage length option compatible with 28 34T sprockets. The compact design includes an integrated wireless unit, a charger, and a switch. Features Model: RD R8150 Series: ULTEGRA R8100 Series