Product Name: Bianchi OLTRE XR.4 DISC Dura Ace Di2 Roadbike - 2021 Manufacturer: Bianchi Bikes Item Code: BIA491765 activity: Bike material: Carbon usage bikesport: Road Bike rims: Vision 700X19c, clincher and TLR chain: Shimano Dura Ace CN-HG901-11 cassette: Shimano Dura Ace CS-R9100 shifter: Shimano Dura Ace DI2 ST-R9170 2x11sp rear derailleur: Shimano Dura Ace DI2 RD-R9150 SS 11sp front derailleur: Shimano Dura Ace Di2 FD-R9150-F, braze-on type bottom bracket: Shimano SM-BB92-41B, PressFit Road chainring ratio: 50-34 crank arm length: 170, 172,5, 175 crankset: Shimano Dura Ace FC-R9100 50x34T, Hollowtech II, 170mm-47/53cm, 172.5mm-55/59cm, 175mm- 61cm brakes: Shimano BR-R9170 | hydraulic disc brakes wheels: Vision Metron 55 SC, full carbon disc brake, thru axle 12x100mm - 12x142mm seat post: Oltre Full Carbon Aero, Setback: 25 mm / -10 mm saddle: Fi'zi:k Argo Vento R1, 7x10 rail, 260x140mm bar tape: Black soft Microfiber taper w/shockproof EVA-139 handle bar: Vision Metron 5D ACR Disc Integrated Aero bar fork: Bianchi Full Carbon Disc / Countervail, 1.5", Flat Mount, 12x100 mm headset: FSA Orbit custom 5D ACR, 1.5", specific for Metron ACR integrated handlebar frame: Oltre XR4 Disc Carbon / Countervail, PressFit, Flat Mount caliper, 12x142 mm groupset: Shimano Di2 (electronic) gear ratio: 11-28 number of chainrings: 2 shifting system: 11-speed shifting actuation: Electronic brake type: Disc Brake wheel size: 28" (29") (622mm) tires: Vittoria Corsa G2.0 graphene, 700x25c, 320TPI, Folding Model year: 2021 Color: Black Turquoise manufacturer item code: YQB15 Dangerous goods: no