RD -R8000 -SS Shimano Ultegra - Achterdailleur - Short cage - Shimano Shadow Rd - 11 -Speed the Shimano Ultegra 8000 Achter Derilleur has now improved with the Shimano Shadow Rd design, has a sleek look and optimized shifting performance. applies to: 11-28T to 11-34T Properties: Model: RD-R8000-GS Series: Ultegra R8000 series Color: Group color Average weight: 210 grams Comments * No axle specification available Hollow axle: Yes Cable reiner: Yes Compatible chain: HG-EV 11-SPEED / HG-X11 Direct confirmation (Direct confirmation ( Conventional): X * Pivot Sachd Vans with Fluorecoating: 4 largest tooth crown max: 34T largest tooth crown min: 28t Max. Difference / for: 16t Bottom derailleur wheel on top of derailleur: Yes Rear derailleur wheel clearance: 11 Top normal spring type: Shadow Rd Smallest tooth crown max: 12T Smallest tooth Wreath min: 11t Capacity: 34T