SHIMANO Ultegra R8000 Hollowtech II crankset 170 mm

The All-New Shimano Ultegra R8000 Series Crank Features Lightweight Crankarms, A Hollow Outer Chainring, And A Wider Gear Pitch For Increased Clearance On Modern Road Frames. It Is Available With 53-39, 52-36, 50-34, And 46-36t Chainrings And 165, 170, 172.5, And 175mm Crank Arm Lengths. Features: - Lightweight Crankarm Design Optimized For Power-Transfer Efficiency: Minimal Weight Without Sacrificing Stiffness - Hollowtech Ii - Rider-Tuned Gear Performance Through Various Gear Combinations - Redesigned Fc For Greater Frame Compatibility: Wider Gear Pitch Increases Clearance Between Chain And Leading Teeth, Providing Compatibility With Frames Of O.L.D. 135 Mm And 410 Mm Chainstay Length Specifications: - Average Weight: 690 (53-39t) 681 (52-36t) 674 (50-34t) 668 (46-36t) - Threaded Bottom Bracket Shell Width (Mm)_7: Yes - Chainring Combination: 50-34t 52-36t 53-39t 46-36t - Compatible Bottom Bracket Type_Outboard: Yes - Crank Fixing Screw Included: Yes - Crank Arm Length (Mm)_165: Yes - Crank Arm Length (Mm)_170: Yes - Crank Arm Length (Mm)_172.5: Yes - Crank Arm Length (Mm)_175: Yes - Spider/Gear Arms: 4 - Hollowglide: X - (46-36t) - Hollowtech Ii: Yes - Hollowtech Crank Arm: Yes - Optional Chain Guard_Without Chain/Bash Guard: Yes - Recommended Bottom Bracket_Press-Fit: Sm-Bb72-41b - Recommended Bottom Bracket_Threaded (Normal): Sm-Bbr60 - Threaded Bottom Bracket Shell Width (Mm)_68: Yes - Q-Factor (Mm): 146 - Chain Line (Mm): 43.5 - Compatible Chain: Hg-Ev 11-Speed, Hg-X11 - P.C.D. Left / Right (Mm): 110 - P.C.D. (Mm): 110 - Rear Speeds: 11