SHIMANO GRX FC-RX810 1x11s Crankset 11-Speed 42t 170 - 172.5mm Hollowtech II FC-RX810-1 SHIMANO GRX - Gravel Crankset - 1x11-speed SHIMANO's new FC-RX810-1 crank balances weight and efficiency for mixed-terrain riding. Gearing options cater for the specific demands of gravel riding and to maintain tighter gear steps for maintaining pedaling rhythm. Technologies Hollowtech 2 24mm Diameter Axle HOLLOWTECH technology is an ultra-lightweight hollow crankarm created by SHIMANO with the company’s own proprietary forging technology that also maintains rigidity. The addition of HOLLOWTECH II technology integrates the bottom bracket axle with the right crankarm for more stiffness and a weight savings to achieve a high-dimensional balance. Its outboard bottom bracket bearing system provides better weight distribution and more pedaling stability, allowing for more efficient power transfer. HG-EV HG-EV cassette sprocket is obtained 11-speed gear without compromising the 10-speed durability and improved HYPERGLIDE shifting. Specifications Weight: 650g (170mm) Chain line: 49.7mm Compatible BB type: Outboard Compatible chain: HG-EV 11-speed, HG-X11 Crank Arm Length: 170 mm, 172.5 mm Crank fixing bolt included: Yes Gear arms: 4 P.C.D.: 110mm Rear speeds: 11 Recommended BB Pressfit: SM-BB72 Without bottom bracket FEATURES; Brand: Shimano MPN: Does Not Apply Model: GRX FC-RX810-1 Country/Region of Manufacture: Japan Number of Chainrings: Single Material: Aluminum Color: Black Part Type: Crankset - With Chainring Compatible Bike Type: Gravel Bike For Bike Type: Mountain Bike Type Crankset - With Chainring Number of Speeds 1 HIGHLIGHTS SHIMANO GRX FC-RX810-1 11 Speed 42t Crankset 170/172.5mm Hollowtech II W/O BB FC-RX810-1 SHIMANO GRX - Gravel Crankset - 1x11-speed SHIMANO's new FC-RX810-1 crank balances weight and efficiency for mixed-terrain riding. Gearing options cater for the specific demands of gravel riding and to maintain tighter gear steps for maintaining pedaling rhythm. Technologies Hollowtech 2 24mm Diameter Axle HOLLOWTECH technology is an ultra-lightweight hollow crankarm created by SHIMANO with the company’s own proprietary forging technology that also maintains rigidity. The addition of HOLLOWTECH II technology integrates the bottom bracket axle with the right crankarm for more stiffness and a weight savings to achieve a high-dimensional balance. Its outboard bottom bracket bearing system provides better weight distribution and more pedaling stability, allowing for more efficient power transfer. HG-EV HG-EV cassette sprocket is obtained 11-speed gear without compromising the 10-speed durability and improved HYPERGLIDE shifting. Specifications Weight: 650g (170mm) Chain line: 49.7mm Compatible BB type: Outboard Compatible chain: HG-EV 11-speed, HG-X11 Crank Arm Length: 170 mm, 172.5 mm Crank fixing bolt included: Yes Gear arms: 4 P.C.D.: 110mm Rear speeds: 11 Recommended BB Pressfit: SM-BB72 Please evaluate pictures for further assessment to prevent misconception or problem that may arise once purchase by you buyers and seller alike! Thank you for looking. No return! No Exchange!