Shimano FH-RS770 Center Lock Disc Rear Hub For 12 mm Thru-Axles

The Rear Hub FH-RS770 by Shimano – An option for disc road bikes
The Shimano FH-RS770 rear hub is a groupless model designed for Road bikes with disc brakes and 12 x 142 mm thru-axles. It is about equal to Ultegra. The 11-speed steel freehub ensures efficient acceleration. Body and axle are made of weight-saving aluminium. Of course, FH-RS770 was also equipped with low-maintenance, sealed cup & cone bearings.
Specifications:Application:Road, CyclocrossBrake Type:Center Lock DiscFreehub Body Type:steelTechnical Information:Body Material:aluminiumBearings:cup & coneSeals:contactFeatures:Ultegra-level rear hubefficient accelerationflange diameter 52.8 mm left, 53.8 mm right7.5 mm offsetCBN precision machined bearingsaluminium axlesanodised hub shellTechnology:Cup and Cone Bearings
Angular contact ball bearings of the cup & cone type are superior to sealed cartridge bearings in terms of load carrying capacity, as they distribute lateral and vertical forces better, and thus run particularly smoothly and last a long time. They are also easier to adjust, maintain and replace.

E-Thru
E-Thru is a tool-free thru-axle system from Shimano that optimises the stiffness-to-weight ratio and ensures easy handling via its reliable internal cam mechanism. It is characterised by a high torsion resistance and thus also supports cornering at high speed. E-Thru thru-axle hubs and thru-axles are available in the corresponding over locknut dimensions for front and rear.
Models:12 x 142 mm / 28 hole / Shimano:
Over Locknut Dimension:12 x 142 mm thru-axleSpoke Hole Count:28 holeFreehub:Shimano RoadNote:Installing 8-/9-/10-speed cassettes on Shimano Road freehub bodies requires a 1.85 mm spacer.Gearing:8-/9-/10-/11-/12-speedFlange Distance (L/R):55.7 mm (35.35 mm/20.35 mm)Partial Bolt Circle Diameter (L/R):44 mm/45 mmManufacturer Number:E-FHRS770C
12 x 142 mm / 32 hole / Shimano:
Over Locknut Dimension:12 x 142 mm thru-axleSpoke Hole Count:32 holeFreehub:Shimano RoadNote:Installing 8-/9-/10-speed cassettes on Shimano Road freehub bodies requires a 1.85 mm spacer.Gearing:8-/9-/10-/11-/12-speedFlange Distance (L/R):55.7 mm (35.35 mm/20.35 mm)Partial Bolt Circle Diameter (L/R):44 mm/45 mmManufacturer Number:E-FHRS770B
12 x 142 mm / 36 hole / Shimano:
Over Locknut Dimension:12 x 142 mm thru-axleSpoke Hole Count:36 holeFreehub:Shimano RoadNote:Installing 8-/9-/10-speed cassettes on Shimano Road freehub bodies requires a 1.85 mm spacer.Gearing:8-/9-/10-/11-/12-speedFlange Distance (L/R):55.7 mm (35.35 mm/20.35 mm)Partial Bolt Circle Diameter (L/R):44 mm/45 mmManufacturer Number:E-FHRS770AContents:1 x Shimano FH-RS770 rear hub