The HB-7600-R is Shimano's flagship Dura-Ace rear track hub — a hi-flange precision hub trusted by Keirin professionals and competitive track cyclists worldwide. Built to deliver exceptional stiffness and lateral spoke geometry, it pairs premium Borozon-treated bearing races with stainless steel balls for buttery-smooth, durable rotation under sustained velodrome power.

Highlights

• Hi-flange design: Larger 67mm flange diameter shortens spoke length and increases wheel stiffness for better power transfer on the track.
• Borozon-treated bearing races: Shimano's precision surface treatment produces exceptionally smooth, long-lasting cup-and-cone bearings.
• Stainless steel ball bearings: Corrosion-resistant balls paired with Shimano's adjustable cone system for consistently dialled bearing preload.
• Chrome-plated steel axle: M10 axle (164mm length) with flanged axle nuts provides reliable clamping in track dropouts.
• Standard cog threading: 1.370" x 24tpi English thread accepts any standard track cog and lockring; includes NJS lockring.
• Proven Dura-Ace Track pedigree: Part of the 7710-series group, used at the highest levels of competitive track cycling.

Design & Construction

The HB-7600-R's hi-flange shell is machined for tight tolerances, with 32 spoke holes arranged to optimise the spoke bracing angle at the 120mm rear track standard. The chrome-plated M10 steel axle threads into standard track frame dropouts with flanged axle nuts for secure, rattle-free clamping. Shimano's cup-and-cone bearing system allows field adjustment to eliminate play without specialist tools.

Compatibility & Fit

Rear hub for track/fixed-gear bicycles. Over-locknut distance (OLD): 120mm — fits standard track frames. Axle: M10 steel, 164mm length. Spoke holes: 32H. Cog thread: 1.370" x 24tpi (English standard). Supplied in single-side fixed configuration; compatible with standard track cogs and lockrings. Not compatible with freewheels, cassettes, or derailleur drivetrains. NJS lockring and flanged axle nuts included.