The Shimano Dura-Ace HB-7710-R is a purpose-built track rear hub from Shimano's top-tier Dura-Ace Track 7710 groupset. Engineered for velodrome racing and fixed-gear riding, it delivers the bearing smoothness and precise power transfer that competitive track cyclists demand. This is the 36-hole, single-thread variant — NJS approved and built to perform at the highest level of the sport.

Highlights

• NJS approved: The 36-hole model carries the NJS (Nihon Jitensha Shinkokai) mark, certifying it for competitive keirin and track racing in Japan and internationally.
• Cup and cone bearings: Precisely machined cup and cone bearing races with stainless steel balls deliver ultra-smooth rotation and allow field adjustment for optimal preload.
• Low-flange design: Lower flange profile reduces weight and complements a variety of spoke lacing patterns for a balanced, responsive wheel build.
• Single-thread sprocket mount: Single-side fixed threading accepts a standard track cog and lockring — ideal for dedicated fixed-gear track bikes.
• Dura-Ace build quality: Alloy hub shell with a high-polish silver finish and black decals; machined to the exacting tolerances of Shimano's flagship component line.
• Includes track hardware: Ships with one NJS-approved lockring and Dura-Ace track nuts.

Construction

The HB-7710-R hub shell is machined from aluminium alloy and finished in polished silver — a classic aesthetic that reflects its track racing heritage. The bolt-on M10x1.0mm axle provides a solid, rattle-free connection suited to the high torque demands of track sprinting. Cup and cone bearings are standard on this hub; when used outdoors they benefit from regular cleaning and adjustment to maintain optimal performance.

Compatibility & Fit

Frame spacing (over locknut dimension): 120mm. Axle: M10x1.0mm bolt-on. Spoke holes: 36H. Sprocket mount: single-side fixed thread. This hub is not compatible with freewheels or cassette bodies — it is designed exclusively for fixed-gear track use. Pairs with any standard track frame accepting a 120mm rear hub. Weight: 298g (±5%).