Hubs

For optimum wheel strength and reliability, Shimano's Dura-Ace Rear Freehub is made of cold-forged aluminum with an oversize shell, sturdy flanges, a titanium freewheel body and a 15mm internal axle. Inside, diamond-polished bearing races and stainless-steel ball bearings minimize rolling resistance, while high-tech seals keep out water and dirt for maximum durability. This hub also features tool-free bearing adjustment for easy maintenance, plus a light and strong aluminum/steel quick-release skewer.

Shimano Alfine SG-S7001 Disc Brake Internally Geared Hub delivers an impressive gear range, spread across 8 speeds, all with the reliability and low maintenance you can only get with an internally geared hub. - Center Lock Disc Rotor Compatible - Rotor lockring not included - Hub Center to Flange: 30.0mm - Hub Drilling: 32-hole - Flange Diameter: 92.5mm - Drivetrain Speeds: 8 - Spoke Interface: J-Bend

Shimano's Track Dura-Ace Hi-Flange Hubs build up into stiff, fast spinning wheels that want to sprint right out off the line. Stainless steel bearings and Borozon treated bearing races minimize drag for maximum efficiency and speed. You get your choice of single or double-sided cog threading. - Weight: 313 grams

Shimano's Dura-Ace Track Hi-Flange Hubs build up into stiff, fast spinning wheels that want to sprint right out off the line. Stainless steel bearings and Borozon treated bearing races minimize drag for maximum efficiency and speed.

Shimano XT M756 front hub. - Double contact sealing - Super polished bearing races for low friction rolling - Light alloy QR lever and nut - 6-bolt ISO disc mounting surface