Set Madison EV1 – Track / Fixed Gear Hubs

General Description

The Set Madison EV1 is a hub set designed for track and fixed gear bicycles, intended for urban use and competition. The hubs are machined through multiple processes from round aluminum 6061 bars (not forged) and comply with international track hub standards. The set supports fixed and/or free cog configurations depending on the version, maintaining compatibility with common frames and components available on the market. The full black finish is obtained through an anodizing process (not paint), a treatment that helps reduce surface wear and corrosion, preserving color and finish under intensive use without altering tolerances.

Adjustment Type

Fixing system: hex nut

Nut size: 15 mm

Nut material: SAE 1045 steel

Surface treatment: chrome-plated

Additional component: floating washer

System compatible with track and fixed gear frames with horizontal dropouts.

Bearings

The bearing system uses low-friction 6000ZZ shielded bearings in both the front and rear hubs. These bearings ensure smooth and stable rotation with low internal resistance, maintaining consistent mechanical behavior in urban use and competition conditions.

Technical Specifications

Front Hub

Over locknut distance: 100 mm

Flange diameter: 70 mm

Axle type: solid

Bearings: 6000ZZ shielded

Rear Hub

Over locknut distance: 120 mm

Flange diameter: 70 mm

Configuration: fixed / free depending on version

Fixed cog thread: 1.375" x 24 TPI (35 mm)

Free cog thread: 1.375" x 24 TPI (35 mm)

Thread for 14–15T free cogs: 30 mm x 26 TPI

Lockring thread: left-hand ISO 33 mm (1.299")

Bearings: 6000ZZ shielded

Weights

Front hub: 230 g

Rear hub fixed–free: 310 g

Rear hub fixed–fixed: 320 g

Rear hub free–free: 300 g

Main Materials and Finish

Hub shell: aluminum 6061 machined from solid bar (not forged)

Color and finish: black, obtained through anodizing process (not paint)

Axles: SAE 1045 steel

Nuts: SAE 1045 steel with chrome plating

Washers: steel, floating type

Bearings: steel, 6000ZZ shielded

Load Limit

Maximum combined rider + bicycle weight: 120 kg