Madison EV1 Set  Allen Adjustment

General description

The Madison EV1 Set – Allen Adjustment is a hub set designed for track and fixed gear bicycles, suitable for urban use and competition. The hubs are machined through multiple processes from solid round bars of 6061 aluminum (not forged) and comply with international track hub standards. The set allows fixed and/or freewheel configurations depending on the version, maintaining compatibility with standard frames and components available on the market.

The full black finish is achieved through an anodizing process (not paint), a treatment that improves resistance to surface wear and corrosion while maintaining dimensional tolerances and surface finish under intensive use.

Axle adjustment system – Allen adjustment

Adjustment type: Allen

Axles: machined with internal hex sockets on both ends

Socket depth: 30 mm

Adjustment bolt:

Diameter: 6 mm

Thread pitch: 1

Length: 25 mm

Tool: 5 mm Allen key

This system provides precise axle fixation and compatibility with track and fixed gear frames with horizontal dropouts.

Bearings

The bearing system uses low-friction 6000ZZ sealed bearings on both the front and rear hubs. These bearings ensure smooth and stable rotation, low internal resistance, and consistent mechanical performance in both urban riding and competitive use.

Technical specifications

Front hub

Over locknut dimension (OLD): 100 mm

Flange diameter: 70 mm

Axle type: solid

Bearings: 6000ZZ sealed bearings

Rear hub

Over locknut dimension (OLD): 120 mm

Flange diameter: 70 mm

Configuration: fixed / free depending on version

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

Freewheel thread: 1.375″ x 24 TPI (35 mm)

Freewheel thread for 14–15T: 30 mm x 26 TPI

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

Bearings: 6000ZZ sealed bearings

Weights

Front hub: ~210 g

Rear hub fixed–free: ~270 g

Rear hub fixed–fixed: ~290 g

Rear hub free–free: ~260 g

Materials and finish

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

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

Axles: SAE steel

Adjustment bolts: steel

Bearings: steel, 6000ZZ sealed

Load limit

Maximum combined weight (rider + bicycle): 120 kg