This 1" ID with 1/4" keyway adaptor has a dual purpose by attaching a Disc Brake Rotor and Freewheel with 1.375 x 24 RH tpi. 

This is the Adaptor ONLY.

The Brake Rotor, Freewheel Sprocket and other parts are EXTRA.  

The Disc Brake rotor will attach with three 6mm x 1.0 x 12mm long Socket head cap screws on the left side of the adaptor.

This will allow the axle to freewheel and use a Disc Brake for stopping.

CLICK HERE to order the Rotor 4.72" OD x 1.023" ID for Disc Brake.    

CLICK HERE to order the Disc Brake Assembly.

We will offer these adaptors with a 30mm x 1.0 RH threads at a later date.  If you need one, email me the size of the ID you need and how many.

Made from 12L15 steel 1.15" wide with two 6mm x 1.0 set screws, keyway and zinc plated.

You will have to order a brake lever, brake cable and make your mounting bracket to hold the Disc Assembly in place.

Our Freewheel sprocket adaptors, solid sprocket adaptors, Disc Brake and Disc Brake and Freewheel adaptors, chain sprockets, keys, shaft collars and other parts are used in the making of units for the KINETIC UNIVERSE, Kinetic Sculpture, Kinetic Grand Championship, Kinetic Race.