Disc Brake Rotor and Freewheel 17 mm ID with 4 mm key way and two set screws.

Be sure and order the 4mm key if you need it.

NOTE:  If you need the larger 6mm key way cut you MUST add this item to your cart and we will re cut the
key way to the larger 6mm key or to the 5mm key way.

Re cut Key way to larger size

It has a dual purpose by attaching a Disc Brake Rotor and Freewheel with 1.375 x 24 RH tpi. 

The Disc Brake rotor will attach with three 6mm x 1.0 x 12 mm long Socket Head Cap Screws on the left side of the adaptor.  Be sure and order these if you need them.

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.