Disc Brake adaptor with 17MM ID with 4mm keyway & two set screws. 

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

Drilled with Six 5mm holes with the 44 mm Six hole disc brake pattern.

We have pictured a couple of different styles of Disc Brake rotors that are NOT included.

Steel & Zinc Plated.  2.10" OD x .80" wide.

You also will need:

Six:  5mm  x .80 x 30 mm Socket Head Cap Screw, Black  # 4116
Six:  5mm x .80 Z Nylock Hex Nut  # 0404