The PROFILE Spider BMX 4 Bolt are super popular amongst racers. 

-This bolt on style spider is for use with Profile Racing 3-Piece Race Chromoly Crankset with a standard sprocket bolt and 19mm (.75″) BB axles.

-Chainring can be mounted on inner or outer face of spider for chainline adjustability.

-Works best with the Profile Internal Bearing Euro BB, American BB, MID BB, or Spanish BB.

-Will only work on 19mm axles.

Weight:
4-Bolt: 65g/2.27oz
 

** Please note, due to Profile's anodising process, colours can be slightly miss matched.

For over 35 years, Profile Racing parts have been the top choice for all types of BMX riding. Profile Racing is the single largest, most capable and most sophisticated manufacturer of high-end BMX bicycle components in the United States.