The Profile Spider Spline Drive BMX 4 Bolt works with most 3-pc chromoly cranks and 48 splined 19mm spindles (made with offset for outboard bottom bracket - Profile). Allows you to use 4-Bolt chainrings, with the 104mm bolt pattern for 4-bolt chainrings.
 
Spline-Drive Spiders slide directly onto 48 splined 19mm spindles and do not require a gear bolt to attach to crank arm.
 

 

 

-Machined from billet aluminum plate.

-Supplied with a CrMo Steel adapter insert already pressed in.

Avilable in 19mm or 22mm option

Weight:
4-Bolt: 74g/2.6oz

-Machined from billet aluminum plate.

-Supplied with a CrMo Steel adapter insert already pressed in.

Avilable in 19mm or 22mm option

Weight:
4-Bolt: 74g/2.6oz

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.