Push stems
19mm spline drive sprockets
22mm spline drive Galaxy sprockets
Here is Profile's Spline Drive sprocket, in 19mm to fit any 19mm 48-spline spindle crank. This ensures a nice snug fit and should finally eliminate that annoying up-and-down you get in your chain and of course is required if you are running bossless cranks.
NOTE: Spline drive sprockets are not compatible with 2-piece cranks for Right Side Drive (not enough room for splines). Spline drive sprockets are compatible on Left Side Drive 2-piece cranks though.
• The brand new Profile Spline Drive sprocket is manufactured from 7075 Aluminum in the USA.
• This sprocket requires no sprocket bolt, instead it has a hardened CrMo steel insert in that matches up to the 48 splines in your Profile BB spindle.
• These can be used with all 19mm 48s spline cranks but Profile have some specific no boss Profile Cranks for a clean look and lighter set up.
• 1/8 Teeth