Z Coaster® SPIRAL RETAINING RING 
Description
RACE SPLINE DRIVE SPROCKET-19MM
-CNC machined from 7075 Aluminum in the USA!
-Requires no sprocket bolt. Instead, it has a hardened CrMo steel insert in that matches up to the 48 splines on the crank axle for pure, direct power transfer.
-Available for 19mm splined axles only.
-3/32″ tooth width for use with most BMX race chains.
-Supplied with 19mm splined steel insert.
Sizes: 36t, 37t, 38t, 39t, 40t, 41t, 42t, 43t, 44t, 45t
Colors: Silver, Black, Red, Blue, Gold
Weight:
36t: 140g/4.9oz
40t: 150g/5.25oz
45t 172g/6.05oz
**NOT COMPATIBLE WITH PROFILE RACING ELITE CRANKSET**
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.
