Profile 39t Spline Drive BMX Sprocket - 19mm - 48-spline - Black - USA Made 1.50 - 1.75 507mm The Sinz Expert ISIS cranks

The Sinz Expert ISIS cranks are designed to be used with an ISIS bottom bracket (113mm is recommended - not included) and 110mm rings (34T or larger only)

It hasa standard 7/8" top for use with seat guts

Diameter: 20

Upsweep: 1°

These pedals have cleats included and are designed to be used with ANY SPD type shoe

Profile 39t Spline Drive BMX Sprocket - 19mm - 48-spline - Black - USA Made 1.50 - 1.75 507mm The Sinz Expert ISIS cranksThe Profile Spline drive sprocket is CNC machined from 7075 Aluminum in the USA. This sprocket does not require a sprocket bolt; instead, it has a hardened CrMo steel insert that matches up to the 48 splines on the crank axle for pure, direct power transfer. This has 1 8 tooth width for use with most freestyle street & single speed chains. It will only work with 19mm, 48 spline 3 piece cranks. Size: 39t Color: Black This is a stock photo. You will