Profile Racing Galaxy Sprocket

Spline drive sprockets eliminate the need for a sprocket bolt by sliding directly onto the splines of your crank axle. This creates a more secure, direct connection that prevents the sprocket from slipping or loosening during hard landings and heavy pedaling.

This sprocket is specifically designed for 22mm crank axles with a 48-spline interface. Before purchasing, verify that your crankset is compatible with a 22mm spline drive system, as it will not fit standard bolt-drive cranks or different axle diameters.

Yes, 7075 aluminum is an aerospace-grade alloy known for its high strength-to-weight ratio. When paired with the hardened CrMo steel insert, this sprocket is built to handle the impacts and torque typical of aggressive street and freestyle riding.

Yes, this sprocket features a 1/8-inch tooth width, which is the standard size for most single-speed BMX and freestyle chains. It is fully compatible with standard 1/8-inch chains, including both half-link and traditional styles.

No special tools are required. Because it is a spline drive system, you simply slide the sprocket onto your crank axle splines until it is flush against the crank arm. It is a straightforward, tool-free installation process.