The OEM steel spacer is twice the weight and corrodes, change to the replacement Titanium option that does not corrode.
The spacer is situated behind the front sprocket and is very simple to replace by removing the sprocket bolt pulling the sprocket off while the chain is still fitted, slide the spacer off and replace with the Racetorx version, reinstall the sprocket back on the shaft and torque the sprocket bolt up to 40nm.
