RBS carries a full line of 5mm oil/fuel pump drive sprockets. These are made from billet alum. and the drive sprocket uses a 1.00" bore with a .125" key and the driven sprocket uses the industry standard .625" shaft with a .187" key.
The driven sprocket also has four set screws to secure the pulley to the shaft. Pulleys are designed to be used with 1.00" wide belt.
Racer can choose pulley size from drop down menu.
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