About Our Pulleys

We here at Thunder Cloud Precision, LLC take great pride in our products. In this short article we will describe the manufacturing and inspection process of our pulleys.

All of our pulleys are CNC machined from a solid billet of 6061-T6 aluminum alloy. We use CNC equipment capable of maintaining a high degree of precision. After every operation, all critical dimensions are measured using nothing but the best measuring equipment and tools available. Our belt rib dimensions conform to the ISO 9981-1998 standards for PK profile multi rib belts and pulleys. We use special form tools from a reputable and respected tool vendor to cut our belt ribs with, ensuring correct depth and profile.

We insure that all pulleys will have no more than .003 lateral TIR runout, and no more than .002 axial runout on all features. This means that the pulleys are very concentric and will run very true, eliminating any potential out of balance conditions.

All critical dimensions of our pulleys are based on the original factory Suzuki pulley dimensions for Suzuki G-Series engines. We do this to insure a proper fit, and compatibility with the original pulleys.