10 Rib Belt Drive & Crank Pulley - Corvette / Z06 - LT1 / LT4

Our 10 rib crank pulley, idlers, and upgraded tensioner with billet bracket will keep your supercharger making full boost to the end of the track!

The TooHighPsi upgraded SC Belt Drive System offers:

• 30% more peak belt tension
• 15% more belt length take up (travel)
• 48% larger tensioner shaft and bearings for robust belt control

Upgrade includes:

• TooHighPsi 10 Rib +15% or +22% lower pulley
• Billet tensioner bracket in raw aluminum or black anodized finish
• LT5 Belt Tensioner with smooth idler
• 2 each 6061 billet 10 rib idlers with high speed/load double row bearings
• 1 smooth 6061 billet idler with high speed/load double row bearing
• Bolts and necessary hardware

TooHighPsi 10 rib drive systems utilize a +2 arrangement (additional 2 ribs are forward of the standard 8 rib). 

Note: Lower pulley will not mount to stock crankshaft pulley, requires ATI damper #917315 for fitment.

Too High PSI shipping & returns

• Processing: please allow 2-3 business days. Custom items (lids, valve covers) need an extra 7-10 business days.
• Returns: new, unused and uninstalled parts in their original packaging with all components, requested within 30 days of purchase. A return authorization (RMA) is required before shipping anything back.
• Not returnable: used, installed or damaged parts, items without original packaging or missing components, and custom or special-order parts.
• Fees: 15% restocking fee on eligible returns; outbound shipping is non-refundable and return shipping is paid by the customer. Orders cancelled before shipment carry a 3% processing fee.

To start a return or ask a question, contact us with your order number.