The right sound. The right power.

Make CHECKS PAYABLE to Spiral Turbo Specialties
You can order by sending payment to:

 Spiral Turbo Specialties
 PO Box 186
 Seville, Ohio 44273.

  Money orders and Cashiers Checks are accepted and can be sent to the contact information .
 Please include your shipping address, and vehicle application, Telephone Number, Email address. on all orders.

All Semi-Truck orders. Contact Grand Rock, Inc. Painesville, OH 800-321-3674 ask for Bill or Paul for specific application information. Test results, and pricing.