Wehrli Custom Fabrication is an Industry Leader in Duramax Turbo Kit's and Custom Parts. On the Forefront of Turbo Kit Development we strive in producing the Best Product on the Market. You can rest assured that with the Purchase of our kit you will receive the Best Quality Product, Fitment, Customer Service, and Performance for your Truck. Whether it be to outfitting your truck with our popular s400 over stock Twin Kit, or if you’re looking for Four Digit Horse power numbers, we can handle it.

With more Turbo Kits in stock than any of our competitors, you can put your hard earned dollars to work sooner with our basic kits available to ship within 1-2 Days. (Uncoated Kits can ship same day) With thousands of turbo kits produced here in house since we started, we can speak with assurance that you'll be Satisfied with our product. 



Contact Us Today!

Wehrli Custom Fabrication

417 Borden Ave

Sycamore, IL 60178


Office Hours:

M-F 8:30-5:00

Saturday By Appointment


Phone 630-277-8239

Sales: Sales@wcfab.com


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