Wehrli Custom Fabrication in Sycamore, IL


Founded in 2011 by Jason Wehrli, Wehrli Custom Fab has evolved into an ever growing High Performance Diesel Shop. Now Located in Sycamore Il Expanding thru a 22,000 sq ft Facility with Qualified Diesel Mechanics, Welders, Fabricators, Powder Coaters and Diesel Enthusiasts!

For Several Years Wehrli Custom Fabrication has been an Industry Leader In Duramax Turbo Kit’s and Custom Performance Parts for Competition Diesel Trucks. On the Forefront of Performance Part Development on the LML model Duramax Trucks we strive in producing the Best Product on the Market. You can rest assured that with the Purchase of our Custom Fabricated and In house Tested Parts you will receive the Best Quality Product, Fitment, Customer Service, and Performance for your Truck. Whether it be to outfitting your towing rig with our popular s400 over stock Twin Kit, or if you’re looking for Four Digit Horse power numbers, we can handle it. Not only do we work on Duramax’s, we also have Performance Products and Techs Specializing in Cummins and Power stroke Diesels as well.


Take a look at our complete selection of diesel products!

Become a Certified Dealer for Wehrli Custom Fabrication today!