About Us

Thanks to our satisfied growing customer base of diesel enthusiasts like yourself, Wehrli Custom Fabrication has continued to make a distinct footprint in the ever-growing, competitive, diesel performance industry. Leading the way in product development and new idea’s for several years, we continue to strive and excel in offering the latest and greatest products for your diesel truck. Whether you use your diesel truck for work, play, performance, or racing, you can trust US to exceed YOUR expectations.

Where we came from

Wehrli Custom Fabrication was founded in a two-truck garage circa 2010 in Sandwich, Illinois. It wasn't long before more space was needed to continue on my dream. Acquiring a 2,400 sq ft building in a Sugar Grove, Illinois Industrial Park just a year later allowed us to really kick-start the business. With the help of my die-hard diesel enthusiast friends, family, and customers the business grew at rapid rate at our new location, eventually taking over two more adjoining units in the building for a total of 8,500 sq ft.

Just a few short years later, with our parking lot full, and work spaces cluttered, it was obvious we needed more room to continue our growth. After months of searching I stumbled upon what I believed to be a perfect location in beautiful Sycamore, Illinois just minutes from several large highways. In early 2015 we made the move into our current location, now consuming a massive 22,500 sq ft shop and office space.

Today I employ an ever growing group of hard working dedicated individuals with talents streaming across the board. Our goal is to serve you, the customer, with the highest quality product, best technical advice, and most extreme skill we have to offer.

What we do

Wehrli Custom Fabrication Inc. specializes in High Performance Diesel and Custom Metal Fabrication. At WCFab we take great pride in our reputation for providing the highest quality fabricated parts and performing repairs on your Duramax, Powerstroke, & Cummins Diesel Trucks. Since our beginning we have strived in producing the best product and service on the market, offering turbo kits and custom performance parts on many different levels for your work, play, or competition diesel truck. You can rest assured with the purchase of any of our custom fabricated, MADE IN THE USA, parts you will receive the best quality product, fitment, performance, and customer service before and after the sale. Whether you're looking to outfit your towing rig with our popular S400 Over Stock Compound Turbo Kit, or if you’re looking for four digit horsepower numbers, we can handle it.