We provide the good stuff - Priced Right

The Chassis Shop stocks a large inventory of chromoly tubing and plate for all your fabrication needs. We've been specializing in supplying 4130 to car builders, and racers for over 35 years - we've learned a lot about tubing.

We offer a very large selection of premium quality round chromoly tubing, and specialty shapes. Our focus is on offering only premium domestically drawn 4130N tube. Occasionally we have material produced in Germany - which has proven over time to be very satisfactory also.

We do not offer any Asian produced Chromoly; it does not bend, weld or perform the same as the DFARS compliant 4130 tube - and we prefer to support our families and neighbors that make up the American manufacturing supply chain whenever possible.

For more technical info - keep reading.

Our round chromoly tube is 4130 condition N, built and certified to exceed MIL-T-6736B specs. This material is produced by the Cold Drawn Seamless (CDS) method, and is in the Normalized condition.

The 4130 alloying elements include Chromium and Molybdenum, and for that reason it is often referenced by many different variation of names; chrome moly, chrome alloy, ProMoly or just 4130 CDS tube to name a few.

4130 alloy steel tube is one of the most widely used steel tubing in the construction of Chrome Moly round tube race car chassis and roll cages.

We work hard to bring you the best value for your hard-earned dollar. Premium Chromoly tubing the way you want it - the Chassis Shop leads the way in providing all your fabrication needs in one call.

What's so special about 4130 tube?

Performance industries using 4130 tubing:
  • Drag Racing
  • Circle Track
  • Off Road
  • Road Race
  • Rally Car
  • Karting
  • Motorcycles
  • Bicyling

Some of the many uses for Chromoly:
  • Tube Chassis
  • Roll Cages
  • Control Arms
  • Linkages
  • Tie Rods
  • Wing Struts
  • Body Mount Supports

How's it Chromoly tubing measured?

Tubing dimensions:



Note: Welding should always be performed by a qualified welder.

Click links below to learn more: