Docol R8 State-of-the-Art Advanced High Strength Steel

Extensive research, consultation with testing engineers, and discussion with other race car fabricators led Competition Motorsport to be the first to transition fabrication of our bolt-in roll bars and harness bars from 4130 CrMo (chrome-moly) to Docol R8. Docol is a modern, engineered Dual Phase Advanced High-Strength Steel (AHSS), replacing 4130 as the state-of-the-art material for race car chassis and safety cage manufacturing. 4130 has been the default tubing material for race car chassis since its introduction during WWII. However, racing fabricators are switching to Docol R8. Engineered specifically for motorsports applications, it is an improvement over 4130 in every way.

DOCOL R8 ADVANTAGES

• Docol is considerably stronger than 4130 CrMo. Tensile Strength of 116,000 psi vs 95,000 psi, Yield Strength of 100,000 psi vs. 75,000 psi.
• Docol's heat-affected zone (HAZ) is much smaller, meaning much less joint embrittlement from the heat of TIG welding.
• Docol has a higher resistance to fatigue.
• Docol is much more tolerant of heavy fabrication (such as tube bending and forming).
• Docol is far more dimensionally consistent, with tube diameter variance of 0.3% vs. 10.0% in 4130 and wall thickness variance less than 1/3 that of 4130.

In a CMS roll bar, that translates to higher strength, better protection, and more longevity. Docol can absorb greater impact energy while maintaining its structural integrity, remaining intact better than 4130 CrMo. Docol is the new state-of-the-art material in race car fabrication.

Is Docol more expensive than 4130? Yes, but our prices are lower, in many cases, than competitors made from 4130 or even mild DOM (drawn-over-mandrel) steel. We believe in delivering a superior product, with more choices, at a better price. That's why we design and manufacture every roll bar in-house. It's why we professionally powder coat them, in your choice of color, on-site for free. It's why we use advanced materials like Docol. And why we ship every roll bar to your door for free.

The result is superior quality, service, and value. You can pay more for a roll bar, but you can only get the best from CMS.

CHECK OUT CMS ROLL BARS HERE

If you want more info, give us a call at (844) 438-7244 or drop us an email at sales@competitionmotorsport.com. We're happy to discuss which roll bar is right for you!