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M4 F8x BMW harness bar / 1/2 roll cage 


Our bolt-in harness bar is essentially a 6 point bar. It has been TIG welded out of 1-3/4” DOM tubing. We use the additional strength of the rear seat beam. It meets NASA and SCCA rules for HPDE/TT events.

The rear section is connected via Chromoly interlocking tube clamps and bolts to the rear strut structure  (4 bolts on each side) and utilizes OEM bolt holes. The front is bolted to seat beam and OEM seat belt holes.

No welding/drilling or steel cutting required.  Fully reversible. A 4" straight carpet cut is required to hide the two base plates (all flanges out of ¼” high tensile steel laser cut). Invisible once you remove harness bar! Or you can fold the floor carpet as pictured w/o any changes to car.

The entire bar weighs 73lbs. Due to removal or heavy rear seats and cushions the net added weight is negligible.

The rear trunk clearance is 13" so you can load tires through trunk opening, see picture.

Please note that all our products and recommendations are not street legal and are for race-track-use-only!

Use this harness bar only on race track and ONLY in combination with proper 6-point race harness, helmet and Hans devise! 

Please request lead time.

Lead time approx 2 weeks after email confirmation unless in stock.
Powder coating in any standard single layer color (please provide RAL code). See RAL color code link. Multiple layer colors need to be quoted (please send color code).

Flat shipping fee via YRC truck to your door to main continental states $250, select during check out.

BMW M4 F8x harness bar / 1/2 roll cage

  • All parts and components are strictly for race-track only and are NOT street legal. We do not recommend the use of our parts on public roads!

    Use the harness bar only in combination with a proper 6-point race harness, approved helmet and Hans devise! 

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