NHRA. Roll bar and cage specs

RebStew at 06h57
31
Aug
2010
NHRA. Roll bar and cage specs

If the floor and/or firewall has been modified, then a full roll cage is required beginning at a 10.99 e.t. A full roll cage is required in any vehicle running 9.99 seconds or quicker, and any vehicle running 135 mph or faster (regardless of e.t.). The roll cage must be constructed of minimum 1 5/8 o.d.x .118 mild steel tubing, or 1 5/8 x .083 chrome moly tubing, and must conform to the following diagram:


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31/08/2010 at 06h57 by "RebStew"