4.9 Roll Cage
All cars shall have a NASA CCR-compliant roll cage. Additionally,
a) Any number of additional mounting points may be used.
b) Any number of additional tubes may be used, even for chassis stiffening.
c) Any size mounting plate may be used, subject to material and minimum specifications in the
NASA CCR.
d) Two (2) forward cage braces per side (total of four (4)) may pass through the firewall and connect
at no more than two (2) mounting points in the engine compartment (i.e. strut tower or frame).
e) Tubes may be welded at any contact point, or even be seam welded. Additional material may be
used to connect roll cage tubing to chassis of car. I.E. A pillar bar may have material welded to
both itself and the A pillar of the car.
f) If modification number 4.9.5 above is utilized, an additional thirty (30) pound weight penalty will
apply.
g) All tubes that are added shall be inspected for safety reasons. Any tube deemed to be hazardous
to the driver must be removed.