@rescaria: BMW S1000RR, redlined until the exhaust glows. Sustained high-rpm runs like this push exhaust gas temperatures high enough to make thin-wall headers glow red hot, something usually only seen on track under extended hard use with a race exhaust. The S1000RR's 999cc inline-four hits peak power at 13,200 rpm, and moments like this are exactly why headers on high-performance bikes are built from titanium or stainless rather than mild steel. Media: @tharley_rodriguess IG