2016 570 SP 2-up 1000 km/620 miles on it

Posting this for my brother…..He had wrapped his header and exhaust with titanium wrap (but installed his heat shield over it). After a quick ride we noticed a red glow coming from the engine area, looked closer and seen a couple of missed spots glowing red hot (temp gun showed temps around 450c/870f). Thinking that can’t be normal he removed the wrap, took it for a ride and it came back glowing red again….Is that normal? Should he be worried?