started my xtx yesterday in the garage, just to let it warm up for a bit, but after 5 mins at tickover i noticed the right hand side exaust downpipe was starting to glow a cherry red colour!! the other one was fine. bike is bog standard 07 model with original pipes. anyone got any idea whats wrong? dont know if its done it before, just noticed it as it was nearly dark. cheers T

they do glow, but are you sure that both headers weren't glowing ?

__________________
2008 XTR Mods : DNA Stage 3 Airbox, PC111, Carbon Cans Ovals, Steve Ruth built XTR734cc Big Bore with - High Desert Dyno (HDD)/ Cuervo Racing Gas Flowed / Ported Head fitted with +1mm Valves & uprated Springs, HDD 5050 Camshaft, HDD +3mm Throttle Body, CP 105.5mm 11:1 Piston, Custom Mapping, Piasini ECU, Renthal 613-01, Barkbusters VPS, Pivot Pegz, Touratech Bashplate, Foam Grips, Kev's O2 Sensor Mod, Kev's Extra Coolant Cooler, Wilbers Progressive Fork Springs and Rear Shock

the other header looked ok but i,ll check again at the weekend. thanks

Doesn't sound out of the ordinary. I wouldn't leave any vehicle standing to 'warm up' anyway. Start it up and ride off, ride carefully for about 5kms in order for it to warm up properly.

__________________

There is nothing wrong with the headers glowing, its fine and wont hurt it at all.

__________________

+1

happens with all bikes if run in the dark and not moving, - would expect both headers though.

__________________
Work hard, rock hard, eat hard, sleep hard, grow big an wear glasses if you need em.