[Modena]

I wouldn't think this would be a problem - underbonnet temps reach maybe 70 degrees I think, even if it's higher and closer to 80-90, this air temp is very low compared to the temps experienced by the fluid in the caliper! My theory is as long as there is an air-gap of at least several itches between exhaust and brake hard-lines it will be fine. I guess you would want a larger gap for flexible lines or they may perish early.