I've got a 2002 F650GS that came with a Two Brothers exhaust which is quite loud.
I found a used OEM exhaust that had both rear mounted pieces and what appears to be an intact catalyst. I installed both sides on the bike. It was noticeably quieter but it was also really hot. It heat soaked my pannier racks and the rear sub-frame to the point of not being able to touch them.
The exhaust from the the head pipe near the left peg to the cat area will reach 250 degrees F within 5-10 minutes of just idling.
How normal is this? Is it likely a plugged cat? Are there any good ways to bypass the cat? Is this junk and should I simply scrap it?

I found a used OEM exhaust that had both rear mounted pieces and what appears to be an intact catalyst. I installed both sides on the bike. It was noticeably quieter but it was also really hot. It heat soaked my pannier racks and the rear sub-frame to the point of not being able to touch them.
The exhaust from the the head pipe near the left peg to the cat area will reach 250 degrees F within 5-10 minutes of just idling.
How normal is this? Is it likely a plugged cat? Are there any good ways to bypass the cat? Is this junk and should I simply scrap it?
