YX600 - Radian - 4 into 1 Kerker Exhaust

Kerker doesn't make these anymore. Salvaged this one off my 1987 Rad. The system is great for reducing weight, but not increasing power. If fact I think I lost a few horses on the top end of the power band. It's just a little too loud, so will have to experiment on the noise level.

One thing I like is not rubbing my left heel on the stock muffler with my big cloddy foot.