YUSA tuned muffler and header- 46 size - ultra light weight and rare
 

I have a rare tuned pipe and header for sale .
YUSA Model YA 4021.
I Purchased this back in 1997 to fit my OS FX and SF 46 engines.
Not manufactured anymore and sort after for climb and glide events by many club members back in the last decades.
Pipe type .... Thin Aluminum
Pipe weighs 3 oz's ...36cm length x 3cm diameter
Header weighs 1.8oz ..approx 10cm length.