I know a dyno tuner that runs a supertrapp on his personal bike that has 30 something plates with a closed end cap and an open end cap bolted over the top of it so he doesn't have to explain why he has a closed end cap.
This one works with discs.
this is the open end plate I ordered I ordered, pricey for what it is- https://www.easyr.com.au/supertrapp-end-cap-open-4-brushed-stainless-steel it goes under the end cap
Bike booked in for motor work Monday.... giddyup.
so I swapped in the open end cap and removed 10 disc's and it's quite a bit louder, sounds way better
Tuner sent me the baseline run of the stock as a rock 117 in the ST.
Bullshit power for the money ain't it, that head makes all the difference, wonder if you could shoehorn one onto a twin cam 😁
