this is what WCR said on a different fourm
"Just wanted to let you guys know we have been working on a new Banshee transmission for some time now called the extreme dunable. We think the extreme dunable is our greates creation yet. The rules are very simple with this transmission, THERE ISNT ANY. Ride it anyway you want to. Yes you herd right. This transmission can be up shifted, down shifted, backloaded AT ANY RPM with out damaging a shift fork. You can TT race it, hill climb it, circle track it, moto cross it, drag race it, No matter what your style of riding or racing this transmission will work for you.
This transmission will come with a 1 year warranty. I will also warranty the shift forks for 1 year. Shift forks must be approved by me and will come with a number stamped on them to keep us all honest lol.
We can upgrade any banshee transmission as well. All precut WCR transmission will get 20% off the upgrade.
We will only be making these transmission's in a 1-4 m/5-6, 2-4 m/5-6, 1-5 NO 6th and 2-5 no 6th.
We are putting them out there at 420.00 for the 4 speed and 475.00 for the 5 speeds"