Ebaiy has them. 1.5k is the yellow I have installed in my 1 speed. Slip ur 1st gear with the 1k blue to hit the pipe sooner, then 2nd gear slip that shift with yellow or red. Prolly be hitting on the pipe the whole time if u have a proma or similar. That’d be rad if u could dial it in to hit the pipe twice. Dammet! Now I wanna play with a 2 speeder :)
if u figure the express tops out at 42mph +/- kitted, then getting it to shift at 25-32 is doing alright. I needs a few transmission guts if u know of someone parting out, keep a look out and lmk thanks!