I am currently building a 4 mil stroker , it’s an oem cylinder 70mm . The cylinder is done and the head is o ringed so I’m gonna be running race gas . I am gathering parts to build it this winter . Currently running a BDT ported oem cylinder on race gas and it rips . I am currently running a esr 5 pipe and silencer . My question is will my esr pipe be ok with the 4 mil engine? I know there are benefits to having a good pipe built for your bike . I mainly ride in the woods in Ohio . Is the juice worth the squeeze for a 4 mil pipe ?