BSA Super 10 modified fraction longer exhaust valve
BSA Super 10 modified exhaust valve made a fraction longer than standard, for more more opening time, can also be used to set the power nearer 12 and control the lock time etc. Can be used to replace a faulty leaking exhaust valve. The R10 uses the same valve.
BSA Super 10 modified exhaust valve made a fraction longer than standard, (Suitable for use with our tuning kit) or if your gun is leaking out of the barrel. This can be checked by listening to the open bolt, (where you put the pellet in). If you can hear it hissing with the bolt open then it is usually the exhaust valve leaking. If the gun is leaking where you fill it, then it is the inlet valve leaking (R10).
Always check the power to make sure the gun does not exceed your limit, after changing any parts.