HPI Optional Nitro Racing Clutch for the Super Nitro RS4 and Nitro MT Kits. This clutch is constructed of black nylon. This product includes two clutch shoes. One spring and one instruction sheet. The clutch shoes have three mounting holes for three different adjustments.
-First set-up is mounted in the first hole in the clutch bell, this allows the clutch to engage at low RPM's for smooth acceleration.
-Second set-up is mounted in the second hole in the clutch bell, then the excess clutch bell is removed (the first mounting hole is cut off), this allows the clutch to engage at higher RPM's for more bottom end.
-Third set-up is mounted in the third hole in the clutch bell, then the excess clutch bell is removed (the second mounting hole is cut off), this allows the clutch to engage at higher RPM's for even more bottom end, and is good for high bite tracks.