These are a super durable alternative to the "disc" style clutch, it will hit fairly hard and hold really well with less maintenance than typical disc set ups. It will also be much more tolerant to low speed on off engagements of the clutch common in back yard or trail riding.

Orange springs included so these will hit at 3000 rpm with full engagement at 3200, please see spring charts for tuning guide and parts break downs (springs are available separately)

Note: this is the stamped drum version in a 40/41/420 chain set up