Barnett B-618-30-23098 Lock-Up Pressure Plate Kit for most Big Twin 98-17 w/OEM Cable ClutchDescription for Barnett Performance Products Low Profile Lock Up Cable Pressure Plate Designed specifically to fit under stock or aftermarket primary derby covers Increases the capacity of your stock clutch and keeps lever effort to a minimum even with big inch motors Stainless steel weighted arms progressively increase pressure to the clutch as RPM's increase Three different sets of six coil springs (light, medium, heavy) are included for a wide