This is our std heavy duty clutch kit for Banshee's that have mild engine modifications up to 70 H.P. YZF1000 street bike friction plates and springs that are 10-15% stiffer than stock. One of the keys to our clutch kit is the full size smooth steel plates. "Dimpled or textured" steel plates WILL NOT handle as much H.P. as a smooth steel plate. Dimples are concave in shape which reduces surface material causing less contact area which results in clutch slippage.