Designed to outperform any OEM or aftermarket clutch HD clutch kit comes in a foam-lined, hard plastic case that protects clutch components from being damaged prior to installation Case can be used to store and transport parts, tools or other items after clutch installed HD kit includes friction plates and steel drive plates; does not include springs Friction plates come ready to race - no need to presoak plates in oil Exclusive high-heat friction material for fade-free performance More durable than OEM plates Steel drive plates won't expand, do not fade or promote clutch swell like stock aluminum plates Long lasting - up to 300% more life than stock plates Increased weight over stock plates adds flywheel effect for aiding starting and traction Will not muddy or contaminate oil. CLUTCH KIT HD M8