Harley-Davidson Apex Clutch: Introducing a new standard for Harley clutch systems. APEX is Rekluse's pinnacle V-twin manual performance clutch system, combining innovative design and U.S.A.-made construction. APEX delivers reduced lever effort, improved rideability, and power capability over existing clutch systems. APEX helps you maximize performance and durability with a lighter lever pull - Whether your engine is stock or fully built! Designed to reduce lever pull effort while increasing lever feel consistency. 60% increase in torque capacity and clutch engagement, resulting in improved power transfer to rear wheel. Improved clutch modulation and control. Reduce clutch operating temperatures with improved oil for longevity and consistent performance. Tunable to power needs and rider preference with interchangeable spring combinations to match engine build while minimizing lever force.