Aprilia Billet Race Slave Cylinder Clutch Actuator RSV 1000 R NERA Made from Heat Treated Aluminum [6061 T6] / 100% CNC Machining Anodize Finish / Reduces Clutch Lever Effort by 35% / Everything included for Installation [instructions as well] Dramatically Decreases Rider Fatigue [most notably at track/race days] / Enhanced Breather Hole and Seals 30.5mm Inner Piston Bore / Smoother Clutch Action Includes: (1) Clutch Slave Cylinder (3) Stainless Steel Bolts (2) Copper Crush Washers