See: 6MIK

6MIK have introduced the new Optima 4-shoe clutch V2 for Nitro Buggy and Truggy. Based on the popular Optima 4-shoe clutch, the V2 features a new design and comes with new longer springs, new shoes design including spring offset hole and a reinforced frontal screw plate. Designed to provide smooth power delivery and easy tuning, the clutch is also meant to offer exceptional durability. The 4-shoe clutch V2 is available with a 34mm or 32mm flywheel, it comes in black or red anodization and includes 0.9, 1.0 and 1.1 mm springs.