See: 6MIK

6MIK have introduced their new Optima CS400 4-shoe clutch system for 1/8 buggy. The CS400 4-shoe clutch system is designed to increase the traction, make the car more easily to drive even in extreme conditions and provide lower consumption. The 4-shoe clutch features two aluminium black shoes (heavy with little contact surface) to bit early but not completely, and two aluminum gold shoes (light with a full contact surface) to bit later but completely. No break-in is required because the shoes have the perfect profil to suit the clutch bell. The springs are positioned inside the shoes prevent them from heating and limit the wear of the clutch and the pins are screwed for easy maintenance.

The flywheel is fitted with holes to unlock the engine during break-in and avoid scratching your CS400. The CS400 4-shoe clutch system is available in red and black colors in 32mm and 34mm diameters, uses standard size Clutch bells (internal ø 26.5 mm) and comes with 0.8 / 0.9 / 1.0 and 1.1 mm springs.