The Kyosho 2D Racing Clutch is specially developed for IFMAR World Championship competition and modern, high revving racing engines. This clutch has a special combination of features that produce very strong acceleration and consistent performance desired by the top racers in the world.
A new nickel-plated lightweight flywheel has a smooth, polished surface that allows the clutch flyweights to move smoothly and consistently. The red clutch shoe is the same high-grip material used in the 1:8 Evolva, which provides strong engagement with less slip, which reduces heat to provide consistent performance from start to finish. The clutch kit includes everything you need for installation – simply swap the pinion gears from your standard clutch and you’re ready to race!
Source : Radio Control Zone