Xray’s new high-torque clutch set for the XB9 is an important performance upgrade. The clutch provides a smoother and more continuous transfer of power from the engine at very high RPM. The clutch engages higher in RPM range, resulting in more controllable power during acceleration, while still maintaining good handling and performance on jumps. The updated design engagement profile also gives extended clutch life. The new flywheel has smaller diameter but increased weight. Thanks to the smaller diameter the flywheel is more protected above the chassis so after huge jump there is a reduced chance for engine stoppages when the car lands on a rock or other obstacle. The increased weight of the flywheel results into more balanced operation of the engine. The new clutch shoes are smaller, lighter and designed for engagement during the entire travel of the shoe. The shoes are less sensitive to wear and as such life time is increased.