JUN flywheels are about 200% stronger when compared to normal flywheels. It was forged using Chrome-molybdenum steel. The power of inertia rotation can be decreased by reducing the excess weight, and its strength is directly leads to high response. JUN Ultra Light Weight Flywheel is targeted to customers who want higher RPM for their highly modified engines. This flywheel is also designed to be strong as well as light-weight, and forged using Chrome-molybdenum steel. Advantage of making a flywheel light If a flywheel is to be light, it is said that the engine response improves. With revolving things like a flywheel, the power (inertia power) is always going to continue fixed rotation. When the accelerator is stepped on in from an idling state, a flywheel tends to keep an idling state according to its inertia power, although the engine is going increase RPM. When inertia power becomes large, more time is needed for the RPM to rise. In the case of the JUN lightweight flywheel, since weight (especially flywheel perimeter part) is light, there is little inertia power influencing the RPM of engine. Since RPM response is increased, the response improves. Weight, Strength, Balance JUN light weight flywheel is made to the optimal weight and optimal form which were set up for each type of a car from the chrome forge material. By shaving all circumference of the chrome forge material, the variation in weight and the deviation of balance are kept to a minimum. The surface is processed for increased durability and heat treated. 2001M-T016MSRP: $490.00MTR sale price: $453.99 Thank you for shopping Manic Tech Racing.