NCY Stage 1 Transmission Power Pack for 125cc – 150cc GY6 Scooters With an abundance of GY6 150’s on the market, a need for bolt on extra power is now available through Scooter Dynasty. Thanks to the great products from NCY, this kit includes a stainless NCY exhaust and the NCY Transmission kit. Over 13% savings had by purchasing the kit as a whole! **NOTE: Not legal for use in California on pollution controlled vehicles. Check local laws before installing.** **NOTE: The exhaust system will only work on the sporty looking scooters and may work on others with some modifications.