Silber produces the best turbo kit for the Polaris Pro Ride/Rush chassis. Period. This kit enters its 4th generation, providing the rider with true pull and go reliability, unprecedented performance and outstanding dollar for dollar value. Key features include a cutting edge ceramic ball bearing turbo, rider friendly ECU-reflash and ability to run pump or race gas depending on boost level/elevation. Installation takes about 4-5 hours with this 100% bolt on kit. No welding, cutting, grinding or additional modification to the sled.