Hot Rod Sled Shop Inc- Ski-doo REV GEN4 900 TURBO Clutch Kit for Turbo Dynamics Flash 195 HP & 205 HP ECO FLASH or equivalent. This Kit offers really quick acceleration with quicker backshift and on/off throttle response while maintaining correct rpm with the added power. The kit includes our new for 2020 HRSS-PDM2 adjustable clutch weights which are billet chromemoly steel machined, hardened and nickel plated and have 20 grams of adjustment. The primary spring & secondary compression spring is our H5 spring material which is the highest quality springs in the industry that will not fade or take a set but will have consistent performance for thousands of cycles. We changed our it from last year by switching to a compression secondary spring as did Ski-doo for 2020 models. You can order our kit with our HRSS torsional secondary and our kit helix is drilled for torsional adjustment if you prefer and we would include a torsional secondary if notated in the "notes" at checkout. If not noted it will ship with a compression spring. The kit has been extensively tested and compared to many other kits and weights and found to offer the best performance in the industry. The kit includes the HRSS-PDM2 Weights, H5 primary spring, H5 secondary compression spring with Delrin washers, HRSS helix, and extensive instruction sheet for 195 & 205 HP tunes from TD for our adjustable weights. Several customers are running our kit with HURRICANE tunes as well. We also have gear & chain kits to complement different styles of riding and speeds desired.