Rossier Engineering

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We founded the company in 1991 as a personal watercraft performance shop. While working on all brands initially, we quickly zeroed in on the popular Sea Doo product line. With an in-house dynomometer, we enjoyed many years of success developing and manufacturing a wide variety of high performance parts. We actively raced watercross and endurance events as a means of ensuring the durability of our products. In the late 90's, we became an official Sea Doo Factory Racing Team. We developed modular engines capable of a variety of displacements using cylinders, heads and crankshafts of our own design. We were especially successfull in the field of water injected exhaust systems. By the time watercraft racing started fading away, racers equipped with our engines and exhausts had won an incredible 16 World Championships. Now... As personal watercraft evolved into huge 3 and 4 seater boats, we shifted our engine development to the emerging ATV market. This required a significant commitment as we had to shift from 2-cycle engines to the more technically demanding 4-cycles. We installed a motorcycle/ATV chassis dyno and became proficient at cylinder head air flow management with our SuperFlow flow bench. More racers found success using our exhaust systems and breathing enhancements. We are looking forward to the challenge of developing exhaust systems, breathing improvements, and displacement increases for new models as they become available. These are exciting times for motorsports enthusiasts as there is a steady flow of newer, ever more sophisticated products coming from the OEMs. Rest assured that our dedicated staff will continue to be on the front lines, developing and selling the finest performance products money can buy.