A computer monitors engine RPM, then feeds the information to a servo motor. The motor in turn adjusts the exhaust valves for optimum timing and maximum horsepower across the entire powerband. Yamaha engineers also made the power valve system self cleaning, preventing carbon buildup and valve sticking problems sometimes experienced with competitive systems. Another SRX exclusive is a new air management system designed to control air flow from intake to muffler for maximum performance. There's an advanced air flow design within the crankcase engineered to optimize scavenging efficiency and horsepower, and large-diameter triple exhaust pipes are shaped for efficient exhaust flow and maximum power.
Plastic skis are light in weight and enhance sidehilling.
Large-diameter speedometer and tachometer are easy to read. Large-capacity heat exchangers help optimize cooling. 15-plate drive chain is designed to handle the power of the SRX engine. I automobile racing, enhance performance and durability. Plastic suspension wheels are lightweight and efficient.