The MotoGP-inspired, racetrack-ready GP1-R ($1099) is constructed of thin-wall 304 stainless steel for a weight savings of as much as 10 pounds compared to original-equipment sportbike exhaust systems, claims Jardine. What’s more, this high-flow, under-engine design is said to deliver noticeable power and torque gains throughout the rpm range and lower the center of gravity [...]