STRENGTH: The first belt utilizing carbon tensile cord for minimal stretch and extraordinary strength FLEXIBILITY: High-performance neoprene with a trapezoidal topnotch and rounded bottom cog design maximizing heat control and flexibility DURABILITY: Carbon tensile cords are bonded to aramid fiber-loaded rubber with specially formulated adhesion gum, resulting in increased side-load resistance, preventing belt distortion and edge cord pullout PERFORMANCE: Gain optimal power transmission for faster acceleration, improved throttle response and consistent shifting performance If your machine is over 800cc, consider G-Force Redline belt G-Force C12 belts were the first belt utilizing carbon tensile cord for high modulus and extraordinary strength. This high-performance Neoprene and aramid fiber-loaded rubber belt o ers Original Equipment technology. The advanced carbon tensile cords are surrounded by specially formulated adhesion gum to reduce edge cord pullout and increase belt life.