The Excel Takasago aluminum alloy rim is the benchmark in off-road racing rim technology. Every Excel Motocross rim is engineered and designed to perform in extreme hostile environments where other rims routinely fail. Fact, Excel has won more Motocross and off-road championships - worldwide - than all competitors combined! Part of the secret is in Excels exclusive 7000 series aluminum alloy which has a 50% higher yield strength than the competitors 6 series aluminum. Also, the exclusive know-how in extrusion design, complex multi-step forming, advanced robotics welding, and in hard anodizing such a tough and complex material is key to Excels strength and world market dominance. Aluminum alloy which has a 50% higher yield strength than other aluminum rims. Excel MX rims are the choice of all Factory Works and Privateer Teams worldwide. Rim Specifications: Rim type: Rear. Rim size: 18". Note: Rim only, spokes sold separately.