Upgrade your 1/10 scale RC crawler with this tough all-metal gearbox from ZXYRC. Designed specifically for Axial SCX10 and SCX10 II chassis with a 313mm wheelbase (note: may require shortening the rear driveshaft on other frames like the Wraith). It's fully constructed from CNC-machined aluminum and steel gears for maximum durability under heavy load. The gearbox includes a 20T steel pinion and 87T steel spur gear, with an internal gear ratio of 2.6:1 and a final drive ratio of 11.31:1—great for slow, controlled crawling with plenty of torque. The sealed aluminum cover helps keep dirt and debris out, ensuring smoother, quieter operation and longer component life. The package includes the complete transmission and a screw set for installation. This is a serious upgrade for hobbyists who want to replace plastic parts with metal for better performance and reliability on the trails.