Building a reliable rear axle starts at the wheel ends. Our collection of 30 spline and 35 spline rear wheel hubs and components includes the parts needed to build, service, or upgrade high-performance axle assemblies for rock crawlers, Ultra4 cars, rock bouncers, trail rigs, mud trucks, and custom off-road vehicles.
Shop billet wheel hubs, rear axle spindles, wheel bearing kits, spindle nuts, brake conversion components, and wheel-end hardware designed for GM 14-bolt axles and custom fabricated rear axle housings. Whether you're replacing worn components, reducing rotational weight with lightweight aluminum hubs, or building a complete competition axle from scratch, these parts are engineered to withstand extreme torque, large tires, and harsh off-road environments.
Many builders upgrade to 30 spline or 35 spline wheel-end systems to improve serviceability, reduce unsprung weight, simplify axle maintenance, and increase reliability compared to factory configurations. From trail-ready axle upgrades to race-proven wheel-end solutions, you'll find the components needed to keep your rear axle performing at its best.