All Balls Racing – CV Axles & Axle Kits, including 8 Ball rear left axles for the 2015 Polaris Hawkeye 325 2x4 and 11-14 Hawkeye 400 HO 2x4, a 6 Ball rear left axle for the same Hawkeye 400, a front inner U-joint for the 00-02 Polaris Xplorer 250 4x4 and a front left 8 Ball axle for the 2019 CF-Moto U Force 1000. These are complete, greased and booted assemblies, so a shaft with a shredded boot or a joint that clicks under load comes out and a full unit goes in. Six-ball joints match stock plunge and angle on lighter utility quads, while eight-ball joints spread torque across more contact points for machines running bigger tires or hauling weight. Once grit gets past a boot, the joint wears oval, driveline slop shows up as a clunk on throttle, and the abuse moves into the differential and hubs. Fresh CV axles and U-joints restore smooth power delivery at full suspension travel and quiet the whole driveline down. Grease the splines on install and the shaft comes out clean next time. Corner and joint reference numbers matter, so tell us the year, model and position and we will confirm the correct axle assembly before you order.