Boss Bearing 42-1015B Ball Joint Kit Lower / Upper Honda ATV

The Boss Bearing 42-1015B ball joint kit is available in both upper and lower positions, delivering precision-engineered, OEM-matching front suspension performance across Honda's most trusted ATV and side-by-side UTV platforms spanning nearly three decades of production. The lower position covers the TRX420 Rancher IRS and Solid Axle from 2014 through 2026, TRX450ES and S from 1998, the full TRX500 Foreman and Rubicon series including IRS and Solid Axle variants, the TRX520 lineup from 2020 through 2026, the TRX650 and TRX680 Rincon, and the TRX700 Rubicon from 2024 through 2026. The upper position extends that coverage significantly — adding the full Honda Pioneer 500, 520, 700, 700-4, 1000, and 1000-5 side-by-side lineup from 2015 through 2026, earlier TRX350 Rancher models from 2000 through 2006, TRX400 Rancher 4x4 from 2004 through 2007, and TRX420 models starting from 2007 rather than 2014. Built to meet or exceed OEM specifications for a direct drop-in fit with no modifications required, this kit restores factory-correct suspension geometry and the stable, confident handling that Honda's utility ATV and side-by-side lineup is known for delivering mile after mile. Refer to the fitment table to confirm the correct position for your specific model before ordering.