Yamaha YXZ Uniball

Upgraded Replacements for Yamaha Boxed A-Arms VortexUTV put immense effort into perfecting these A-arms, resulting in unparalleled strength, style, and functionality. One area of particular focus was the ball joints, which are often a weak point in stock setups. To address this, AtlasPro arms are equipped with a 4130 chromoly uniball, paired with a stud that is 140% larger than the original equipment. This combination results in A-arms that are truly Battle-ready. It is worth noting that the uniball studs utilized by VortexUTV are a substantial 17.9 mm in diameter, a significant increase compared to the standard 12.7 mm ball joint stud. With this robust construction and precise heat treatment, these uniballs are an impressive 400% stronger than the factory ball joints.