The RPM Associated Rival MT10 Rear A-Arm Set is an optional upgrade for the stock plastic arms. Whether bashing or racing, RPM A-arms are the toughest A-arms on the market so a rough landing or a hit from your buddy won’t ruin the fun. Made in the USA and designed with unmatched performance, exceptionally lightweight materials and extreme durability, RPM A-arms will outperform and outlast the competition!NOTE:RPM72182 replaces the front A-arms from stock Associated ASC25804. Sold in pairs.