Check the listing for details. MST RMX 2.5 Gear Differential (60T). Condition: New. Listed at 36.99 USD. New in package MST RMX 2.5 Gear Differential (60T) RMX 2.5 Gear Differential. This optional gear differential is designed to replace the stock ball differential and allow more tuning for the RMX 2.5. Features:Factory Optional Gear DifferentialAllows For More Tuning Options Includes:(1) MST RMX 2.5 Gear Differential Vehicle models vary. We DO NOT guarantee this will fit the vehicle specified in this listing!Verify that this item is appropriate for your vehicle. Consult your manual or vehicle manufacturer.Verify vehicle fit-ment before purchase.Returns will only be accepted on items that are returned in new, factory-sealed packaging. Used, damaged (unless damaged when it arrived to you), and opened items will not receive a full refund. Any and all warranty claims will be handled through the manufacturer directly.