Transmission Gears (Automatic), 125cc 52mm ATVs & Dirtbikes

Automatic transmissions on 125cc 52mm ATVs and dirt bikes depend on a precise set of internal gears to deliver smooth acceleration and consistent power. When these gears wear out, riders may experience slipping, hesitation, or noisy operation. This collection includes replacement automatic gear sets designed specifically for Honda-type 125cc 52mm engines, helping restore dependable performance.