Tune your FM-A chassis by altering the gear ratio. These gears are an easy way to increase the speed of your machine. This set includes gears to achieve five different ratios (3.5:1, 3.7:1, 4:1, 4.2:1 and 5:1)!

• 1.4mm Hollow Lightweight Propeller Shaft x1
• Reinforced 8T Pinion and G-2 Gears x2 each
• 620 Ball Bearing x1
• Fluorine Coated Gear Shaft x1
• Compatible with FM-A, Super X and Super XX chassis cars.