Overdrives Underdrive Worm Differential Axles Steel Gears 12T 13T 14T 16T 18T Racing Differential Helical Gears Set

Features: Make of Hardened Steel with black oxides hardening treatments, rustproof and wear resistant. Optional overdrives and underdrive gears for customs performances. Wheel mechanism in both front and rear differentials improving power transmission efficiency for smoother crawling High precisely machining ensures less vibrations, lower noise, and minimized wear. Fits both front and rear axles,easy to install,direct replacement or upgrade for stock parts.

Specifications: Component: Hardened Steel Number of teeth: 12 Teeth/13 Teeth/14 Teeth/16 Teeth/18 Teeth Size: As Shown in the Picture Transmission ratio and speed effect: 16T/12T=1.33 → Speed increases by approximately 33% 16T/13T=1.23 → Speed increases by approximately 23% 16T/14T=1.14 → Speed increases by approximately 14% 16T/16T=1.00 → None speed change 16T/18T=0.89 → Speed decreases by approximately 11%

Package Includes: 1set overdrives Underdrive Differential Gears

note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.