Underdrive Gear Overview:
The Injora Redcat Ascent-18 Underdrive Gears (12T/29T) are an upgraded gear set for theAscent-18 micro rock crawler platforms. These gears reduce the rear wheel speed relative to the front, improving climbing control, reducing torque twist, and enhancing traction for better off-road performance.
About the Underdrive Gear
 
Performance & Durability
Underdrive gears improve climbing control by slowing the rear wheels, allowing the front to pull the vehicle over obstacles and reducing the risk of flipping. They also reduce torque twist, enhancing stability on uneven terrain. The slight difference in wheel speeds improves traction and steering response, aiding in tight turns and rock crawling. Additionally, underdrive gears put less strain on drivetrain components, extending their lifespan.
Features:
improves climbing performance and steering response when used in the rear axle
Better Climbing Control
Reduced Torque Twist
Provides greater strength than factory straight cut gears
Improved Traction and Steering Response
Less Strain on Components
Includes:
(1) Underdrive Pinion Gear (8T)
(1) Underdrive Ring Gear (20T)
(4) Shims