RER31798 Portal Overdrive & Underdrive Gear Set

The RER31798 Portal Overdrive & Underdrive Gear Set is a drivetrain tuning kit designed to replace the stock portal gears in compatible Redcat Ascent‑18 series vehicles. This complete set of hardened steel gears allows you to adjust the gear ratios at each portal axle for optimized performance — providing overdrive in the front for increased wheel speed and underdrive in the rear for added torque and controlled climbing ability. The varied tooth counts included in the set offer flexibility in tuning how the front and rear wheels respond during crawling and trail runs. Manufactured from durable steel, these gears offer improved strength and wear resistance over stock components in demanding off‑road use. This part is ideal for hobbyists looking to enhance traction and drivetrain response through customized gear ratio tuning.

Features

• Complete portal overdrive and underdrive gear set for Redcat Ascent‑18 series vehicles

• Includes hardened steel gears with multiple tooth counts for tuning options

• Enables overdrive in front portals to increase wheel speed

• Enables underdrive in rear portals to increase torque and climbing ability

• Helps improve traction and power delivery in crawling and technical terrain

• Durable steel construction for strength and wear resistance

• Ideal upgrade or replacement set for routine maintenance or drivetrain tuning