I'm not understanding how these work. Wouldn't changing the front and rear gear ratios just cause the truck to bind?

Good question. If you were to drastically change the front and rear ratio (super overdrive front and rear), it would cause issues but not bind. The slight increase spin of the front tires causes the truck to pull more front the front, instead of push more from the rear. This is very helpful when going over obstacles and on hill climbing

12t 22t Overdrive And 24t 10t Underdrive Steel Helical Gear

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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33591CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

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Description

⚡ Upgrade your crawl game with precision and power!

SILENT STRENGTH - Helical gear design drastically cuts down noise and vibration for a premium driving experience.
BUILT TO OUTLAST - Alloy steel construction resists wear far better than stock plastic gears, keeping you ahead of the pack.
TERRAIN MASTERY UPGRADE - Optimized overdrive and underdrive ratios boost crawling and steering on complex terrains.
PLUG PLAY INSTALLATION - Easy fitment for TRX4M front or rear axles—upgrade your RC crawler in minutes.
PRECISION ENGINEERED POWER - CNC machined alloy steel ensures unmatched durability and smooth performance.

This 12T/22T overdrive and 24T/10T underdrive helical gear set is CNC machined from durable 20CrMo alloy steel, designed to replace stock plastic gears on TRX4M 1/18 RC crawler cars. It reduces noise and vibration while providing a 9% overdrive to the front axle and a 16.7% underdrive to the rear axle, enhancing steering and crawling performance on challenging terrains. Easy to install, this upgrade is recommended for users aged 14 and above.

Specifications

ASIN	B0BZLBWSRV
Age Range Description	Kid
Best Sellers Rank	#101,911 in Toys & Games ( See Top 100 in Toys & Games ) #45 in RC Vehicle Transmission Gears
Brand Name	INJORA
Color	Black
Customer Reviews	4.4 out of 5 stars 214 Reviews
Educational Objective	Game, play
Item Dimensions	3.9 x 0.79 x 2.8 inches
Item Weight	0.02 kg
Manufacturer	INJORA
Manufacturer Part Number	4M-10-34B
Manufacturer recommended age	0 - 5 years
Material Type	Steel
Model Number	4M-10-34B
Number of Players	1
Operation Mode	Manual
Set Name	Overdrive & Underdrive Gear Set
Size	12/22T&10/24T
Theme	Car
Unit Count	2 Count

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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33591CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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12T/22T Overdrive & 24T/10T Underdrive Steel Helical Gear for TRX4M

Description

Specifications

Common Questions