Steel Spur Gear (64T, .6 Module)
Dimensions:
Spur gear - 42mm diameter, 6.5mm thick teeth, 5mm wide arbor hole
Pinion gear - 9mm diameter, 4.5mm thick teeth, 4mm wide arbor hole

Understanding Gear Ratios

Gearing Up
There are 2 ways to gear up which increases top speed (but decreases power and acceleration):
1). Increase the tooth count of the pinion gear,
2). Decrease the tooth count of the spur gear.

Gearing Down
There are 2 ways to gear the vehicle down for more power and acceleration (but decreases top speed):
1). Decrease the tooth count of the pinion gear,
2). Increase the tooth count of the spur gear.

Note: changing the tooth count of the pinion gear will have a more noticeable and larger effect than changing the spur gear.
Note: gearing up or down too much may over-stress the engine causing it to overheat - test engine's performance anytime gear ratios are changed.
Brand: Generic - works on many models and 1/10 scale vehicles. Check your manual for compatibility.

Note: This is a generic product; therefore, it is not endorsed by any listed brand. Check your specific model's manual for compatibility.
Recommended for ages 14 years and up. Adult supervision required.