Editing Mini 4WD (section)

==Upgrading==
Because of the modular design, nearly all the components can be swapped and change the performance of the vehicle.  This allows the owner to customize the performance of the vehicle to the particular track.

Higher specification motors can be used to replace the standard FA-130 type motor.  There are three specifications that characterize all motors: [[Revolutions per minute|RPM]], [[torque]], and power-consumption.<ref name="TechTips">{{cite web |url=https://www.tamiyausa.com/mini4wd-techtips/ |title=Mini 4WD Racing Tech Tips |publisher=[[Tamiya Corporation|Tamiya USA]] |access-date=2022-03-07}}</ref> RPM is the speed the motor provides, and the torque its strength. A higher RPM means higher maximum speed, higher torque gives more acceleration and allows the car to better withstand the difficulties of climbing slopes or running through turns.

Gears can also be replaced with sets with different ratios.  Common ratios include  (3.5:1), (3.7:1), (4:1), (4.2:1), (5:1), and "Special" (ratio varies but is usually 6.4:1). The higher the ratio, the better the acceleration rate and torque; the lower the ratio, the better the maximum speed.<ref name="TechTips"/>
[[File:9 Classic Mini 4WD.jpg|left|thumb|'''9 modern Classic Mini 4WD''']]
In a standard car, the left and right wheels are on a fixed axle.  Special one-way wheels can be added to allow the left and right wheels to rotate at different speeds acting as a [[Differential (mechanical device)|differential]], to allow for improved cornering performance.<ref name="About Mini 4WD"/>

In addition, upgrade parts such as bumper width extensions, stabilizers, and brakes can be added that aid in the car's performance through corners, banked turns, elevation changes, and jumps.<ref name="About Mini 4WD"/><ref>{{cite web |url=https://www.tamiyausa.com/blog/what-tamiya-mini-4wd/ |title=What is Tamiya Mini 4WD? |publisher=[[Tamiya Corporation|Tamiya USA]] |access-date=2022-07-25}}</ref>