Category
page 1Vehicle modifications
car tuning
modification of an automobile's performance
Racing slick
type of tire used in auto racing
nitrous oxide engine
automotive accessory equipment
retrofitting
Retrofitting is the addition of new technology or features to older systems. Retrofits can happen for a number of reasons, for example with big capital expenditures like naval vessels, military equipment or manufacturing plants, businesses or governments may retrofit in order to reduce the need to replace a system entirely. Other retrofits may be due to changing codes or requirements, such as seismic retrofit which are designed strengthening older buildings in order to make them earthquake resistant.

chip tuning
reprogramming a car to improve performance
rain tyre
Tyres used in wet weather
pin striping
thumb|right|250px|Pin striping on a motorcycle fuel tank.

racing stripe
vehicle decoration
Hood scoop
Opening for air to enter car engines
Hydrogen fuel enhancement
process to to improve fuel economy, power output, or emissions
Body kit
optional body modifications for a car
Continental tire
externally-mounted spare tire behind an automobile's trunk