aftermarket upgrade
Non-factory vehicle improvement
An aftermarket upgrade is a modification or replacement part installed after the original purchase, typically on vehicles or electronics.
The term distinguishes third-party or enhanced components from factory-original equipment: aftermarket upgrades like a new exhaust system or performance chip.
The upgrade implies improvement over stock specifications—better performance, appearance, or functionality.
- customizationModification to individual preference
- modSoftware tweak or admin
- performanceCarrying out a task
- tuningAdjusting pitch accuracy
- exhaustUse up entirely
suspension · bolt-on · horsepower · intake · cold air intake · turbo · wheels · spoiler · kit · headers · chip · enhancement · swap · lowered · chrome · bodykit · rims · supercharger