Explore the best US websites and retailers specialising in car modification, offering performance, styling and tuning parts. Summit Racing is the go-to destination for American muscle and racing, while FCP Euro offers a lifetime replacement guarantee for European vehicles.

Here is a breakdown of the best platforms by category:

General and performance parts:

Summit Racing:

https://www.summitracing.com/

The best overall destination in the US for domestic muscle cars, truck accessories, and heavy-duty racing performance.

CARiD:

https://www.carid.com/

CARiD offers a vast digital catalogue covering almost every make and model, including exterior kits, lighting, interior upgrades, and wheels.

Jegs:

https://www.jegs.com/

A leading source for automotive performance parts, engine components, and drag racing gear.

European and import specialists

FCP Euro:

https://www.fcpeuro.com/

Known for its popular lifetime replacement guarantee on all parts, making it ideal for BMW, Audi, VW and Mercedes owners.

ECS Tuning:

https://www.ecstuning.com/

Specialises in European vehicles with a highly detailed, vehicle-specific parts finder.

Throtl:

https://www.throtl.com/

Popular with VW, Audi and Subaru enthusiasts seeking suspension, exhaust and styling upgrades.

BimmerWorld:

https://www.bimmerworld.com/

The go-to place for BMW track, street and racing performance builds.

Virtual Builders & Simulators

FormaCar:

https://www.formacar.com/

An interactive 3D car configuration website that lets you modify and visualise vehicles digitally before buying parts.

Interactive Garage:

https://www.interactivegarage.com/

Allows you to select your exact vehicle and test the fit of aftermarket accessories visually.