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How to Go About Upgrading Your Brakes

“Jack of all trades, master of none” is a pretty good description of OE brake system designs.

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Can You Upgrade Your Dampers by Replacing the Oil Inside?

We decided to put one of our favorite rumored speed secrets to the test.

How to Execute DIY Track Testing Like a Pro

You don’t have to be Consumer Reports—or even GRM—to conduct your own product tests.

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Aerodynamic Trailblazers: How RHR Performance Wings It

We talk to a company that considers itself a pioneer in the early days of "real" aerodynamics.

From the GRM Vault: A Grassroots Guide to Braking Systems

A plain-talk primer on your car's braking system.

Shock Basics

How they work and how to make them work for you.

From the GRM Vault: Ten-Cent Chassis Alignment

How to construct your own string alignment machine with budget materials.

Wing It: Simple Talk on the Complex Subject of Aerodynamics

Whether sleek, boxy or somewhere in between, all cars interact with the air while racing down the track.

Suspension Snafus

6 Common Setup Mistakes That May Be Costing You Performance

Featured makes: Mazda
How to Modify the ND-Chassis Mazda MX-5: Tips From Good-Win Racing

We posed a simple question: What are the three most important modifications to make?

Featured makes: Mazda
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