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Mazda
Spec Miata Moves to Penske Shocks

Spec Miata, one of the most popular road racing classes in American amateur motorsports, is about to see a big change for 2019

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From the GRM Vault: How to Drive Faster With Slow Hands

Pro driver Randy Pobst has some tips to make you a faster driver.

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.

Mazda
Suspension Snafus

6 Common Setup Mistakes That May Be Costing You Performance

From the GRM Vault: How to Tune Your Suspension With a Tire Pyrometer

The most useful piece of suspension tuning equipment is a tire pyrometer.

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