Suspension and Chassis

NA/NB MX-5 Miata Adjustable Swaybar Endlinks - One Pair

Prices include shipping within the USA and Canada. International shipping rates are calculated at checkout. R Theory Motorsports Miata Sway Bar Endlinks have a great range of adjustability, look great, and are built to last! At its shortest length, it...

NA/NB MX-5 Miata Frame Rail Cross Brace Additions (1990-2005)

*Prices are in USD, and include shipping within the Lower 48 States and Canada. For international shipping please visit our International Shipping page for a shipping quotation.Add some stiffness to your existing Frame Rail Braces! These Frame Rail...

NA/NB/NC/ND MX-5 Miata Delrin Door Bushings (1990-present)

Prices include shipping within the USA and Canada. International shipping rates are calculated at checkout.Best bang for the buck chassis stiffener mod for your MX-5 Miata! These units replace the stock rubber door bushings on your Miata with solid...

NA/NB MX-5 Miata Frame Rail Brace Backing Plate Kit (1990-2005)

Prices include shipping within the USA and Canada. International shipping rates are calculated at checkout. Click here to purchase the NA/NB Miata Frame Rail Braces without the Backing Plate Kit. R Theory Frame Rail Brace Backing Plates are designed to...

NA/NB MX-5 Miata Front Sway Bar Mount Reinforcement Blocks (1990-2005)

Prices include shipping within the USA and Canada. International shipping rates are calculated at checkout. Let's face it, the OEM front sway bar mounting points on NA and NB Miata's could have been better. When engineers are designing a car they always...

NA/NB MX-5 Miata Frame Rail Braces (1990-2005)

Prices include shipping within the USA and Canada. International shipping rates are calculated at checkout.CNC Laser cut and bent out of 304 Stainless Steel, these braces help tie together one of the flimsy weak spots of the Miata's chassis; the "mushy...

Universal Sway Bar Adjuster - SBA

Prices include shipping within the USA and Canada. International shipping rates are calculated at checkout.Fine-Tune Your Handling Like Never Before - Patent Pending Take control of your suspension setup with the R Theory Motorsports Universal Sway Bar...

NA MX-5 Miata Steering Rack Spacer (1990-1997)

Prices include shipping within the USA and Canada. International shipping rates are calculated at checkout. No one likes bump steer, all lowered Miatas are susceptible to bumpsteer due to changed suspension geometry. R Theory’s Steering Rack...

NC MX-5 Miata Adjustable Swaybar Endlinks

Prices include shipping within the USA and Canada. International shipping rates are calculated at checkout. The NC Miata is a masterpiece of balance, but achieving true perfection means taking control of the details. That’s where R Theory...

Universal Adjustable Swaybar Endlinks (Short)

Prices include shipping within the USA and Canada. International shipping rates are calculated at checkout.   R Theory Motorsports Miata Sway Bar Endlinks have a great range of adjustability, look great, and are built to last! Our endlinks use high...

NA/NB MX-5 Miata Front Tow Hook & License Plate Bracket Kit (1990-2005)

Prices include shipping within the USA and Canada. International shipping rates are calculated at checkout. Good things come in twos! Introducing the R Theory Motorsports Tow Hook & License Plate Bracket kit for the NA and NB Miata. What sets this...