Interior

NA Miata MX-5 Stainless Cup Holder and Phone Holder

A proper solution to a classic Miata problem. If you’ve ever stuffed your drink between the passenger seat and the rear bulkhead, you’re not alone. That’s the “factory cup holder” in most NA Miatas. But now there’s a...

Weighted Shift Knobs (Multiple Thread Pitches)

Prices include shipping within the USA and Canada. International shipping rates are calculated at checkout. Introducing R Theory Motorsports Weighted Shift Knobs! Weighted shift knobs are a cost effective modification that improves the smoothness/feeling...

NA/NB MX-5 Miata Delrin Window Bushings (1990-2005)

Prices are in USD and include shipping within the lower 48 States and Canada. All mounting hardware is included. For international shipping please visit our International Shipping page for a shipping quotation.If your windows are slow/hard to go up and...

NA/NB MX-5 Miata R Theory Motorsports Full Side Mount Seat Bracket (1990-2005)

Prices include shipping within the USA and Canada. International shipping rates are calculated at checkout. Behold, R Theory Motorsports' full seating solution for mounting a race seat in your NA/NB Miata. Everything is made out of 1/8" thick Laser Cut...

NA/NB MX-5 Miata R Theory Bottom Mount Seat Bracket (1990-2005)

Prices are in USD and include shipping within the lower 48 States and Canada. All mounting hardware is included. For international shipping please visit our International Shipping page for a shipping quotation. R Theory Motorsports now offers a seating...

NA/NB MX-5 Miata Side Mount Seat Brackets

Prices include shipping within the USA and Canada. International shipping rates are calculated at checkout. R Theory Motorsport Race Seat Brackets allow you to mount a Side Mount Racing seat onto NA/NB Miata stock rails. A great option for those who...