MrMiata

Mazda MX-5 Miata · Body & chassis

Miata NA NB Soft Top ReplacementFree

MrMiata house reference

Replacing a soft top on an NA or NB is a full weekend job the first time, but it is entirely DIY with hand tools. The single biggest decision is whether your replacement top includes a bonded rain rail, because that dictates how much of the old top you strip.

Start by lowering the top and removing the interior trim: the seatbelt-side quarter trim, the plastic sail covers, and the two rear seatbelt-tower caps. This exposes the staples and screws holding the top's rear edge.

Tension is everything. Fasten the header while the top is slightly warm and pulled firmly forward so the latches engage under load; a top installed slack will flap, leak, and wrinkle. Leave a new top latched shut in the sun for a day or two to let the material relax into shape.

Inspect and clear the top drains while everything is apart. Blocked drains back water up into the rain rail and rot the floors, which is the most common hidden rust source on these cars.