Miata Drain Defender Kit: Fix Your Miata’s Drain Problems for Good (NA/NB 1990–2005)
Table of Contents
This kit will solve all of your Miata’s drainage needs
Stop your Miata from rotting away right under your feet — Literally. The Drain Defender Kit from Lots of Projects gives you peace of mind by protecting the drainage passages in NA/NB Miatas: the A-pillar drains, the fender drains, and the rear rain rail drains.
This kit is a complete solution for keeping these drain paths clear while installing in minutes with no tools needed. Fits 1990-2005 Mazda Miata.
Fender Drain Screens
The front fenders on Miatas are notorious for holding debris and rusting from the inside out. Most owners don’t notice the damage until it’s too late. These 3D-printed screens prevent leaves and debris from collecting in rust-prone areas — and they install in seconds, with no tools or fasteners.
These screens use a compliant mechanism incorporated into the design. That means instead of hinges or clips, the flexibility is designed directly into the part. Just flex it open, snap it onto the factory sheet metal, and you’re done.
Made of PETG for long-lasting durability.
Rain Rail Drain Screens
The rear soft top drains (aka rain rail drains) often clog because of their narrow water channel. Even a few small leaves can back up the drain and send water soaking into your interior carpet. If left unattended, this will cause mold to grow in the interior that is very difficult to clean.
The rain rail screens in this kit drop directly into the factory drain opening. They feature a ribbed geometry that helps them lock securely onto the thin plastic surface to ensure a rattle-free experience.
A-Pillar Seal Spacers
Does your seat get wet from the A-pillar? That’s often caused by the door compressing the weatherstrip too tightly, collapsing the internal drain channel.
This kit includes support spacers to keep that drain passage open. Water flows where it’s supposed to — down the A-pillar, not into your seat bolsters. Three different-sized spacers are included so you can find the perfect fit for your car.
The spacers snap off of their card and simply press into place inside the factory A-pillar seal.
This kit prevents:
- Rusting fenders
- Moldy interior
- Wet seats and carpets
- Clogged drainage passages
All components are 3D printed from weather-resistant PETG and designed to last longer than the car itself. Everything installs without tools. This kit fits all 1990–2005 Mazda Miatas (NA and NB).
Kit Includes:
- Front Fender Drain Screens
- Rain Rail Drain Screens
- A-Pillar Support Spacers
🏁 Wait… But What If It’s a Racecar?
We get it — every ounce counts. Luckily, the Drain Defender Kit weighs only about 2oz total.
Unfortunately, it will also stop your Miata from continuing its natural weight reduction process… aka rusting itself back into the earth.
But hey, clean drains = faster lap times. Probably.
📦 Ready to Defend Your Drainage System?
If your Miata lives outside or sees any kind of regular driving, you owe it this protection. Don’t wait until your fender has rusted through or your carpets start to stink.
🛒 Order the Drain Defender Kit now → Drain Defender Kit
Fits all NA and NB Miatas from 1990–2005. Ships fast. Installs in minutes.
Have questions? Drop a comment or check out the installation video for a full walkthrough.
Video Install Guide: Lots Of Projects Drain Defender Install Video
Preserve your Miata — before it’s too late.
💡 Amazon Tool Recommendation
We recommend using a trombone cleaner to clean your Miata’s rain rail drain prior to screen installtion. Order yours here: Trombone Cleaner
Flexible Nylon Trombone CleanerBuy on Amazon
