SPL
SPL Parts SPL TRE NAMR NA/NB Miata Tie Rod End Kit - Bumpsteer Adjustable (Manual Rack)
SPL Parts SPL TRE NAMR NA/NB Miata Tie Rod End Kit - Bumpsteer Adjustable (Manual Rack)
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ATTENTION
Before you can continue, you must agree to all of the following terms:
The RM Series is comprised of a damper cartridge secured within a threaded outer body. This specific design requires a lubricating grease to be applied during the assembly process between the two damper and threaded body to avoid metal-to-metal contact. In order to keep the two components from touching each other and generating noise transmission you will need to periodically clean out the old grease and apply new grease.
This is a simple process that can be done with just a few common tools. It does not require you to open the internals of the dampers themselves and therefore you do not need to have the dampers re-pressurized after carrying out this procedure. Please contact us on info@mlperformance.co.uk for more information and a step-by-step guide on how to complete this maintenance.
As a result of this required maintenance, we do not recommend the RM Series for road use over the BR Series or ER Series.
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Fitting service at Xatrix, Surrey
We can offer a fitting service for this part. Contact us for a fitting quote.
The SPL NA / NB Miata Tie Rod Kit allows for bumpsteer adjustment by allowing the tie rod end pivot to be relocated with the use of spacers on Miatas with the factory manual steering rack. This results in less dynamic toe change (aka bumpsteer) as the suspension compresses (bump) during cornering and over rough roads, resulting in more predictable handling, less tire shoulder wear, and better stability over rough roads and track curbing.
Benefits
- Bumpsteer Correction
- Lightweight: 2.52 lbs (1.14 kg) per Side
- Precise Dynamic Geometry, Stability, and Handling
- Reduced Front Tire Toe Wear
- Maintenance-Free, US Made, PTFE-Lined FK Bearings
Materials
- 6061-T6 Aluminum Turnbuckle
- 4140 Chromoly Steel Tapered Stud
- 304 Stainless Steel 1/8" and 1/4" Spacers
- Anodized Titanium Hardware
- FK PTFE-lined Spherical Bearings (Self-cleaning, US Made)
Noise, Vibration, and Harshness (NVH)

The SPL tie rod ends are not a significant contributor to NVH. They improve the driving experience by reducing bumpsteer on uncorrected cars.
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Featured On
"Greta", the Race Invaders / AR Motorsports Track Miata

Sold as a pair.
Confirmed Applications
1989-1997 Mazda Miata (NA) with OEM Manual Rack
1999-2005 Mazda Miata (NB) with OEM Manual Rack
POWER STEERING
We also have a tie rod end kit for Miatas equipped with power steering racks. If you are running a disabled power steering rack you'll need to use the power steering version of the kit that corresponds to your chassis:
Installation Instructions
Feel free to contact us at info@mlperformance.co.uk should you wish to double check!
To ensure the part(s) you have ordered fits your vehicle, we run a compatibility check prior to dispatch. We can do this either using your registration number (UK) or the last 7 digits of your VIN. Simply enter your car details prior to checkout.
SPL TRE NAMR
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SPL Parts

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