Riaction 1989-2005 Mazda Miata MX-5 NA / NB Traction Plus Ultra Coilovers
SHIPPING - RETURNS - WARRANTY - CANCELLATION POLICY
*** Market Conditions after 2020 have changed the landscape of automotive parts. Although we try to stock 1000's of items in our multiple warehouse and use multiple distribution channels, having back-orders are unavoidable in today's market. If you are in need of a product quickly, we suggest email, message, or call us for availability so that we may explore your options.
Email: Sales@Speedzoneweb.com
Call: 407-846-8430
Text: 407-749-6314
Frequently Asked Questions
Bring sharper response and controlled balance to your 1989-2005 Mazda Miata MX-5 NA / NB with Riaction Traction Plus Ultra coilovers. Designed for lightweight rear-wheel-drive roadsters, the TPU system reduces body roll, stabilizes braking behavior, and delivers more predictable rotation through tight corners and rapid transitions.
Traction Plus Ultra is built around our new digressive piston design, engineered to provide firm low-speed damping for improved steering feedback and stronger roll resistance while maintaining compliance as suspension velocity increases. On the NA/NB chassis, this results in flatter cornering, improved mid-corner consistency, and more stable weight transfer without overwhelming the car’s naturally balanced character.
Each kit features a nickel-coated shock body for corrosion resistance and long-term durability. The hex screw preload collar locking system secures spring preload during repeated spirited driving. Signature orange-coated non-MacPherson components add durability and a distinctive performance finish, while pillowball upper mounts are included where applicable to maximize steering precision and suspension articulation.
Every Traction Plus Ultra system is backed by our 2-year factory warranty.
🔧 Traction Plus Ultra Coilover Features:
Full-Length Ride Height Adjustment
32-Level Damping Adjustment
New Digressive Piston Valving
Mono-Tube Damper Design
Nickel-Coated Shock Body for Corrosion Protection
Hex Screw Preload Collar Locking System
Signature Orange Coating on Non-MacPherson Components
Pillowball Upper Mounts (When Applicable)
44mm High-Flow CNC 6061 Aluminum Piston
CNC 6061 Aluminum Floating Piston
Polyurethane Oil Seals
SAE9254 Cold-Wound Performance Springs
Multi-Thickness Valving Shims
Low-Gas Pressure Internal Design
7.5w Compounded Suspension Fluid
Fully Rebuildable Coilover Assembly
⚙️ Factory Spring Rates:
Front: 8K
Rear: 6K
📧 International Orders:
For international shipping inquiries, please email us at info@riactionshocks.com
Preserve the lightweight driving character of your 1989-2005 Mazda Miata NA/NB while gaining modern damping control with Traction Plus Ultra coilovers from Riaction Performance Shocks.
Our History
For 26 years Speedzone Performance LLC has been providing aftermarket car parts to Central Floridians and 1000's of customers online. What makes us different than all the other places online? We have 3 actual brick and mortar locations where were serve customers daily and find new ways to provide support and assistance to the automotive community at large. From our in house SPDZ1 Brand, to our constantly growing in stock inventory, we strive to make our customer service and ease of purchase stand out from the rest! We are also one of the largest automotive part financing providers anywhere in the United States, and continue to provide more options for our customers every year. We love what we do, and it shows in every product we sell and every new customer who becomes a part of our Speedzone Family.