Riaction 2003-2008 Nissan 350Z Z33 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
Enhance the balance and control of your 2003-2008 Nissan 350Z Z33 with Riaction Traction Plus Ultra coilovers. Designed for rear-wheel-drive performance platforms, the TPU system improves braking stability, sharpens front-end response, and delivers more predictable rear traction during aggressive cornering and throttle application.
Traction Plus Ultra is built around our new digressive piston design, engineered to provide strong low-speed damping for improved roll control and chassis stability while maintaining composure as suspension speed increases. On the Z33 platform, this translates into better weight transfer management, improved confidence during high-speed transitions, and more consistent grip under load.
Each kit features a nickel-coated shock body for superior corrosion resistance and long-term durability. The hex screw preload collar locking system ensures secure spring preload during repeated hard 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: 12K
Rear: 8K
📧 International Orders:
For international shipping inquiries, please email us at info@riactionshocks.com
Improve chassis balance and driving confidence in your 2003-2008 Nissan 350Z Z33 with Traction Plus Ultra coilovers, advanced performance shocks engineered by 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.