Honda Civic SI FC (17-21) Traction Plus Ultra Coilovers

Refine chassis stability and cornering consistency in your Honda Civic SI FC with Riaction Traction Plus Ultra coilovers. Designed for modern front-wheel-drive platforms, the TPU system reduces body roll, improves braking composure, and delivers more predictable front-end grip during spirited driving. Traction Plus Ultra is engineered around our new digressive piston design, providing firm low-speed damping for stronger roll resistance and clearer steering feedback while maintaining composure as suspension velocity increases. On the FC chassis, this results in flatter cornering, improved mid-corner stability, and smoother weight transfer through rapid transitions. 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 under repeated high-load driving. Signature orange-coated non-MacPherson components add protection 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: XXX Rear: XXX 📧 International Orders: For international shipping inquiries, please email us at info@riactionshocks.com Deliver controlled handling and improved chassis balance in your Honda Civic SI FC with Traction Plus Ultra coilovers—engineered performance shocks from Riaction Performance Shocks.