Riaction Coilovers for Porsche 997 C2 & C4 (2005–2011) Traction Plus Ultra with 32 Way Adjustable Dampers

Fitment Information

• Porsche 997 Carrera 2 / 4 (2005, 2006, 2007, 2008, 2009, 2010, 2011)

Note:

• Riaction Coilovers are performance lowering coilovers. You can not raise the car or keep it at OEM height with these coilovers. Unless otherwise noted, expect the coilover kit to lower your vehicle from a minimum of 1" to a maximum of 3". Spring rates are pre-set for balance and performance; contact support for customization options.

Specs & Features

• Front Camber Plates: No
  • Requires reuse of OEM upper mount
    
• 32-Way Adjustable Dampening – Fine-tune your ride from soft to stiff with ease.
• 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
  

Product Description

Refine the dynamic balance of your 2005-2011 Porsche 911 Carrera 2 / 4 (997) with Riaction Traction Plus Ultra coilovers. Engineered for rear-engine performance platforms, the TPU system enhances braking stability, improves chassis composure through high-speed sweepers, and delivers more predictable rear-end behavior under load.

Traction Plus Ultra is built around our new digressive piston design, developed to provide firm low-speed damping for improved roll resistance and sharper steering response while transitioning smoothly at higher shaft speeds to maintain compliance over surface irregularities. On the 997 chassis, this translates into improved weight transfer control and increased confidence when pushing at higher speeds.

Each kit features a nickel-coated shock body for long-term corrosion resistance and durability. The hex screw preload collar locking system ensures consistent spring preload under repeated load cycles and aggressive driving conditions. Signature orange-coated non-MacPherson components add both protection and a distinctive performance finish, while pillowball upper mounts are included where applicable to increase steering accuracy and suspension articulation.

Every Traction Plus Ultra system is backed by our 2-year factory warranty.

Redline360 is a direct and authorized Riaction dealer.  Buying Riaction products from Redline360 ensures your warranty is valid.