Kyosho W5312-38 Springs (Φ1.2x5x44/3.8/2 units)

Refine your Ultima RB7.5's suspension response with these performance-tuned springs engineered for racers seeking firmer damping characteristics. The slightly stiffer 3.8 rate offers enhanced support while maintaining the precise 44mm length for consistent installation.

Key Features

• Tighter coil spacing - 5mm diameter for progressive resistance

• Firm response - 3.8 spring rate handles aggressive driving

• Matched pair - Two identical springs included

• Track-proven - Developed for RB7.5 competition use

Why Upgrade to These

• Better weight transfer - Improves cornering stability

• Reduced bottoming - Handles big jumps with control

• Precision-matched - Consistent performance across both springs

• Easy tuning - Swap without modifying other components

Technical Details

• Wire thickness: 1.2mm

• Coil width: 5mm

• Free length: 44mm

• Rate: 3.8

• Finish: Anti-corrosion coating

Tuning Applications

• High-grip track surfaces

• Heavier driver setups

• Technical courses requiring precise control

• Paired with thicker shock oil

Give your RB7.5 the competitive edge with these firmer springs that deliver more controlled handling when you need maximum suspension support.