From racing to the real world.

The SDG Spring Kit transforms your suspension with the same engineering that’s won over 70 championships and 300 race victories. Designed and tested by the Suspension Development Group team in El Cajon, California, each kit delivers measurable gains in ride control, comfort, and reliability — whether you’re chasing podiums or carving trails on the weekend.

⚙️ Key Benefits

- Optimized Spring Rates: Balanced for performance and comfort — sharper turn-in, better small-bump compliance, and reduced body roll.

 - Race-Grade Components: Built from high-tensile steel and precision-ground for consistent preload and travel.

 - Improved Bottom-Out Resistance: Handles G-outs, jumps, and chop without harshness or fade.

 - Set-and-Forget Setup: Each kit includes recommended preload and ride-height specs tailored to your vehicle class and terrain type.

 - Serviceable & Upgradeable: Compatible with OEM and aftermarket shocks; engineered for easy future tuning or revalving.

🧠 Why SDG

SDG kits are developed using verified data and real-world telemetry from desert racing, short-course, and prerunner testing.
Every spring rate, crossover, and preload spec is chosen by the same engineers trusted by professional race teams — so you get track-tested precision in a bolt-on package.

🔧 What’s Included

 - Matched front and rear coil springs

 - Detailed setup and preload guide

 - Optional installation and tuning services through SDG’s California HQ

🔍 Technical Highlights

📦 Ideal For

 - UTV owners upgrading from stock springs

 - Racers needing compliant yet controlled travel

 - Overlanders carrying gear, passengers, or load weight

Choose your vehicle above — your perfect spring rate and ride control start with the right fit.