Coilover Spring 16in x 3.0in x 100lb

The SWIFT SPRINGS Coilover Spring 16in x 3.0in x 100lb is a precision suspension component engineered for builders and enthusiasts seeking refined ride control and adjustable vehicle height. This 16-inch coilover spring serves as the damping and load-bearing element in coilover suspension systems, allowing you to dial in your vehicle's stance while maintaining consistent spring rates across compression and rebound cycles. Whether upgrading a street car, performance daily driver, or dedicated track build, this spring delivers the tuning flexibility that separates amateur setups from professionally engineered suspension geometry.

Manufactured by SWIFT SPRINGS—a trusted OEM and aftermarket supplier known for consistent spring rates and durability—this coilover spring features a 3.0-inch outer diameter body with a 100-pound linear spring rate. The 16-inch free length positions this spring for mid-sized chassis applications, fitting common coilover platforms used in compact sedans through mid-size performance vehicles. The 100lb/in rate balances responsive body control with compliance over street imperfections; stiffer springs improve anti-squat and anti-dive geometry while reducing body roll in cornering, but require tuned damper valving to prevent harshness. Weighing 4.55 lbs, this spring minimizes unsprung mass—critical for suspension responsiveness and wheel articulation—making it ideal for applications where every tenth of a pound counts in the vertical load path.

Buyers pairing this spring with quality dampers will unlock adjustable height and ride stiffness without sacrificing long-term reliability or component fitment. Verify chassis compatibility by matching spring seat diameter (typically 2.5-inch or 2.25-inch), ride height requirements, and target spring frequency—100lb springs typically pair with 650–850 lb damper valving on road cars, higher on race setups. Installation requires suspension disassembly and proper spring compressor tools; confirm your vehicle's weight distribution and desired center-of-gravity height before finalizing spring selection, as incorrect pairing can cause instability or premature bushing wear.