2.5in C/O Kit Koni 5in

The 2.5in C/O Kit Koni 5in coil-over kit from ALLSTAR PERFORMANCE delivers professional-grade suspension tuning for serious circle track and street-strip competitors. Designed for builders who demand precise ride height adjustment and consistent performance across variable track conditions, this coil-over assembly combines proven Koni shock technology with a purpose-built spring package. Whether you're preparing a bracket racer, short-track competitor, or high-performance street machine, this kit provides the foundation for repeatable handling and driver confidence.

The kit features a 2.5-inch ID spring mated to a 2-inch smooth-body shock with a 5-inch adjustable sleeve, allowing fine-tuned height and spring preload changes without disassembly. Black anodized aluminum construction resists corrosion while maintaining lightweight characteristics critical to weight transfer and acceleration. Koni's damping expertise ensures consistent shock response across compression and rebound cycles, eliminating the vague or unpredictable behavior that plagues lower-tier coil-over designs. The smooth-body shock design reduces friction and extends service life, while the adjustable sleeve accommodates various mounting points and packaging constraints common in race car fabrication.

This coil-over kit suits builders working on independent double-A-arm or strut-type suspension geometry where OEM spring rates and ride heights no longer apply. Competitors benefit from bolt-on installation compatibility with most modern chassis designs and the ability to dial in spring preload changes in the pits without tools. Installation typically requires basic suspension knowledge and standard hand tools; proper alignment checks and corner-weight balancing are recommended after setup. At 1.11 lbs per unit, the compact 5.35 x 3.6 x 5.75-inch footprint integrates cleanly into tight engine compartments and fabricated suspension mounts.