Proma-Star C/O Shock - Single Adjustable

The Proma-Star C/O Shock - Single Adjustable from QA1 is a purpose-built suspension component engineered for serious vehicle modification and performance tuning. Designed for drivers who demand precise ride control without the complexity of dual-adjustable damping, this single-adjustable shock absorber delivers repeatability and straightforward tuning that appeals to both weekend warriors and professional fabricators.

This shock uses monotube engineering with a single adjustable valve stack, allowing you to fine-tune compression damping across the full stroke without touching rebound settings. This design philosophy reduces tuning variables and eliminates guesswork—a critical advantage when you're chasing consistent lap times or a locked-down launch feel. The compact 19.3-inch length and 3.68-pound weight footprint make it adaptable to various chassis configurations.

Street rodders, autocross enthusiasts, and drag racers benefit most from this shock's adjustable compression knob, which provides tactile feedback and repeatable settings across multiple vehicles or testing sessions. QA1's precision machining and quality control ensure consistent performance across a product run, eliminating the wide variance you'll encounter in budget alternatives.