Explaining a car on Instagram: "Roller rocker arms are one of those small engine parts that look simple — but make a big difference. ⚙️ Instead of sliding across the valve tip like traditional rockers, they use a tiny precision roller that reduces friction and helps the valve move more smoothly. With their sleek metal bodies, needle-bearing pivots, and that little wheel at the tip, they almost look like miniature pieces of race-car jewelry. 🔧✨ The result? Better efficiency, less wear, and more