Quickshifter

A quickshifter allows clutchless gear changes. A sensor on the gear linkage detects pressure on the lever and the ECU briefly cuts ignition or fuel for a few milliseconds. That unloads the gearbox dogs so the next gear can engage while the throttle stays open.

A basic quickshifter works for upshifts only. A two-way system (often called an auto-blipper) also handles downshifts by blipping the throttle electronically to match engine speed. Drag bikes traditionally use air-powered shifters, while many modern sport, naked and adventure bikes have electronic units from the factory or as an accessory.

Tips: shift with a firm, decisive movement, keep the linkage correctly adjusted, and still use the clutch when pulling away and at very low revs, where most systems do not work smoothly.