Controlled inflation separates a usable CO2 inflator from one that dumps an entire cartridge in two seconds and leaves you guessing at pressure. The Lezyne Trigger Speed Drive CO2 uses a trigger valve mechanism that releases gas only while you squeeze, letting you pulse air into the tire and stop when you've reached target pressure. If you overshoot, you've wasted the cartridge. The trigger control prevents that by giving you feedback as the tire fills—you feel the resistance change and can release before blowing past your desired PSI.

The slip fit head presses directly onto Presta valves without threading, which speeds up roadside repairs when you're already frustrated with a flat. Press on, inflate, pull off. This Presta-only design trades the versatility of dual-valve heads for a more secure connection that won't wobble or leak during discharge. If you're running Schrader valves on mountain bike wheels, this isn't the inflator for you—Lezyne makes threaded dual-valve options for that application.

CNC-machined aluminum construction handles the stress of repeated cartridge punctures without cracking or stripping threads. The included neoprene sleeve wraps around the cartridge during discharge, insulating your hand from the rapid temperature drop that occurs when compressed CO2 expands. Without insulation, the cartridge gets cold enough to cause discomfort or even minor frostbite on bare skin. This head-only version ships without a cartridge, so you can pair it with your preferred threaded CO2 size—16g for road tires, 25g for higher-volume gravel or mountain applications. At 23 grams for the head and sleeve, the Trigger Speed Drive adds minimal weight to your repair kit while providing the control that basic inflators lack.