This RSI billet aluminum momentary engine kill switch is a direct plug-and-play upgrade for Arctic Cat Catalyst models, including the Catalyst 600 and 858. Its momentary push-button design requires a press-and-hold to shut off the engine, then automatically returns to the run position, so branches, gloves, or riding gear won't accidentally kill your engine. The CNC-machined billet aluminum housing has a black anodized finish with a laser-etched RSI logo and mounts to standard 7/8-inch handlebars. The complete OEM factory connector is already installed, so installation is truly plug-and-play with no cutting, splicing, depinning, or rewiring.