The Best Car Alarm & Security Systems 2025

1. New Viper 3105V Car Alarm Security System and Keyless Entry 1-Way

New Viper 3105V Car Alarm Security System and Keyless Entry 1-Way This entry level Viper security system will wrap your vehicle in protection, with the most sophisticated electronic technologies available today, including the Stinger® DoubleGuard® shock sensor, Revenger® six-tone siren and Failsafe® Starter Kill - Now featuring 4-button remotes, Control Center, and XR+ receiver. This state-of-the-art system also offers in-demand convenience feature like keyless entry.

New Viper 3105V Car Alarm Security System and Keyless Entry 1-Way 3-channel security/keyless entry system Clone-Safe Code-Hopping technology Parking Light Flash feature Failsafe Starter Kill for added security Stinger DoubleGuard Shock Sensor for detecting impacts

2. Security Upgrade for Viper DS4+ Remote Start Systems

Compatible with RSG6-AL and RS1B-AL remote start systems; lets you add alarm system components to your existing CompuStar remote start controller; 3-in-1 digital adjustable sensor

Protect your vehicle from theft with this Directed DS4+ security kit. It includes a six-tone mini siren that audibly alerts you when someone tries to break into your car, and the shock/tilt sensor activates the alarm and acts as a deterrent for potential intruders. This Directed DS4+ security kit works with existing remote start systems for full security protection.

3. Compustar - Vehicle Security Add-on Kit for Remote Start Systems - Black/Gray

Compatible with RSG6-AL and RS1B-AL remote start systems; lets you add alarm system components to your existing CompuStar remote start controller; 3-in-1 digital adjustable sensor

Upgrade your Compustar RS1B-DC3, RS1B-AL, CS4905S-KIT, CSX4905S-KIT or RSG6-AL to a full featured vehicle security system with the FT-ALARMIT-KIT.

4. Compustar - 1-Way Security System with Shock Sensor and Siren - Black

Compatible with Viper DS4+ remote start systems; adds additional protection; includes shock/tilt sensor and six-tone siren

Protect your vehicle from theft with this CompuStar alarm kit. It emits a high-pitched, six-tone siren and has a blue LED to discourage others from stealing your vehicle or its contents. This CompuStar alarm kit includes two remote transmitters with a range of 200 feet, so you can lock your car from a distance.

5. Compustar - 1-Way Security System Installation Included

Compatible with select CompuStar remote start and security system controllers; 1-way communication; automatic unlock function

300-ft max range alarm bundle with two 1-way remotes. Includes CM2500 control module, shock sensor, siren, LED, and ELOCK starter-kill relay. DroneMobile-ready for telematics/tracking from smartphone.

6. Viper - Powersports 1-Way Security System

Compatible with Viper DS4+ remote start systems; adds additional protection; includes shock/tilt sensor and six-tone siren

Safeguard your motorcycle, ATV or boat with this water-resistant Viper Powersports security alarm system. Two compact two-button remotes let you and another user easily arm and disarm the system, and the closed loop trigger feature adds protection to the valuables in your vehicle. The shock and tilt sensor activates this Viper Powersports security alarm system when your vehicle is moved.