Exposure Zenith 4 Helmet Light: A Comprehensive Review

The Exposure Zenith 4 helmet-mounted light has been meticulously reviewed, showcasing its advanced features and superior performance for nocturnal cycling adventures. This latest model boasts significant upgrades, including enhanced lumen output, a larger battery capacity, and the convenience of USB-C charging. While its price point is on the higher side, the light's exceptional beam quality, intuitive operation, and robust construction make it a compelling choice for avid cyclists who prioritize visibility and reliability during night rides.

The Exposure Zenith 4, priced at £280, stands as Exposure Lights' most potent helmet-compatible illumination device. It delivers an impressive maximum output of 2360 lumens, a notable increase of 160 lumens compared to its predecessor, the Mk3. Its design aesthetic aligns with other helmet models in the Exposure range, such as the Diablo 15 and Joystick 18. Crafted from 6063 aluminum, the light features a sleek gunmetal gray anodized finish with laser-etched logos. Intricate machining on the front and rear of the body creates cooling channels, which also contribute to its light weight of 150g. The unit measures 120mm in length and 412mm at the beam head, demonstrating a thoughtful balance of power and portability.

Internally, the Zenith 4 houses a 6,000 mAh Li-ion battery, capable of powering its three white XPL2(W3) LEDs at full lumen count for one hour. For extended rides, the lowest setting provides an impressive 36 hours of illumination, with various intermediate modes to optimize burn time and brightness according to specific riding needs. Its IP67 rating ensures top-tier protection against dirt, debris, and even temporary submersion, offering peace of mind in challenging weather conditions. The transition from a DC charging port to a USB-C port is a welcome improvement, facilitating faster charging (reportedly 66% quicker) and enabling the light to function as a power bank, adding to its versatility.

Operating the Zenith 4 is designed to be intuitive. The rear button activates the LEDs, which double as both a mode indicator and a fuel gauge, using a simple green, amber, and red traffic light system. The light offers seven distinct modes; modes 1-6 provide varying levels of burn time and output, while mode 7 enables the innovative TAP on/off feature. In TAP mode, a simple tap on the light body allows cyclists to quickly cycle through power settings without needing to use the rear button. This function adapts to the selected mode, offering different preset power levels depending on the mode chosen, making on-the-fly adjustments seamless and efficient.

The light comes equipped with a durable hard case, a power cable, a GoPro-compatible helmet mount, a handlebar mount, and a lanyard, enhancing its utility beyond cycling for tasks such as dog walking or general outdoor use. During performance testing, the Zenith 4 excelled, particularly when paired with a bar-mounted light, significantly improving visibility during cornering and enhancing the ability to read the trail ahead. The setup instructions were clear and easy to follow, allowing for quick mastery of the light's functionality. The helmet mount, while appearing slightly less robust than older models, proved effective on helmets with a central channel. Riders with helmets lacking this feature may need to acquire an additional curved adhesive mount.

The beam quality of the Zenith 4 is particularly impressive. Its three LEDs generate a powerful, concentrated hotspot that penetrates deep into the trail, with a soft taper at the edges that provides clear peripheral vision without distraction. This capability, especially when combined with a powerful main light, dramatically elevates the night riding experience. For longer rides, using Mode 5 (offering three hours at 940 lumens) proved ideal, with the TAP function allowing for easy transitions between medium and low settings on less technical sections. The full 2360-lumen output was utilized for demanding technical sections, lasting approximately an hour, complementing the main light effectively.

When considering alternatives, the Diablo 15 (2000 lumens at £240) and Joystick 18 (1200 lumens at £195) from Exposure Lights offer slightly more affordable options. The Lezyne Helmet Lite Drive 1200+ is another competitor at £90, delivering 1200 lumens for two hours, though it is heavier and lacks the TAP feature. While the Zenith 4 represents a significant investment, its build quality, performance, and advanced features like TAP technology make it a premium choice for serious night riders. For those with budget constraints, exploring other models within Exposure's product line is recommended to find a suitable balance of features and cost. Ultimately, the Zenith 4 significantly enhances the night riding experience, making it a valuable asset for any dedicated cyclist.