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Shop the Exposure TraceR 4 ReAKT rear bike light. Features reactive flare braking technology, 200 lumens output, USB-C fast charging, and IP67 weatherproofing.
With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.
Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!
With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.
So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.
Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.
The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.
No Quibble Returns
We operate a simple 28 days returns policy that applies to all products sold and delivered direct to you, the customer. This means that for any reason you decide that you no longer want the product you may return it in it's original packaging, un-used and un-soiled with the relevant tags attached back to us and once checked we will refund your money within 28 days or replace your product (subject to stock availability). This offer in non-transferable. We do not accept returns that are customer soiled unless faulty and part of a warrantly claim. Shipping charges are non-refundable.
Season:2027
Brand:Exposure
Code:exptracer4ra
Most rear bike lights rely on a static brightness, hoping motorists notice you in time. The Exposure TraceR 4 ReAKT takes cycle safety to the next level by actively adapting to your riding environment. Weighing just 35 grams and pumping out up to 200 lumens in DayBright pulse mode, this ultra-compact rear light flares up when you brake and automatically adjusts to bright ambient light, keeping you visible on busy roads and direct sunlight.
Engineered with a rugged CNC-machined aluminium body and rated IP67 waterproof, the TraceR 4 ReAKT is built to endure harsh winter commutes, group chaingangs, and long endurance rides alike.
ReAKT Technology (Smart Reactive Light): Automatically flares up under braking to alert drivers behind you. It also increases brightness when ambient light intensifies (e.g., breaking out into bright sunlight or low winter glare) so you never get washed out.
Peloton Mode: Built for group rides, Peloton mode senses following riders and automatically dims output to prevent blinding whoever is sitting on your wheel.
200-Lumen DayBright Pulse: Delivers high-visibility pulse patterns engineered to cut through daylight distractions and motorist glare from great distances.
Rapid USB-C Rechargeable: Fully recharges in just 90 minutes, providing up to 40 hours of continuous runtime on lower power modes.
All-Weather CNC Construction: Precision-machined, anodised aluminium body with an IP67 waterproof rating built to handle heavy rain, road spray, and harsh winter conditions.