--- product_id: 346533951 title: "BKS-G4R" brand: "bikespark" price: "373.43 DT" currency: TND in_stock: true category: "Bike Spark" url: https://www.desertcart.tn/products/346533951-bks-g4r store_origin: TN region: Tunisia --- # 50 lm Ultra-Bright LED with 220° Visibility 240HR USB Rechargeable Battery Life Auto-Sensing Precise Brake Detection BKS-G4R **Brand:** bikespark **Price:** 373.43 DT **Availability:** ✅ In Stock ## Summary > 🚴‍♂️ Light up your ride, stay ahead of the pack! ## Quick Answers - **What is this?** BKS-G4R by bikespark - **How much does it cost?** 373.43 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/346533951-bks-g4r) ## Best For - bikespark enthusiasts ## Why This Product - Trusted bikespark brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Smart Brake Alert:** Instant ultra-bright boost on deceleration for safer rides - • **Quick Snap Mounting:** Tool-free 50/80mm rack mount with easy release for on-the-go convenience - • **Reflector That Shines:** World-class reflector delivers 30%+ above EU brightness standards - • **Effortless Auto ON/OFF:** Motion-activated light with 1-minute auto shutoff—never forget to power down - • **Regulation-Ready Brightness:** Complies with ISO 6742 & German StVZO for trusted night visibility ## Overview The BikeSpark Auto-Sensing Rear Light G4R is a USB rechargeable, IPX6 water-resistant bike tail light featuring a patented deceleration sensing algorithm that boosts brightness instantly when braking. With up to 240 hours of battery life, 50 lumens of ultra-bright LED output, and a highly reflective EU-compliant reflector, it ensures maximum visibility and safety. Designed for easy rack mounting and quick release, this Taiwanese-made light balances cutting-edge tech with practical convenience for the modern cyclist. ## Description desertcart.com : BikeSpark Auto-Sensing Rear Light G4R, USB Rechargeable, 240HRs, Precise Brake Sensing for Cargo Rack, Large Reflector, 50/80mm Screw Mounted, Easy Release, Made in Taiwan : Sports & Outdoors ## Features - Upgrade Your Reflector to BKS-G4R Now! - BikeSpark’s Auto-Sensing Rear Lights detect bike deceleration with an innovative deceleration sensing algorithm, Vsenx (US Patent No.: 10427594 B2). Once deceleration is detected, BikeSpark increases the brightness to ultrabright for 2.5 seconds, alerting and improving the reaction time of the person in any vehicle traveling behind. - Automatic ON/OFF - Press the Control Button to turn on the light and you are good to go. Never have to remember to turn off your rear light again! BikeSpark turns off automatically after 1 minute of inactivity, and turns on when motion is detected. The perfect balance of convenience, battery life and riding safety. - Great Brightness meeting Regulatory Compliance - Super bright LEDs provide excellent long distance and 220 degree visibility, up to 50 lm with low power consumption. Besides, two constantly-on lighting modes meet ISO 6742 1/3/5, and Germany StVZO Regulations help you riding safely in the darkest nights. - Highly Reflective Reflector Meeting Regulatory Compliance: BikeSpark BKS-G4R equips with the world-class vehicle reflector. The highly reflective reflector not only meets German and EU compliance but also provides up to 30% more than required reflective brightness. - Made in Taiwan / Quick Mounting / Snap to Release / 4 Lighting Modes / Li-polymer Rechargeable / IPX6 Water Resistance / Low Battery Indicator / Upgrade Your Reflector to BKS-G4R Now! ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0991V426W | | Auto Part Position | Rear | | Best Sellers Rank | #83,761 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #99 in Bike Taillights | | Brand | BikeSpark | | Brand Name | BikeSpark | | Color | Black, Red | | Customer Reviews | 4.3 out of 5 stars 1,332 Reviews | | International Protection Rating | IPX6 | | Item Dimensions L x W x H | 4.25"L x 1.57"W x 1.3"H | | Item Weight | 0.08 Kilograms | | Manufacturer | J-MEX Inc. | | Manufacturer Part Number | AQ-6OW2-VCVP | | Material | Plastic Or Metal | | Material Type | Plastic Or Metal | | Model Number | AQ-6OW2-VCVP | | Mounting Type | Rack Mount | | Number of settings | 4 | | Power Source | Battery Powered | | Warranty Description | 1 Year | | Water Resistance Level | Water Resistant | ## Product Details - **Auto Part Position:** Rear - **Brand:** BikeSpark - **Color:** Black, Red - **Item Weight:** 0.08 Kilograms - **Material:** Plastic Or Metal - **Mounting Type:** Rack Mount - **Number of settings:** 4 - **Power Source:** Battery Powered - **Product Dimensions:** 4.25"L x 1.57"W x 1.3"H - **Water Resistance Level:** Water Resistant ## Images ![BKS-G4R - Image 1](https://m.media-amazon.com/images/I/71onBMCdx7L.jpg) ![BKS-G4R - Image 2](https://m.media-amazon.com/images/I/715VMiau+OL.jpg) ![BKS-G4R - Image 3](https://m.media-amazon.com/images/I/81JM3msHxYL.jpg) ![BKS-G4R - Image 4](https://m.media-amazon.com/images/I/710cHEcM5kL.jpg) ![BKS-G4R - Image 5](https://m.media-amazon.com/images/I/71dcpBNz4aL.jpg) ## Questions & Answers **Q: Does the company offer replacement brackets? I don’t want to buy a whole second light to get a bracket.** A: On the Q & A section on the product page, BikeSpark says they don't sell extra brackets, and don't recommend moving the light from bike to bike, but they don't say why. It would seem if you can safely remove the light to prevent theft, moving it to another bike shouldn't be a problem. I wanted a second bracket as well and found it wasn't available. I think the 'problem' is that they want to put the bottom-line ahead of customer satisfaction. It's a great light, don't get me wrong, but customers should be able to use it as they see fit. **Q: Does light go out when fully charged?** A: Yes the light goes out after fully charged **Q: where is the photo of the mounting bracket to the rack ?** A: The mounting bracket has 2 bolts that fit the standard reflector mounting holes in the rear rack. **Q: Does it come with a mount?** A: Yes. It's designed to mount on a flat surface like the rear of a metal bike luggage rack which usually has the standard holes pre drilled. The mount stays on the bike and the actual light securely snaps into it. It is the best light you can possibly buy for a bike. Make sure you get the rechargeable model. ## Frequently Bought Together - BikeSpark Auto-Sensing Rear Light G4R, USB Rechargeable, 240HRs, Precise Brake Sensing for Cargo Rack, Large Reflector, 50/80mm Screw Mounted, Easy Release, Made in Taiwan - BriskMore Handlebar Bike Mirror, Scratch Resistant Glass Lens, Ajustable and Rotatable Safe Rearview Bicycle Mirror - ROCKBROS Bike Bell Classic Bicycle Bell Mountain Bike Bells for Adults with Loud Sound and Fit for 0.87-1.25in/22.2-31.8mm Bicycle Handlebars --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/346533951-bks-g4r](https://www.desertcart.tn/products/346533951-bks-g4r) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-14*