Home / TEDGIX (EDGE) K4 Underwater Scooter Stand Up Paddle Board Kayak Motor
  • TEDGIX K4 pro kit with ultra long-range B8 820Wh waterproof battery for maximum runtime and distance.
  • TEDGIX K4 underwater propulsion system with standard B4 444Wh battery for extended water adventures.
  • TEDGIX K4 electric kayak motor kit featuring the lightweight B2 199Wh waterproof battery for casual cruising.
  • TEDGIX K4 SUP motor kit with travel-friendly B1 98Wh battery (airline approved) and remote controller.
  • TEDGIX K4 Smart Drive underwater thruster unit paired with wireless remote controller (battery not included).
  • TEDGIX K4 Smart Drive underwater thruster unit featuring an integrated propeller and stabilizing fin design.
  • Wireless handheld remote controller for TEDGIX K4 with LCD screen displaying speed, battery life, and RPM data.
  • TEDGIX (EDGE) K4 Underwater Scooter Stand Up Paddle Board Kayak Motor

TEDGIX (EDGE) K4 Underwater Scooter Stand Up Paddle Board Kayak Motor

(5.0)
Wireless Remote Control Power Fin | Turn Your SUP & Kayak Electric Instantly
The upgraded TEDGIX K4 (formerly EDGE) is a dedicated electric propulsion system for SUPs and kayaks. Easily mounts to your board's fin box to provide wireless remote-controlled power. (Note: Designed for mounting only, not for handheld use).
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  • Detail

    Upgrade Your Paddle. Electrify Your Ride.

    The TEDGIX K4 (previously known as the EDGE Smart Drive) is a specialized electric thruster designed to transform your manual watercraft into a high-speed cruiser. Don't let wind or fatigue stop your adventure—motorize your Stand Up Paddle Board (SUP) or kayak in seconds.
    Why Choose the K4 System?
    Instant Electric Power: Replaces your standard fin with a powerful motor. Perfect for fighting strong currents, headwinds, or simply extending your range on the water.
    Wireless Remote Control: Control your speed effortlessly with the waterproof wireless remote (watch-style or handheld mount), keeping your hands free for paddling or fishing.
    Universal Mounting: Features a slide-in adapter that fits most standard SUP and kayak fin boxes. No drilling or complex installation required.
    Flexible Battery Options: Choose from airline-safe 98Wh (B1) for travel lightness, or upgrade to 820Wh (B8) for marathon-level endurance.
  • Customer Reviews
    Oli******en

    Cruise Control, A Fishing Game-Changer

    Super easy to use, powerful enough, and responsive in steering. Caught two groupers on my first launch. Cruise control frees up my hands—highly recommended!

    Reply:
    Congratulations on catching the groupers! We're glad the cruise control let you focus on fishing, thanks for recommending~
    Eth******lor

    Compact, Quiet, and Better Craftsmanship Than Expected

    Excellent craftsmanship, much quieter than I imagined, and super compact.

    Reply:
    Thank you for your 5-star review! Quiet design and exquisite craftsmanship are what we adhere to—hope you enjoy using it~
    Jam******cia

    Compact & Stable, Easy Steering Experience

    Fast delivery, the product is overall compact and easy to carry out, stable in performance, and much more convenient with left and right steering. It's a great thruster, worth buying~ Follow-up review the same day: Tried it again this afternoon, really good.

    Reply:
    Thank you for your follow-up review! Compact portability and stable steering are the core advantages of the K4—wish you a smooth trip every time~
    김**

    DJI급 모터라니! 올해 꼭 사야 할 아이템✨

    이 제품의 완성도는 기대를 훨씬 뛰어넘었어요. 이 제품을 발견하기 전에 다른 회사 제품을 살差点 했지만, 지금 보면 정말 올바른 선택이었어요. 마치 "카약 모터계의 DJI" 같아요. 특히 리모컨 디자인이 정말 마음에 들어요, 배터리 외관도 깔끔하고, 플러그 색상도 세련되어요. 내일 호수에서 시운전할 거예요. 이것은 올해 구매한 제품 중 가장 만족스러운 제품이에요. 아마도 한국 최초 구매자일까요? 누가 묻는다면 꼭 추천할게요!

    Reply:
    인정해 주셔서 감사합니다! "카약 모터계의 DJI"라고 불려서 깊이 영광입니다—호수 시운전 경험 기대하겠어요~
    Lia******on

    Portable & Fast Charging, Perfect for Fishing Trips

    I just have to say it's amazing! Super portable, powerful, smooth to operate, and stylish in appearance. No need to bring a power bank when going fishing—can charge my phone quickly directly. Highly recommend it to everyone!

    Reply:
    Thank you for your 5-star review! We're thrilled that the K4's portability and practical functions meet your fishing needs~
    Dani********guez

    Good Speed, Responsive Steering & Great Endurance

    6 knots against the current, 8.5 knots with the current—good speed, responsive steering, the battery and thruster are portable, and the endurance is quite good.

    Reply:
    Thank you for your speed test feedback! The 8.5 knots with the current and responsive steering can meet your travel needs—we're very happy~
    Luc******wn

    Precise Steering, Beats Competitors

    The craftsmanship is impeccable, exquisite with great metal texture. Caught a few small fish on my first test run haha. The steering experience is so much better—this remote control is second to none, full of technology! As long as the steering gear has a long service life, this product is unbeatable. Now when the anchor gets stuck, it's easy to get it up by moving in a few directions, so comfortable haha. I used to use others, which is also good, but after using this, I can't go back~Hope you launch more great products in the future.

    Reply:
    Thank you for your recognition! The remote control's technology and steering function are the core highlights of the K4. We will continue to optimize product life and launch more high-quality new products~
    Will*********guez

    Supports 300lbs, B8 Battery is More Suitable

    The K4 is really easy to use, compact with excellent craftsmanship, and powerful enough. With my friend, we're nearly 300lbs total, and it's still super strong—really didn't disappoint me. The steering is responsive, and the customer service patiently taught me how to install it, great battery life. Follow-up review after 34 days: Summary after using K4 for a month: The B4 battery is small, light, and durable—works for half a day with intermittent use, but only 1 hour at full throttle. Suggest everyone get B8 directly. The battery can charge the phone, this function is awesome! The K4 is not the fastest, but definitely enough—after all, speed and power consumption are proportional. I think the K4 has achieved the ultimate balance between lightweight and performance! Powerful functions, portable, easy to use! So I can't help but write a follow-up review.

    Reply:
    Thank you for your monthly follow-up review! We're happy that the 300lbs load capacity and the practical functions of the B4 battery have been recognized by you. The B8 battery is indeed more suitable for long-term full-throttle use—hope you enjoy the experience~
    Èv*****ois

    Texture en fibre de carbone, à la fois élégant et puissant

    La machine et la batterie sont incroyables, super belles – beaucoup plus exquises que sur les photos quand je l'ai reçu ! La télécommande est légère, l'affichage numérique est clair et la commande est précise. Le K4 utilise de la fibre de carbone à beaucoup d'endroits, donc très luxueux ! Le B4 n'est pas lourd, a une texture de haute qualité mais n'est pas encombrant, j'adore ! J'ai testé la machine et le bruit est très faible, obsédée par elle ! Je vais l'apprécier sur l'eau ce week-end – achetez maintenant, profitez maintenant ! Le service client est excellent👍

    Reply:
    Merci pour votre reconnaissance de l'apparence et de la texture ! La matière en fibre de carbone allie légèreté et qualité supérieure—bon voyage sur l'eau ce week-end~
    Isa*******avis

    Compared Multiple Brands, No Regrets Choosing K4

    Compared several brands and finally chose EDGE K4, and it really didn't disappoint me. Powerful, responsive in steering, and the customer service has a great attitude.

    Reply:
    Thank you for choosing K4 after comparing multiple brands! Power and steering are our core selling points, and the customer service team will continue to provide high-quality service~

See the K4 in Action: Tutorials & Adventures

Watch our step-by-step installation guide to get started in minutes. Plus, explore real-world scenarios and see how the K4 transforms your kayaking、SUP and fishing experience.
    • Powerful Thrust

      400W Brushless Motor
      9.3kg / 20lbs Thrust

    • Top Speed

      9.6km/h
      6mph

    • Remote Control

      Wireless Bluetooth RC

    • Steering Servo

      Free Steering Angle: ±35°

    • Ultra-long Battery Life

      20-240 Minutes

    • Cruise Control

      One-Touch Cruise Control

    • Easy Installation

      Standard 9-inch Fin with a Quick-Release Base

    • Lightweight

      Weight: 1000g 
      ( Excluding Cables )

    Engineered for Ultimate Performance

    400W Brushless Power | Smart Steering | Wireless Freedom

    IP68 Waterproof | Real-Time Data Display | Control & Easy to Use

    Comes with wireless remote for effortless speed/steering adjustment and precise handling. One-touch cruise control enables instant mastery, even for beginners. Engineered for the ocean, the remote features an IP68 waterproof rating, ensuring reliable performance even when submerged or battling waves.

    Remote Control・Dimensions・Battery Life・Package Inclusions