{"product_id":"firduo-tuna-pro-kit-1500w-18-5kgf-electric-fin-20ah-battery-vx3","title":"Firduo TUNA Thrust System PRO KIT 1500W 18.5KGF + 20Ah Battery + VX3 Remote for SUP \u0026 Kayak","description":"\u003ch3\u003e🌊 Complete PRO Kit. Plug In. Paddle Faster.\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eFirduo TUNA Thrust System PRO KIT\u003c\/strong\u003e is a complete, ready-to-ride electric propulsion bundle for SUP, surfboards, paddleboards, and kayaks — combining the \u003cstrong\u003eTUNA TT160 1500W Electric Fin Thruster\u003c\/strong\u003e, \u003cstrong\u003eVX3 IP67 Waterproof Remote\u003c\/strong\u003e, and \u003cstrong\u003eFD13S5P 20Ah Fully Waterproof Battery\u003c\/strong\u003e in one matched system. Everything you need to electrify your board is included — just mount, connect, and ride.\u003c\/p\u003e\n\u003cp\u003eThe TUNA thruster delivers up to \u003cstrong\u003e18.5 KGF thrust at 30A \/ 1430W\u003c\/strong\u003e with a fluid-optimized design for large thrust, low resistance, and low power consumption. The all-aluminum alloy anode shell, 360° large-flow water inlet, and high-thrust propeller are engineered for sustained water sport performance. Available in four variants: \u003cstrong\u003eTail Fin (A2-1)\u003c\/strong\u003e or \u003cstrong\u003eDIY interface (A2-2)\u003c\/strong\u003e, each in \u003cstrong\u003eCW or CCW\u003c\/strong\u003e propeller rotation.\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg style=\"float: none;\" alt=\"Firduo TUNA Thrust System 1500W 18.5KGF Electric Fin for SUP Kayak Surfboard\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0227\/7805\/2685\/files\/tt160a2-1.jpg?v=1767928946\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cspan style=\"color: rgb(0, 0, 255);\"\u003e\u003ca style=\"color: rgb(0, 0, 255);\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0227\/7805\/2685\/files\/tt160a2-1.pdf?v=1776697130\" target=\"_blank\"\u003e\u003cstrong\u003eDownload TUNA Thrust System 2D Drawings (PDF)\u003c\/strong\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003chr\u003e\n\u003ch3\u003e⚡ Key Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e✅ \u003cstrong\u003eComplete PRO Kit\u003c\/strong\u003e — TUNA thruster + VX3 remote + 20Ah waterproof battery; everything included\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003e18.5 KGF Maximum Thrust\u003c\/strong\u003e — at 30A \/ 1430W input on 13S; scalable from 10.8 KGF at 500W\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003e1500W Continuous \/ 2000W Peak Power\u003c\/strong\u003e — sustained high-thrust for SUP, surfboard, and kayak propulsion\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eFluid-Optimized Design\u003c\/strong\u003e — large thrust, small resistance, low power consumption\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003e360° Large-Flow Water Inlet\u003c\/strong\u003e — maximizes water intake for consistent thrust at all angles\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eHigh-Strength All-Aluminum Alloy Anode Shell\u003c\/strong\u003e — corrosion-resistant, lightweight, durable for saltwater use\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eUniversal Fin Interface (A2-1) or DIY Interface (A2-2)\u003c\/strong\u003e — fits standard fin boxes or custom mounts\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eCW or CCW Propeller\u003c\/strong\u003e — select rotation direction for single or dual-thruster builds\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eFully Waterproof Motor + ESC\u003c\/strong\u003e — integrated thruster and control system; fully sealed\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003e50A Continuous Waterproof Power Plug\u003c\/strong\u003e — quick self-locking battery connection; no tools required\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eVX3 IP67 Remote\u003c\/strong\u003e — 1.6-inch display,1500mAh Battery; wireless charging\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003e20Ah \/ 936Wh Fully Waterproof Battery\u003c\/strong\u003e — 5m waterproof, 40A continuous, 3.5h fast charge, 46.8V (13S)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e📋 Full Specifications\u003c\/h3\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(0, 0, 255);\"\u003e\u003cstrong\u003eTUNA TT160 Thrust System\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ctable style=\"width: 100%; height: 415.6px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 29.4583%; height: 39.2px;\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.3036%; height: 39.2px;\"\u003eTT160-A2-1 (Tail Fin) \/ TT160-A2-2 (DIY Interface)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.4583%; height: 19.6px;\"\u003e\u003cstrong\u003eMax Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.3036%; height: 19.6px;\"\u003e2,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.4583%; height: 19.6px;\"\u003e\u003cstrong\u003eContinuous Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.3036%; height: 19.6px;\"\u003e1,500W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.4583%; height: 19.6px;\"\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.3036%; height: 19.6px;\"\u003e10S–14S (36V–58.8V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 29.4583%; height: 39.2px;\"\u003e\u003cstrong\u003eInstantaneous Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.3036%; height: 39.2px;\"\u003e70A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 29.4583%; height: 39.2px;\"\u003e\u003cstrong\u003eContinuous Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.3036%; height: 39.2px;\"\u003e30A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 29.4583%; height: 39.2px;\"\u003e\u003cstrong\u003eMax Thrust (13S \/ 30A)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.3036%; height: 39.2px;\"\u003e18.5 KGF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 29.4583%; height: 39.2px;\"\u003e\u003cstrong\u003ePropeller Direction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.3036%; height: 39.2px;\"\u003eCW or CCW (select variant)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.4583%; height: 19.6px;\"\u003e\u003cstrong\u003eWater Inlet\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.3036%; height: 19.6px;\"\u003e360° large-flow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 23.6px;\"\u003e\n\u003ctd style=\"width: 29.4583%; height: 23.6px;\"\u003e\u003cstrong\u003eShell Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.3036%; height: 23.6px;\"\u003eHigh-strength all-aluminum alloy, anodized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.4583%; height: 19.6px;\"\u003e\u003cstrong\u003eWaterproof\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.3036%; height: 19.6px;\"\u003eFully waterproof (motor + ESC integrated)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 29.4583%; height: 39.2px;\"\u003e\u003cstrong\u003ePower Cable\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.3036%; height: 39.2px;\"\u003e10AWG silicone, 110cm Red + Black; 50A continuous waterproof plug included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 29.4583%; height: 39.2px;\"\u003e\u003cstrong\u003eSignal Cable\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.3036%; height: 39.2px;\"\u003e11AWG silicone; Black −, Red +, White signal; PPM\/PWM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 29.4583%; height: 19.6px;\"\u003e\u003cstrong\u003eNet Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 67.3036%; height: 19.6px;\"\u003e2.93 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eThrust Data (13S Voltage)\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCurrent\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eThrust\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10A\u003c\/td\u003e\n\u003ctd\u003e500W\u003c\/td\u003e\n\u003ctd\u003e10.8 KGF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e15A\u003c\/td\u003e\n\u003ctd\u003e750W\u003c\/td\u003e\n\u003ctd\u003e13.6 KGF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e20A\u003c\/td\u003e\n\u003ctd\u003e980W\u003c\/td\u003e\n\u003ctd\u003e15.4 KGF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e25A\u003c\/td\u003e\n\u003ctd\u003e1,210W\u003c\/td\u003e\n\u003ctd\u003e17.6 KGF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e30A\u003c\/td\u003e\n\u003ctd\u003e1,430W\u003c\/td\u003e\n\u003ctd\u003e18.5 KGF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca style=\"color: rgb(0, 0, 255); text-decoration: underline;\" href=\"https:\/\/firduo.com\/products\/7318593405106\" target=\"_blank\"\u003eVX3 IP67 Waterproof Remote Controller\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable style=\"width: 100%; height: 274.4px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 27.2619%; height: 39.2px;\"\u003e\u003cstrong\u003eWaterproof Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.5%; height: 39.2px;\"\u003eIP67\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 27.2619%; height: 19.6px;\"\u003e\u003cstrong\u003eDisplay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.5%; height: 19.6px;\"\u003e1.6-inch super clear screen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 27.2619%; height: 39.2px;\"\u003e\u003cstrong\u003eDisplay Data\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.5%; height: 39.2px;\"\u003eGPS, motor power, MOS temperature, throttle progress bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 27.2619%; height: 39.2px;\"\u003e\u003cstrong\u003eESC Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.5%; height: 39.2px;\"\u003eVESC and Non-VESC compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 27.2619%; height: 39.2px;\"\u003e\u003cstrong\u003eOperating Modes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.5%; height: 39.2px;\"\u003eESK8 mode \/ E-surf mode (cruise control)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 27.2619%; height: 19.6px;\"\u003e\u003cstrong\u003eControl Protocol\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.5%; height: 19.6px;\"\u003ePPM \/ UART\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 27.2619%; height: 19.6px;\"\u003e\u003cstrong\u003eBattery\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.5%; height: 19.6px;\"\u003e1,500mAh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 27.2619%; height: 19.6px;\"\u003e\u003cstrong\u003eCharging\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.5%; height: 19.6px;\"\u003eWireless magnetic charging\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 27.2619%; height: 19.6px;\"\u003e\u003cstrong\u003eESC Failure Alert\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.5%; height: 19.6px;\"\u003eYes (real-time detection)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 27.2619%; height: 19.6px;\"\u003e\u003cstrong\u003eReceiver\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69.5%; height: 19.6px;\"\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(0, 0, 255);\"\u003e\u003cstrong\u003eFD13S5P Waterproof Battery\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFD13S5P（5C）\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e46.8V (13S)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCapacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20Ah \/ 936Wh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePeak Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eContinuous Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWaterproof Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFully waterproof, ≤5m depth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5.7 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQuick Charge Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.5 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCharging Adapter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e54.6V \/ 5A fast charger (contact charging)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInstall Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eQuick plug self-locking\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003e📦 What's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1× TUNA Thrust System (A2-1 Tail Fin or A2-2 DIY, CW or CCW — per selected variant)\u003c\/li\u003e\n\u003cli\u003e1× VX3 Remote Controller (with receiver)\u003c\/li\u003e\n\u003cli\u003e1× FD13S5P 20Ah \/ 936Wh Battery (46.8V, 13S)\u003c\/li\u003e\n\u003cli\u003e1× 54.6V \/ 5A Fast Charger\u003c\/li\u003e\n\u003cli\u003e1× 50A Waterproof power plug(Pre-installed on the power cord)\u003c\/li\u003e\n\u003cli\u003e1× Receiver waterproof box (pre-installed - connects to PWM signal cable)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003e⚠️ Board not included. Select CW or CCW propeller direction based on your build — for dual-thruster builds, use one CW and one CCW unit.\u003c\/em\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg style=\"margin-bottom: 16px; float: none;\" alt=\"Firduo TUNA Thrust System Wiring and Connection Diagram\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0227\/7805\/2685\/files\/8a39b0bdfab9ca86caa50ff6bd0ffb82.jpg?v=1767928948\"\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cem\u003e\u003cimg alt=\"Firduo TUNA DIY Installation Module Universal Fin Box Interface\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0227\/7805\/2685\/files\/DIY_7fdf815a-9176-4798-9861-ffd3c0ff072b.jpg?v=1767928947\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e🔗 Compatible Builds \u0026amp; Recommended Pairings\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSUP \/ Paddleboard\u003c\/strong\u003e — A2-1 Tail Fin version fits standard fin boxes; A2-2 DIY version for custom mounts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurfboard \/ Kayak \/ Fishing Boat\u003c\/strong\u003e — 18.5 KGF thrust for assisted paddling and motorized propulsion\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-Thruster Builds\u003c\/strong\u003e — combine one CW + one CCW unit for twin-thruster for greater thrust.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTUNA Thruster Only\u003c\/strong\u003e: \u003ca rel=\"noopener\" title=\"Firduo TUNA Thrust System 1500W 18.5KGF Electric Fin Thruster for SUP \u0026amp; Kayak\" href=\"https:\/\/firduo.com\/collections\/diy-kit\/products\/firduo-tuna-tt160-a2-1500w-thrust-system-electric-fin\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eFirduo TUNA Thrust System \u003c\/span\u003e\u003c\/a\u003e— purchase thruster separately if you have an existing battery and remote\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVX3 Remote Only\u003c\/strong\u003e: \u003ca rel=\"noopener\" title=\"Firduo VX3 Waterproof Remote UART \u0026amp; PWM for Efoil \u0026amp; Electric Surfboard\" href=\"https:\/\/firduo.com\/collections\/firduo-remote\/products\/firduo-vx3-waterproof-remote-efoil-electric-surfboard\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eFirduo VX3 Remote\u003c\/span\u003e\u003c\/a\u003e\u003ca style=\"color: rgb(0, 0, 255);\" href=\"https:\/\/firduo.com\/products\/7318593405106\" target=\"_blank\"\u003e\u003c\/a\u003e — replacement or standalone remote purchase\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTUNA + VX3 Kit (No Battery)\u003c\/strong\u003e: \u003ca rel=\"noopener\" title=\"Firduo TUNA Thrust System 1500W 18.5KGF + VX3 Remote Kit for SUP \u0026amp; Surfboard \u0026amp; Kayak\" href=\"https:\/\/firduo.com\/collections\/diy-kit\/products\/firduo-tuna-1500w-18-5kgf-electric-fin-vx3-kit-sup-kayak-surfboard\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eFirduo TUNA Thrust System VX3 Electric Fin Kit\u003c\/span\u003e\u003c\/a\u003e — thruster + remote without battery for riders with existing power\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnderwater Thruster Motor Only\u003c\/strong\u003e: \u003ca rel=\"noopener\" title=\"Firduo TUNA 1500W 18.5KGF Thruster Electric Fin for SUP \u0026amp; Kayak \u0026amp; Surfboards\" href=\"https:\/\/firduo.com\/collections\/diy-kit\/products\/firduo-tuna-tt160-a3-1500w-18-5kgf-electric-fin\" target=\"_blank\"\u003e\u003cspan style=\"color: #0000ff;\"\u003eFirduo TUNA Thruster Motor (CW\/CCW)\u003c\/span\u003e \u003c\/a\u003e— motor unit for custom ROV or AUV builds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e🛠️ Setup Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelect the correct variant\u003c\/strong\u003e — choose \u003cstrong\u003eA2-1 (Tail Fin)\u003c\/strong\u003e if your board has a standard fin box (US box, Futures, FCS); choose \u003cstrong\u003eA2-2 (DIY Interface)\u003c\/strong\u003e for custom mounting. Select \u003cstrong\u003eCW\/CCW\u003c\/strong\u003e for standard single-thruster builds; for dual-thruster builds, order one CW and one CCW unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount the thruster\u003c\/strong\u003e — for A2-1: insert the TUNA fin into your board's fin box and secure with the fin pin. For A2-2: attach the DIY mounting bracket to your board using the provided interface and secure firmly. Ensure the thruster is fully seated and the propeller has clear water flow with no obstructions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnect the battery\u003c\/strong\u003e — align the FD13S5P battery's quick self-locking plug with the thruster's 50A waterproof power plug. Push and rotate to lock — the connection is secure when fully engaged. Do not force-pull without unlocking the self-locking mechanism.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnect the VX3 receiver\u003c\/strong\u003e — connect the VX3 receiver's signal cable to the thruster's 11AWG signal cable (White = signal, Red = power, Black = ground). The thruster's ESC powers the receiver directly — no separate BEC is required. \u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower on sequence\u003c\/strong\u003e — power on the VX3 remote first, then connect the battery to the thruster. Verify the VX3 display shows receiver connection. Move the throttle trigger slowly to confirm the thruster responds correctly at low speed before entering the water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater test at low power\u003c\/strong\u003e — start at 20–30% throttle in calm, shallow water. Verify smooth thruster operation, check for vibration or unusual noise, and confirm the propeller rotates in the correct direction (pushing the board forward). Increase to full power only after confirming correct operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCharging the battery\u003c\/strong\u003e — connect the 54.6V \/ 5A fast charger to the FD13S5P battery's charging port. Full charge from empty takes approximately 3.5 hours. The battery's contact charging interface is fully waterproof — rinse with fresh water after saltwater use before charging.Please note that you should not drain the battery to 100% to avoid damaging it.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003e❓ FAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: What is the difference between the A2-1 (Tail Fin) and A2-2 (DIY Interface) variants?\u003c\/strong\u003e\u003cbr\u003eThe \u003cstrong\u003eA2-1 (Tail Fin)\u003c\/strong\u003e version uses a standard fin-box interface — it installs directly into your board's existing fin box (Please refer to and compare the tail fin version; if you are unsure whether it is compatible with the fin box, please contact us.) like a regular surfboard fin. No drilling or modification required. The \u003cstrong\u003eA2-2 (DIY Interface)\u003c\/strong\u003e version has a custom mounting interface for boards without a standard fin box, or for custom mounting positions. Choose A2-1 for standard boards; choose A2-2 for custom builds or boards without fin boxes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: How do I choose between CW and CCW propeller rotation?\u003c\/strong\u003e\u003cbr\u003eFor a \u003cstrong\u003esingle-thruster build\u003c\/strong\u003e, either CW or CCW will work — the propeller direction determines which way the thruster pushes. For \u003cstrong\u003edual-thruster builds\u003c\/strong\u003e (two thrusters side by side), use one CW and one CCW unit to cancel out rotational torque and maintain straight tracking. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: How long does the 20Ah battery last per charge?\u003c\/strong\u003e\u003cbr\u003eThe \u003cstrong\u003eFD13S5P 20Ah \/ 936Wh battery\u003c\/strong\u003e provides approximately \u003cstrong\u003e60–90 minutes of riding\u003c\/strong\u003e at moderate throttle (15–20A \/ 700–950W). At full throttle (30A \/ 1430W), runtime is approximately 40 minutes. Actual runtime depends on rider weight, board type, water conditions, and throttle usage. The battery charges fully in \u003cstrong\u003e3.5 hours\u003c\/strong\u003e with the included 54.6V \/ 5A fast charger.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4: Is the battery truly waterproof? Can I submerge it?\u003c\/strong\u003e\u003cbr\u003eYes — the FD13S5P battery is rated \u003cstrong\u003efully waterproof to 5 meters depth\u003c\/strong\u003e. It is designed for water sport use and can be submerged during normal SUP, surfboard, and kayak operation. The quick self-locking power plug is also waterproof — ensure it is fully locked before entering the water.If the power connector accidentally comes into contact with seawater, rinse the battery charging port with fresh water before charging to prevent corrosion.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ5: Can I use the TUNA thruster with my existing battery and remote instead of the PRO KIT?\u003c\/strong\u003e\u003cbr\u003eYes — the TUNA thruster accepts any \u003cstrong\u003e10S–14S battery (36V–58.8V)\u003c\/strong\u003e with a 50A+ continuous discharge rating via the included waterproof power plug. It also accepts \u003cstrong\u003ePPM\/PWM remote\u003c\/strong\u003e via the signal cable. If you already have a compatible battery and remote, purchase the \u003ca style=\"color: rgb(0, 0, 255);\" href=\"https:\/\/firduo.com\/products\/8712035303602\" target=\"_blank\"\u003eTUNA TT160 Thrust System standalone\u003c\/a\u003e or the \u003ca style=\"color: rgb(0, 0, 255);\" href=\"https:\/\/firduo.com\/products\/8908200444082\" target=\"_blank\"\u003eTUNA + VX3 Kit (without battery)\u003c\/a\u003e instead of the full PRO KIT.\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0227\/7805\/2685\/files\/e462aee6a7ec9fd3fc77234538abd363.jpg?v=1694684622\" alt=\"Firduo TUNA PRO KIT Complete System TUNA Thruster VX3 Remote 20Ah Battery SUP Kayak\" style=\"float: none;\"\u003e\u003c\/div\u003e","brand":"FIRDUO","offers":[{"title":"TT160-A2-1 （CW）PRO KIT","offer_id":47580533391538,"sku":"TT160-A2-1-CW-PRO KIT","price":969.0,"currency_code":"USD","in_stock":true},{"title":"TT160-A2-1 （CCW）PRO KIT","offer_id":47580533424306,"sku":"TT160-A2-1-CCW-PRO KIT","price":969.0,"currency_code":"USD","in_stock":true},{"title":"TT160-A2-2（CW）PRO KIT","offer_id":47580533457074,"sku":"TT160-A2-2-CW-PRO KIT","price":969.0,"currency_code":"USD","in_stock":true},{"title":"TT160-A2-2（CCW）PRO KIT","offer_id":47580533489842,"sku":"TT160-A2-2-CCW-PRO KIT","price":969.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0227\/7805\/2685\/files\/1_10399750-e27f-4133-8ae0-cbd1a96bed26.jpg?v=1781446464","url":"https:\/\/firduo.com\/products\/firduo-tuna-pro-kit-1500w-18-5kgf-electric-fin-20ah-battery-vx3","provider":"Firduo","version":"1.0","type":"link"}