--- product_id: 500917126 title: "4082 1120 KV Brushless Motor 4Pole Shaft 5mm with Water Cooling Jacket for RC Boat (1120kv)" brand: "usa" price: "€ 327.26" currency: EUR in_stock: true reviews_count: 2 url: https://www.desertcart.hr/products/500917126-4082-1120-kv-brushless-motor-4pole-shaft-5mm-with-water store_origin: HR region: Croatia --- # 1120 KV high RPM power Water cooling jacket for optimal heat dissipation 4-pole design for superior torque & efficiency 4082 1120 KV Brushless Motor 4Pole Shaft 5mm with Water Cooling Jacket for RC Boat (1120kv) **Brand:** usa **Price:** € 327.26 **Availability:** ✅ In Stock ## Summary > 🚤 Power your RC boat like a pro — cool, fast, and unstoppable! ## Quick Answers - **What is this?** 4082 1120 KV Brushless Motor 4Pole Shaft 5mm with Water Cooling Jacket for RC Boat (1120kv) by usa - **How much does it cost?** € 327.26 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/500917126-4082-1120-kv-brushless-motor-4pole-shaft-5mm-with-water) ## Best For - usa enthusiasts ## Why This Product - Trusted usa brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision Engineering:** 4-pole, 12-slot design with high-purity copper windings and ABEC5 oversized bearings ensures ultra-smooth, efficient power delivery. - • **Built to Last & Impress:** Durable aluminum alloy shell and corrosion-resistant components combine ruggedness with sleek, professional aesthetics. - • **Unmatched Power & Speed:** 1120 KV brushless motor delivers blistering acceleration and top-end RPMs for your RC boat. - • **Stay Cool Under Pressure:** Advanced water cooling jacket with CNC machined aluminum keeps your motor running at peak performance without overheating. - • **Whisper-Quiet Performance:** Low-friction, high-precision bearings minimize noise so you can focus on dominating the water, not the motor hum. ## Overview The Surpass Hobby USA 4082 1120 KV Brushless Motor is a high-performance, water-cooled motor engineered specifically for 650-800mm RC boats. Featuring a 4-pole design, CNC machined aluminum cooling jacket, and high-purity copper windings, it delivers over 95% efficiency and up to 3400W of power. Its durable, corrosion-resistant aluminum alloy construction and precision ABEC5 bearings ensure long-lasting, quiet operation, making it the ultimate upgrade for serious RC boat enthusiasts. ## Description the difference between this brushless motor and ordinary motor that is a waterproof motor with outstanding waterproof performance, Let you have a better sense of experience.Features:1. 4 Pole 12 Slot Hi-torque Motor Design,Precision Engineered for Maximum Energy Conversion2. CNC Machined 6061 T6 Billet Aluminum Heatsink Can3 . High Purity Copper Windings Maximizes Efficiency,High RPM ABEC5 Oversized Bearings3. Precision balanced rotor,smoothness for best reliability and maximum RPM5. Stator - Super Thin (0.2mm) Laminations ,Removable/Replaceable RotorSpecifications:Brand: Surpass HobbyProduct: 4082 Brushless MotorKV(RPM/Volt): 1120Max Amps: 78AMax Voltage: 43VWatt: 3400WMotor Size: ø40x82mmWinding Type: WYENumber of Turns: 2.5YNo load current: 1.8AMax RPM: 50000Resistance(MΩ):21.0Shaft Diameter: 5mmRotor Poles: 4Connector: 4.0mm connectorN.W: 400gWater Cooling Jacket Unit:Model: 40-SSize: ø48x56mmN.W: 41gPackage List:1 x 4082 Brushless Motor1 x Water Cooling Jacket Unit Review: Very powerful, very large - This is by far the largest BLDC motor I own. I build model RC machines, including boats and this motor will be perfect for my larger builds. I tested this with a 40mm prop on a 3s pack and it performed well. The included water cooling jacket is a nice bonus and even comes with spare O-Rings. Be sure to use at the very least an 80a ESC, preferably 100a+ with this motor. I'm running an 80a ESC, which should be fine as long as I don't WOT this motor for extended periods. Review: Nice motor upgrade - Perfect motor upgrade for my rc boat. Can't wait to install it and rip up the Lake with this beastly motor. I did a mock up and the size is just right. Motor is sturdy and strong, well built with 4 poles and a water cooled heatsink. Overall really nice and powerful rc boat motor. ## Features - 【Brushless RC Boat Motor】This motor is designed for 650-800mm Boat.Exquisite shape and exquisite craftsmanship, Surpass hobby boat motors are engineered to provide maximum power and cooling for your RC watercraft. - 【4 Poles Design】4 poles design ensures high torque & high efficiency, offers the ship much faster acceleration response and stable output of power,The overall efficiency exceed 95 percent. - 【Good Heat Dissipation】This is made of high-quality aluminum alloy and copper with cooling set, use advanced processing technology ensures good heat dissipation,which is durable and has a long service life. - 【Low Noise】High RPM ABEC5 Oversized Bearings, Superior bearing is precision and durable with low noise and small friction to achieve the best reliability and maximum RPM. - 【High Grade Material】 Made of metal material, the motor with durable shell, advanced rotor structure, high-quality shaft, high-precision bearings ,Durable, Corrosion Resistant and Great looks. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BG84JT9D | | Brand | Surpass Hobby USA | | Brand Name | Surpass Hobby USA | | Customer Reviews | 4.8 out of 5 stars 9 Reviews | | Horsepower | 4.62 Horsepower | | Included Components | no | | Item Weight | 0.48 Kilograms | | Item weight | 0.48 Kilograms | | Manufacturer | SHENZHEN SURPASS TECH CO.,LTD | | Material | Aluminum | | Material Type | Aluminum | | Model | 1 | | Part Number | 1 | | Speed | 1120 RPM | | UPC | 768486240241 | | Voltage | 12 Volts | ## Product Details - **Brand:** Surpass Hobby USA - **Horsepower:** 4.62 Horsepower - **Material:** Aluminum - **Speed:** 1120 RPM - **Voltage:** 12 Volts ## Images ![4082 1120 KV Brushless Motor 4Pole Shaft 5mm with Water Cooling Jacket for RC Boat (1120kv) - Image 1](https://m.media-amazon.com/images/I/51qPsA4K5VL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Very powerful, very large *by A***I on 22 June 2023* This is by far the largest BLDC motor I own. I build model RC machines, including boats and this motor will be perfect for my larger builds. I tested this with a 40mm prop on a 3s pack and it performed well. The included water cooling jacket is a nice bonus and even comes with spare O-Rings. Be sure to use at the very least an 80a ESC, preferably 100a+ with this motor. I'm running an 80a ESC, which should be fine as long as I don't WOT this motor for extended periods. ### ⭐⭐⭐⭐ Nice motor upgrade *by E***N on 18 June 2023* Perfect motor upgrade for my rc boat. Can't wait to install it and rip up the Lake with this beastly motor. I did a mock up and the size is just right. Motor is sturdy and strong, well built with 4 poles and a water cooled heatsink. Overall really nice and powerful rc boat motor. --- ## 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.hr/products/500917126-4082-1120-kv-brushless-motor-4pole-shaft-5mm-with-water](https://www.desertcart.hr/products/500917126-4082-1120-kv-brushless-motor-4pole-shaft-5mm-with-water) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-09-18*