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- Castle 2535 Sensored Motor - 520Kv
Castle 2535 Sensored Motor - 520Kv
Product #: 060-0117-00
Taking OVERPOWERING to the next level.
The Castle 2535 520KV is the largest and most powerful motor ever produced by Castle in our 28+ year history. Designed to produce the torque and power for vehicles weighing up to 50lbs and up to 12s LiPo. When paired with the Castle Cobra 5 HV, the 2535 - 520kv can easily push 1/5th and 1/4th vehicles like the Losi 5IVE-T, 5IVE-B, or DBXL-E. It is the perfect upgrade for any 1:5 and 1:4 scale RC hobby vehicles (including gas to electric conversions) weighing up to 50 lbs. It also boasts features in our new V3 motor design, including a larger rear bearing, direct to bullet winding connections, smooth can exterior making water cooling a breeze, and a stainless steel sleeve rotor.
FEATURES:
- Running modes include Sensored and an ULTRA-EFFICIENT sensorless mode.
- High-strength, high-temperature grade neodymium sintered magnets combined with High-strength stainless steel sleeve wrap ensures the integrity of the rotor is not compromised during harsh running conditions.
- Oversized front and rear NMB bearings and vibration dampening system ensure the longest bearing life possible.
- Our proprietary winding techniques allow us to produce a stator assembly that is the lowest possible resistance, resulting in a cooler running motor.
- Updated modern and sleek design; looks as cool as it performs.
Without a robust and reliable design, efficiency will only go so far. RC enthusiasts love pushing their equipment to the edge. The Castle engineers know this and spared no expense when developing a design that could hold up to the harsh conditions that the RC community will throw at it, resulting in a cooler running motor. A cooler motor has a longer lifetime. Construction of our motor required careful component selection; each verified through internal testing to ensure the HIGHEST EFFICIENCY possible. In the end, the result is a motor with unmatched quality,performance, and reliability. We wouldn’t put our name on anything less.
- Minimum Input Voltage : 3S
- Maximum Input Voltage : 12S
- Sensored Capable : Yes
- Recon G6 Certified Motor : No
- ROAR Certified Motor : No
Technical Specs | |
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Input Voltage Range: | 12S LiPo (50.4v) Max |
Kv: | 520 |
Max. RPM: | 38,000 |
Size: | Length: 5.8" (147.5mm) Diameter: 2.7" (68.7mm) |
Weight (w/wires): | 84.8 oz (5.5lbs) / 2.4kg |
Shaft Size: | Length: 30mm Diameter: 8mm |
Mounting Hole Specifications: | 4mm @ 30mm, 4mm @ 40mm |
Connectors: | 8.0mm male connectors. |
Items Needed for Operation: | Compatible Electronic Speed Control (ESC) (see Recommended ESC(s) below) |
Product Use Statements: | Monitor motor temperatures closely; overheating a motor will cause permanent damage to the magnets. Never exceed 180° F on the the motor or ESC. Do not use mounting screws that extend more than 5mm into the front of the motor. Using too long of a screw can result in damage to the motor's windings and will not be covered by the warranty. |
Application Guidelines: | Perfect upgrade for any 1:5 and 1:4 scale RC hobby vehicles (including gas to electric conversions) weighing up to 50 lbs. |
Recommended ESC(s): | Cobra 5 HV |
Max. Recommended Vehicle Weight: | 50lbs |
Tech Notes: | Running modes: Sensorless and Sensored |
Resources |
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Sensored Motor Quick Start |
Castle Creations, Inc. warrants this product to be free from manufacturing defects for a period of one year from date of purchase.
This is a high power product with the potential to be very dangerous. Please read the safety information before use. This product may contain chemicals known to the State of California to cause cancer and or birth defects or other reproductive harm.
Motor designed in Olathe, Kansas USA.
Motor made in China.

- Our IMPROVED 4-POLE 12-SLOT design boasts exceptional EFFICIENCY and produces LESS HEAT.
- QUIETSENSE™ technology shields the sensors from magnetic field noise generated from the motor coils and keeps your motor and ESC in sync at all times. Use of a Flux Shield™ in conjunction with secondary Sense Magnets delivers even HIGHER PRECISION and MORE EFFICIENT startups.
- Our OPTIMIZED design eliminates the need for mechanical timing adjustments. Our sensor alignment method delivers uniform timing and torque in both directions, automatically.
- Updated modern and sleek design; looks as cool as it performs.
You will reap the benefits of longer run times on one battery and a cooler running motor that can be pushed harder.
We take OVERPOWERING seriously.
Castle engineers always add a little something extra in their designs that takes your performance to the next level. We have not skimped here. Many customers have utilized our industry leading software functionality that Castle Link* offers. When paired with a Castle Creations sensor supported ESC, you can unlock advanced tuning capabilities that Castle Link provides specifically for sensored motors.

SMARTSENSE™uses the motors sensors to start the motor to provide smooth starts,excellent torque, and low-speed drivability. Once the motor is turning,it seamlessly transitions to Castle’s ULTRA- EFFICIENT sensorless mode. When running, a motor must transition between different load points and a different timing advance is required for optimal efficiency at all load points. Using mechanical timing adjustments alone, you can only target one driving condition, such as higher start power or higher top end speed. This sacrifices performance and efficiency during the other driving phases. Electronic timing in SMARTSENSE™will advance timing automatically for peak performance during all driving conditions. This allows users to combine the best of both worlds in an unrivaled HYBRID between smooth sensored startups and high-efficiency sensorless drive.
With a Castle sensored ESC and sensored motor you will have the ULTIMATE POWER PLANT for your vehicle. Users will experience PRECISE throttle control, BUTTERY SMOOTH starts, PEAK PERFORMANCE and EFFICIENCY throughout the full throttle range. You will feel the POWER and LONGER RUN TIMES that a WORLD-CLASS motor produces.
It’s not magic… it’s SMARTSENSE™.