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MPI Hobby is exclusively designated for wholesale customers. Retail customers please visit to place orders. Thank you.
MPI Hobby is exclusively designated for wholesale customers. Retail customers please visit to place orders. Thank you.

Castle Creations SideWinder 4 Sensorless WP ESC

Original price $84.95 - Original price $84.95
Original price
$84.95 - $84.95
Current price $84.95

While the brand-new SIDEWINDER 4™ builds upon Castle's highly popular platform, the SIDEWINDER 1:10 SCALE SERIES, it stands as the pioneering system to harness Castle's latest technology, CRYO-DRIVE™. CRYO-DRIVE™ amalgamates innovations from advanced hardware and software, enhancing thermal performance. Cooler temperatures translate to extended run times and increased power for your SIDEWINDER 4 setup.

Additional Highlights:

  • Suitable for 2s - 3s LiPo or 6 - 8 cell NiMH use in vehicles weighing up to 6.5lbs with battery, ready to roll.
  • Supports sensorless brushless and/or brushed motor operation.
  • Waterproof ESC design with a splash-resistant 30MM fan*.
  • Features a fixed 5.0-volt, 2-amp Peak BEC.
  • Audible alerts for error conditions.
  • Improved drag brake functionality.
  • Smoother sensorless startups.
  • Convenient transmitter programming for six common adjustable settings.
  • Accessible additional settings and software updates through Windows®-based Castle Link software and USB adapter (available separately), Field Link Card (available separately), or Castle Link App with a B-LINK Bluetooth Adapter (available separately).
  • Compatible with Telemetry Link for Futaba® S.BUS2 (available separately).

The SIDEWINDER 4 is a versatile ESC suitable for a wide range of applications. Whether you're off-roading, corner-carving, or conquering trails, we've got you covered!

The Sidewinder 4 is offered in various configurations:

  1. ESC only for rock crawling applications with brushed** motors down to 19 turns.
  2. ESC only for use with your existing Castle 1406, 1410, or 1415 4-Pole brushless motor.
  3. ESC and motor combo packages, bundled with our 1406, 1410, and 1415 4-Pole brushless motors.

The Sidewinder 4 is available as:

  • ESC only for rock crawling applications with brushed** motor down to 19 turn.
  • ESC only for use with your existing Castle 1406, 1410 or 1415 4-Pole brushless motor
  • ESC and motor combo packages, bundled with our 1406, 1410 and 1415 4-Pole brushless motors









(3.2mm or 5mm shaft)


2S-3S on 2WD buggies, stadium trucks and touring cars; 2S on 2WD SCTs

2S only on lightweight vehicles; 2WD buggies, stadium trucks and touring cars

2S-3S on 2WD/4WD short course trucks and monster trucks; 3S with conservative gearing

4x4 Monster Trucks and SCTs on 3S

PROUDLY DESIGNED AND MANUFACTURED IN OLATHE, KANSAS, the NEW SIDEWINDER 4 comes with Castle Creations' 1-year warranty and unmatched 'make-it-right' customer support.

*Not designed for submerged operation. In wet conditions, rinse with fresh water to remove dirt or corrosives, then thoroughly dry the unit.

**Brushed motors are recommended for rock crawlers (vehicles traveling 3-5mph). Brushless motors are suitable for rock racing. If your vehicle primarily navigates bound-up situations, slowly traverses rocks and obstacles, it's a rock crawler. If it consistently travels at speeds of 5mph or higher, it's a rock racer."

Technical Specs
Input Voltage Range: 2s - 3s LiPo; 6 - 8 cell NiMH
BEC Specifications: 5.0 volts fixed, 2 amps.
Operating Environment: Waterproof* design allows for use in nearly any environment
Brake: Proportional
Reversible: Yes, but may be disabled for racing.
On/Off Switch: Yes
Cooling Fan: 30mm fan included
ESC Size: L: 2.08" (52.92mm)
W: 1.50" (38.05mm)
H: 1.28" (32.56mm)
ESC Weight (w/wires): 2.26 oz. (64 g)
Connectors: 4mm female bullets for motor connection.
Items Needed for Operation: Brushless or Brushed motor, Battery Connector required; Castle 4mm polarized connectors, Dean's Ultra Plug, or Traxxas Power Connector recommended.
Product Use Statements: *Although Sidewinder 4 is waterproof, it is not intended for operation while completely submerged in liquid. They can corrode when exposed to corrosive materials, such as salt water. Always rinse the ESC with clean water after exposure to corrosives or dirt. While the controller may be waterproof, we suggest users confirm that the rest of their vehicle, including the batteries, servos, radio and chassis are also waterproof before exposing them to liquids of any kind.
Application Guidelines: The Sidewinder 4 is a versatile ESC that can be used in a wide variety of applications. it can be paired with any of our 14xx series 4-pole brushless motors; it can also be used in a rock crawling application with a brushed motor down to a 19 turn.
Please refer to our Gearing Chart for recommended motor, battery and gearing for some of the more popular vehicles on the market.
Max. Recommended Vehicle Weight: No more than 6.5lbs with battery, ready-to-run.
Programmability: Fully programmable Castle feature set using Castle Link USB adapter(sold separately) and freely downloadable Castle Link Windows software, or the Castle Link App and a B-LINK Bluetooth Adapter (sold separately).
Telemetry Link Capable: Yes
Tech Notes: Not all LiPos are created equal, and surge ratings should never be used to determine a pack’s suitability for a brushless application. Use the CONTINUOUS C rating only. Brushless setups frequently hit 100+ amps in peaks. We strongly suggest using 5,000 mAh or larger LiPo cells with a discharge rating of at least 30C (or high quality 25C batteries such as Traxxas® Power Cells®). Our experience suggests using only mild gear ratios with NiMH cells. Do not attempt to use NiMH cells in extreme setups.