Castle Creations 1/8 Sidewinder 25.2V WP ESC with 8A BEC CSE010-0139-10

Castle Creations 1/8 Sidewinder 25.2V WP ESC with 8A BEC CSE010-0139-10
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Price: $102.99
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This is a Castle Creations 1/8th Scale Sidewinder 25.2V Waterproof ESC with an 8A Peak BEC. Sidewinder 8th is Castle Creations sport 1:8 scale waterproof ESC that has been paired with the 1515B-2200Kv motor - until now! It’s perfect for entry level, weekend basher, or serious road warriors seeking the benefits of an affordable brushless upgrade. Capable of using 2-6S LiPos, with an 8 amp peak BEC the Sidewinder 8 is the perfect upgrade for 1:8 scale buggies, truggies and on-road vehicles as well as 1:10 scale monster trucks weighing up to 11 lbs. It can also work as a great upgrade for some 4WD short course trucks for 3s or 4s operation.


  • 2S-6S LiPo (25.2V), for use in vehicles up to 11.lbs
  • Sensorless motor operation
  • Large 6.5mm female motor bullet connectors (male connectors sold separately)
  • Waterproof design ESC and splash resistant 30mm fan
  • Powerful 5.5V fixed 8A Peak BEC
  • LED error codes for common error conditions
  • Smooth sensorless startups
  • Convenient transmitter programming for nine common adjustable settings
  • Fully compatible with the Castle Link Programming Suite

Min Voltage: 2S LiPo (7.4V)
Max Voltage: 6S LiPo (25.2V)
Length: 2.45" (62.2mm)
Width: 2.20" (56.0mm)
Height: 1.33" (34.0mm)
BEC Specifications: 5.5V fixed, 8A peak
Weight (with no battery connector): 3.52 oz. (100g)
Connectors: 6.5mm female bullets for motor connection
Max. Recommended Vehicle Weight: Up to 11 lbs, ready-to-run with batteries

Sidewinder 8 ESC
User Guide and Quick Start Guide
Castle decals

Battery Connector required, 6.5mm Castle Connectors are recommended (CSE011-0053-00)
Motor: Castle 15xx series motors, 1415-2400kv recommended

This product was added to our catalog on October 11, 2018

Sunday, Jul 12 2020 (about a year ago)
Castle Creations Sidewinder 8th 1/8 Scale Sensorless Brushless ESC
This ESC is very powerful and very reliable. I have only used 4-cell batteries. I would compare it to the Mamba Monster X. This might be rated for 11 lb offroad vehicles while the monster x is rated 15 lbs, but i own both and they feel equally powerful in my 11 lb 1/8 scale truggy. I have to turn on 30% punch control on both to keep them on the ground. (punch control is power reduction)

I have submerged this ESC in mud, and went on racing, on several occasions.
This ESC is sensorless but it has a significantly smoother takeoff than a traxxas vxl sensorless ESC. It has no power switch which is a good thing to most people, less sophisticated usually means more reliable- and in this case it certainly is rock solid. I removed the top of my case and i can see the entire circuit board/device was submerged in clear epoxy during manufacture, making it completely waterproof except for the 3 bullets for motor plug-in and 5 pins for plugging in the receiver and fan wires- that connection is to be dielectric-greased upon installation for a very reliable waterproof system.
I have looked inside my mamba monster x to compare construction and they look extremely similar. the exact same technique is used to waterproof what looks like the exact same circuitry plus 1 row of chips- the ones that give motor sensor capabilities.
I am left wondering if this sidewinder 8 is actually able to handle a 15 lb vehicle, rather than just 11 lb as listed.
In any case, this ESC is only about 100$. You can get this ESC combined with a 150$ 1515 2200kv sensored motor for 180$. If you are interested in a 2200kv motor at all, buy that combo! The motor full price+ this 100$ powerhouse ESC for +30$ These arent sale prices- i got my first combo on sale for 150$
Verified Owner
Wednesday, Apr 14 2021 (3 months ago)
Castle Creations Sidewinder 8th 1/8 Scale Sensorless Brushless ESC
I'm knocking a star off for the lack of an on/off switch.

Overall, I like Castle speed controls. They are at a decent budget price and great for either a back up or a general fun R/C. This one is running a 2400kV 550 motor on 2S in a 1990 Tamiya King Cab. I don't expect any issues, and this work great in my setup.
Verified Owner
Thursday, Mar 5 2020 (about a year ago)
Castle Creations Sidewinder 8th 1/8 Scale Sensorless Brushless ESC
Fishing for compliments gets you one star every time.