Search  for anything...

Castle B-Link Bluetooth Adapter

  • Based on 529 reviews
Condition: New
Checking for the best price...
$54.95 Why this price?
Save $5.04 was $59.99

Buy Now, Pay Later


As low as $9.16 / mo
  • – 6-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: Only 1 left in stock, order soon!
Fulfilled by Amazon

Arrives Tuesday, Aug 25
Order within 21 hours and 53 minutes
Available payment plans shown during checkout

Protection Plan Protect Your Purchase
Checking for protection plans...

Features

  • CASTLE is a top producer of high performance, high quality products for RC aftermarket upgrades with a 25-year track record of innovation and record-breaking performance. The B-Link Bluetooth Adapter enables users to wirelessly program settings and view and download data logs on current Castle Creations ESCs, many older models and the BEC 2.0/BEC Pro on Apple iOS devices and now Android devices!
  • CONVENIENT WATERPROOF DESIGN allows you to quickly adjust settings in the field without disconnecting or disassembling the model. It can stay installed in the model or be easily swapped between models.
  • FREE APP DOWNLOAD is readily available in the Apple App Store and Google Play. Once downloaded it does not require a data connection so it can be used in the most remote of areas and wont use data.
  • EASY TO USE application can be used with multiple B-Link Bluetooth Adapters or can store model information and allow you to use one adapter on multiple models.
  • SYNC information between multiple devices by creating a free account (requires internet connection to sync database).

Description

Control at your fingertips! Castle Link™ ESC tuning is an essential component for customizing vehicle performance for many Castle Creations’ customers. While the controllers are plug and play, optimizing a Castle ESC through the Castle Link Programming Suite unlocks the full range of capabilities that set Castle apart from the competition. Users enjoy the ability to adjust many variables to enhance their experience including throttle, braking curve, drag brake, reverse type and more. The Castle B-LINK™ Bluetooth™ Adapter enables users to wirelessly program settings and view and download data logs on current Castle Creations ESCs, many older models and the BEC 2.0/BEC Pro on Apple iOS devices and now Android devices! REQUIREMENTS: Apple devices require iOS version 10.0 or higher. The free Castle Link app for iOS is available on the Apple App Store for use with iPhones and iPads, and Google Play for Android devices. Once downloaded, it does not require a data connection and can be used anywhere, including remote areas.

Compatible Devices: iPhone, iPad, Android smartphones, Android tablets


Color: black


Item dimensions L x W x H: 1.2 x 0.81 x 0.27 inches


Brand: Castle Creations


Item Weight: 6.8 g


Compatible Devices: iPhone, iPad, Android smartphones, Android tablets


Brand: Castle Creations


Model Number: 011-0135-00


UPC: 819326011665


Manufacturer: Castle Creations


Mfr Part Number: 011-0135-00


Built-In Media: B-Link Adapter, Instructions


Item Type Name: Accessory Programming


Warranty Description: 1 Year Warranty Against Manufacturer Defects


Item Dimensions: 1.2 x 0.81 x 0.27 inches


Item Weight: 6.8 g


Package Quantity: 1


Unit Count: 1.0 Count


Number of Items: 1


Color: black


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Aug 25

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Great
Super small, and works good
Reviewed in the United States on October 16, 2025 by IQ

  • easy to install easy to install
Easy to connect, I wound slack wire around the servo and wired tied and this is keeping the b-link from flopping around. The b-link does not have much slack coming out of the receiver. App works good, easy to use, has firmware updates and you can create several profiles.
Reviewed in the United States on July 26, 2019 Reviewed in the United States on July 26, 2019 by hoisi

  • Works awesome, easy to install.
Easy install and hook to Bluetooth, great app on my android phone, lots of different settings. Can really tune the esc in well Castle sidewinder 4 perfect.
Reviewed in the United States on April 4, 2022 by doug

  • Expensive but kinda worth it.
The fact you can do pretty much everything you can do on the computer from your phone on the go makes it totally worth the price if you are into racing and constantly perfecting your car. The app is a little bit of a pain to use on the phone but for quick easy changes it’s perfect. The app also allows you to lock the Bluetooth connection so nobody else can mess with it. ... show more
Reviewed in the United States on November 20, 2022 by Kevin V.

  • Works Great
You will need to know the stock password once the Bluetooth is connected to your phone in the castle app. It is 1234 and then you can change it to whatever you want nowhere in the packaging. Does it say the passcode?
Reviewed in the United States on July 23, 2024 by Steve

  • Expensive For What It Is
Expensive for what it is but it is nice to have and saves a lot of hassle. Works rather well and I have them in at least 8 different rigs.
Reviewed in the United States on June 13, 2022 by Nick & Tiff

  • DO NOT BUY THIS.(Note you have been warned).
I liked the review from the guy who did the video of his esc just beeping, it was funny and I laughed. I am not laughing anymore, my esc did the same thing. I should have read the reviews first, but nope. Figured it was a Castle what could go wrong. Purchase two, one worked and the other was a nightmare. Some times it kinda worked. When it worked it would change my settings with no way to change it back. It would crash in the middle of updating the esc, the last time it bricked it.way too many problems to list here. Call Castle tech support and they said don’t use these, use USB instead. $80 wasted. ... show more
Reviewed in the United States on June 7, 2025 by Appollo Scott

  • Castle B link
If you have a Castle ESC you may want to get this. This plugs directly into the ESC and allows you to communicate with your rig via Bluetooth, on the go.
Reviewed in the United States on October 30, 2024 by Frumba57 RC & Creator Gear

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...