1 1

Shimano

Shimano Ultegra Di2 Internal Routing Junction Box

Shimano Ultegra Di2 Internal Routing Junction Box

$26.88 USD
$32.99 USD $26.88 USD
Sale Sold out
Shipping calculated at checkout.

In stock

ISMJC41

Shipping Policy

Free shipping available on all orders above $99.99

Read our full policy here

Return Policy

You have 45 days from the date of purchase to initiate a return. To be eligible for a return. Read full policy here

Pricing Policy

We have implemented a new pricing policy for you to easily identify heavily discounted and final sale products. All products that have a sale price ending in .97, excluding shipping & taxes, are considered final sale. This means that once purchased, these items cannot be returned or exchanged.

We understand that making a purchase decision for such items can be important, so we encourage you to carefully review the product details, specifications, and sizing information before making your purchase. If you have any questions or need further assistance, our customer support team is available to help you.

By offering a final sale on heavily discounted items, we are able to provide you with the best possible discounts and ensure an efficient shopping experience. Should you require any additional information or clarification regarding our pricing policy, please feel free to contact our customer support team.


We have implemented a new pricing policy for you to easily identify heavily discounted and final sale products. All products that have a sale price ending in .97, excluding shipping & taxes, are considered final sale. This means that once purchased, these items cannot be returned or exchanged.

We understand that making a purchase decision for such items can be important, so we encourage you to carefully review the product details, specifications, and sizing information before making your purchase. If you have any questions or need further assistance, our customer support team is available to help you.

By offering a final sale on heavily discounted items, we are able to provide you with the best possible discounts and ensure an efficient shopping experience. Should you require any additional information or clarification regarding our pricing policy, please feel free to contact our customer support team.

Product Features

Crankset Compatibility: 2 x 10

Compatible Components: Shimano Ultegra Di2

Recommended Use: ditching your mechanical tethers

This is the Shimano Ultegra Di2 Internal Junction Box. This box is referred to as the junction box "B" on a Di2 build. The SM-JC41 is for use with internal wiring setups and is the main center of e-tube Di2 systems. For external wiring setups see the SM-JC40.

  • Frame Junction Box connects via SD50 E-tube wires to four different points: front derailleur, rear deailleur, cockpit junction box and battery mount
  • Use Di2 system checker to update component firmware from http://e-tubeproject.shimano.com/
  • All Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions.
​​
View full details

About us

Welcome to Movatik.com, your ultimate destination for high-quality bicycle parts from renowned brands.

As a multichannel retailer, we are dedicated to providing cyclists with the best products and exceptional service.

At Movatik, we curate a vast selection of top-notch bicycle parts, ranging from components to accessories, ensuring that every rider can find what they need to enhance their cycling experience. With our focus on excellent customer service, fast shipping, and competitive pricing, we strive to be your go-to source for all your cycling needs.

Learn more

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)

New Arrivals

1 25
View all