DI2 Sm-ew90-a Electrical Distributor
Earn up to Rs. 551.50 cashback with Club House
Description
The Shimano SM-EW90-A is a junction unit at the heart of any Di2 electronic groupset — it distributes power and data signals from a single battery connection to multiple components across the bike. For Indian riders building or upgrading a Di2 system, this small but critical part keeps every shift precise and every connection clean, whether you're riding through monsoon Chennai or climbing the Western Ghats above Lonavala.
Use Cases
Daily training. Reliable use across Indian training conditions — heat, humidity, and rough tarmac.
Race day. Performance-grade construction for competitive efforts.
Long rides. Built for full-day rides across Western Ghats, Sahyadri, or Nilgiri climbs.
Our Take
India's riding conditions — sudden monsoon downpours in Pune, dusty highway shoulders outside Hyderabad, searing 35°C+ summer heat in Delhi — demand that every electrical connection in your Di2 system stays secure and corrosion-resistant. The SM-EW90-A is exactly the kind of component that separates a tidy, reliable build from one that develops gremlins mid-ride. It's a modest investment that protects a significantly larger one. We stock it because clean wiring is not optional on Indian roads.
Sizing for Indian Riders
This is a fixed electronic component, not a sized product — there is no size selection required. What matters is port count: the SM-EW90-A provides multiple EW-SD50 e-tube ports, making it suited to builds with multiple wired components. Confirm your Di2 generation and the number of components in your system before ordering. Contact Cobbled Climbs if you need help mapping your build.
Compatibility Notes
The SM-EW90-A is compatible with Shimano Di2 electronic groupsets using the EW-SD50 e-tube wire standard. It works with Dura-Ace, Ultegra, and 105 Di2 systems across road and triathlon builds. It is not compatible with wireless Di2 (EW-WU111 setups that eliminate wired junctions) or SRAM eTap/Campagnolo EPS systems. Always verify your groupset generation before ordering.
Pairs Well With
Complete your Di2 build with Di2 e-tube junction wires and cable routing accessories, an internal or external battery unit appropriate for your frame, Di2 shifters and derailleurs from the same generation groupset, and a Di2 charging cable to keep everything topped up between rides.
Explore the full Shimano collection at Cobbled Climbs | Learn more at Shimano
Specifications
| Specification | Detail |
|---|---|
| Brand | Shimano |
| Product Type | Cycling Product |
| Shipped From | Mumbai, India |
Explore the full Shimano collection at Cobbled Climbs
Why buy from Cobbled Climbs
- 100% genuine — authorised Shimano retailer in India
- Free delivery on orders above Rs. 2,500
- Cash on delivery available nationwide
- 7-day easy returns
- Shipped from Mumbai
- Expert advice — built for Indian cycling conditions
Frequently Asked Questions
What is the Shimano SM-EW90-A best used for?
The SM-EW90-A is the central wiring junction in a Shimano Di2 electronic groupset. It distributes power and data from the battery to your electronic front and rear derailleurs and other connected components. It's essential for any wired Di2 road or triathlon build — without it, your Di2 components have no common hub to connect through.
What size SM-EW90-A should I order?
The SM-EW90-A is a single-size electronic component — no rider sizing is involved. What matters is ensuring it matches your Di2 generation and that you have the correct EW-SD50 e-tube wires in the right lengths for your frame. If you're unsure about your system configuration, contact Cobbled Climbs before ordering for a quick compatibility check.
Will the Shimano SM-EW90-A hold up in India's monsoon and heat?
Shimano Di2 components are engineered for global cycling conditions, including heat, humidity, and wet weather. The SM-EW90-A's e-tube connections are designed to resist moisture ingress. For monsoon riding in Mumbai, Kolkata, or Coorg, ensure all junction connections are properly seated and routed to minimise standing water exposure. Regular inspection post-monsoon is good practice for any electronic groupset.
How does the SM-EW90-A compare to running Di2 without a junction unit?
Some Di2 builds route wires directly between components using inline junctions, but the SM-EW90-A centralises all connections into one unit, making diagnostics, firmware updates, and battery charging far simpler. For complex builds with multiple wired components, the SM-EW90-A delivers a cleaner, more serviceable setup — particularly useful when you need to troubleshoot a connection fault quickly.
Is the Shimano SM-EW90-A worth Rs. 11,030 in India, and what warranty applies?
At Rs. 11,030, the SM-EW90-A is a small fraction of a full Di2 groupset cost but protects that entire investment by ensuring clean, reliable signal distribution. Shimano's standard component warranty applies. Cobbled Climbs is an authorised Shimano retailer — all products are 100% genuine. Free delivery on orders above Rs. 2,500, with cash on delivery available nationwide.
Why pay full price when loyalty pays back?
Club House rewards you for every purchase — up to 5% cashback, 100 bonus points to start, birthday rewards, and early access to limited drops. It’s our way of saying thanks for riding with us.
Shipping:
We ship all orders within 48 hours, excluding Sundays and public holidays. Delivery typically takes 3 to 5 days depending on your location.
Returns:
If your item arrives damaged, incorrect, or doesn’t fit, you may request a return within 7 days of delivery. Email us at support@cobbledclimbs.com with your order details. Items must be unused and returned in original packaging with all tags and labels intact.
Sale Item Guidelines:
Products purchased on sale are final sale and not eligible for return or exchange. Please double-check sizing, fit, and product details before purchasing.
Please note:
We follow a no money refund policy. Eligible returns are offered store credit or exchange only.
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DI2 Sm-ew90-a Electrical Distributor
Earn up to Rs. 551.50 cashback with Club House
Frequently Asked Questions
Does Cobbled Climbs ship DI2 Sm-ew90-a Electrical Distributor across India?
Is the DI2 Sm-ew90-a Electrical Distributor on Cobbled Climbs 100% authentic?
What is the return and exchange policy for DI2 Sm-ew90-a Electrical Distributor?
Is DI2 Sm-ew90-a Electrical Distributor currently in stock?
What payment methods are accepted?
Does DI2 Sm-ew90-a Electrical Distributor come with a manufacturer warranty?
How do I find the right size for DI2 Sm-ew90-a Electrical Distributor?
Can I get a price match if I find DI2 Sm-ew90-a Electrical Distributor cheaper elsewhere?
What We Reach For
When the ride calls, we don’t think twice. A jersey that’s made to move. A computer that knows the way. A care kit that keeps it all running smooth. These are the pieces we reach for — ride after ride.
