Shimano EW-GM300-M Di2 Grommet – 7x8 mm
The Shimano EW-GM300-M Di2 Grommet (7x8 mm) is a precision rubber insert designed to securely hold Shimano Di2 EW-SD300 electric wires in your bike frame. Installed directly into the frame’s cable entry ports, this grommet ensures a snug, vibration-free fit while protecting your electronic wiring from chafing, movement, and long-term wear.
Specifically engineered for modern Shimano Di2 systems, the EW-GM300 provides a clean, professional internal routing finish while improving durability and protecting your frame’s cable ports. Quick and easy to install, it’s an essential small component that ensures reliable electronic shifting performance.
If you're upgrading to Shimano 12-speed Di2 or maintaining your internal routing setup, this genuine Shimano grommet keeps your system secure and protected.
- Designed for Shimano Di2 systems
- Compatible with EW-SD300 electric wires
- Frame hole size: 7 x 8 mm
- Securely holds internal Di2 wiring in place
- Prevents cable chafing and frame damage
- Durable rubber construction
- Quick and easy installation
- Clean and professional internal cable routing finish
- Genuine Shimano replacement part
Complete your Shimano Di2 internal routing setup with the EW-GM300-M grommet — small in size, essential for long-term protection and flawless electronic shifting performance.
Choose options
Let customers speak for us
Had my earlier pair exchanged due to size issue. They recommended me this pair and am very happy with it. The exchange was very smooth and no issues at all. Happy to have bought from them.
It’s nice to have a single, fuss-free lube that I can use across my commuter, road, and gravel bikes. Thanks to this large refill bottle I’ll happily continue with RNR Gold for a while longer.
Item was nicely packed and included some grease with it. Easy installation as well. Appreciate the great service and helpful advice too
Great range of bicycle products suited for every need. Friendly and very proactive staff
Easy to install and more rigid.
All white design, nice and comfortable. Good quality and pricing, will definitely recommend. Thank you.
%20is%20a%20precision%20rubber%20insert%20designed%20to%20securely%20hold%20Shimano%20Di2%20EW-SD300%20electric%20wires%20in%20your%20bike%20frame.%20Installed%20directly%20into%20the%20frame%E2%80%99s%20cable%20...){kind=link}
