Shimano EW-GM300-M Di2 Grommet – 7x8 mm
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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.
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The shop attendant is polite and very helpful . Overall , a pleasant experience
Good service
First time using this as i was using another plant based degreaser. Used it to remove all the lubricant on my ebike drive train to prep it was use of waxed chain.
Perform well as describe. I only need to use it 2x to get rid all existing lube n dirt.
Highly recommended
Got this to wax it and then replace it on my stock kmc chain on my ebike. Wax is the way for me than normal chain lubrication.
A bit hard to break the chain to my desire length but once i passed that stage, all smooth.
Performance was good and no more black stain on my socks or hands.
Excellent service
And great advice on bike safety
As always, service was excellent. Service staff were efficient and friendly. Thank you
👍
Did my yearly full bike service for my BMC road bike. When I picked up the bike it was like new. Nothing to complain about. Definitely a good value for price paid.
Comfortable, light, and great ventilation! Loving it so far.
Great item and comfortable
A great clean mount. Shipping is fast
Perfect fit nice pair of shoes highly recommended
Service is fast and efficient.
This place is my go to for me since its beside my office.
Great guys, good stuff
Awesome
I'm very happy with my purchase.
Everyone in the shop was very friendly and polite.
I don't have the person named who served me. But he was bc very very kind.
Thank you all.
