Shimano SG-3C40 Nexus Sprocket (18T)
Product ID: 8757063
🔗Fits 1/8" & 3/32" chains
🚲Compatible with 3-tab coaster brakes & internal hubs
⚙️18-tooth precision sprocket
Desertcart purchases this item on your behalf and handles shipping, customs, and support to Sri Lanka.
⚙️ Upgrade your ride with Shimano’s sleek, versatile sprocket — because every gear counts!
The Shimano SG-3C40 Nexus Sprocket (18T) is a precision-engineered bicycle drivetrain component designed for compatibility with 3-tab coaster brakes and internally geared hubs. It supports both 1/8" and 3/32" chains, offering versatile installation options. Lightweight and compact, this sprocket delivers Shimano’s trusted durability and smooth pedaling performance, making it a top choice for serious cyclists seeking reliable upgrades.
| ASIN | B001GSSO1W |
| Best Sellers Rank | #497,479 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #441 in Bike Cassettes & Freewheels |
| Brand Name | SHIMANO |
| Color | silver |
| Customer Reviews | 4.6 4.6 out of 5 stars (30) |
| Date First Available | September 27, 2008 |
| Included Components | Internally Geared Hub Part |
| Item Dimensions LxWxH | 2.75 x 2.75 x 0.25 inches |
| Item Package Dimensions L x W x H | 3 x 3 x 0.1 inches |
| Item Weight | 0.27 g |
| Manufacturer | Shimano |
| Model Name | Nexus & Alfine Cogs |
| Number of Items | 1 |
| Package Weight | 22.68 g |
| Part Number | Y32203420 |
| Size | 18T |
| Style | Internally Geared Hub Part |
| Suggested Users | Unisex-Adult |
| Warranty Description | Limited Warranty |
E**L
quality sprocket
I bought a cruiser bike with a KT coaster brake and KT sprocket. The sprocket was warped and the shape of the teeth was primitive. It was not meshing properly with the chain and making lots of loud ugly noises. The Shimano sprocket was a perfect replacement and everything is working quietly and smoothly.
S**Y
Great
This was one of my early purchases and got me off to a good start delivery on time part perfect cannot fault it everything good, can recommend product and company.
I**N
Works great looks great
Works perfect 👍
L**G
Four Stars
good
R**.
Sure beats the 20 tooth sprocket that came on my ...
Sure beats the 20 tooth sprocket that came on my bike. I needed more gearing for flat and downhill riding.
J**L
Very good!
Very pleased with the item.
L**E
Excellent, higher ratio achieved!
Easy installation, and a perfect swap for my old cog. Moved down to the 16T version and now have some use out of the lower gears on my Nexus SG-8R31 (before they were way too easy). Now it's actually difficult to use the higher gears which was a welcome change.
M**K
Good product
As advertised.
Trustpilot
2 days ago
2 weeks ago