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🔗 Lock in your ride’s power with KMC’s S1 Wide Chain—strength, style, and zero compromises.
The KMC Unisex S1 Wide Chain is a premium 1/8” single-speed chain designed for BMX, fixie, and commuter bikes. Featuring KMC’s Rust Buster anti-corrosion coating, it offers exceptional resistance to moisture and road salt, extending chain life and reducing maintenance. Its wide profile ensures enhanced durability and stability under high torque, while chamfered inner plates provide a smooth, quiet ride. Supplied with a Snap-On master link, it enables quick, tool-free installation. Backed by a 2-year warranty, this alloy steel chain is engineered for reliable urban cycling performance.





| ASIN | B07J384P9N |
| Best Sellers Rank | 4,401 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 12 in Cycling Chains |
| Brand | KMC |
| Country Of Origin | China |
| Customer Reviews | 4.3 4.3 out of 5 stars (460) |
| Global Trade Identification Number | 04715575891187 |
| Included Components | 1x Chain & joining link |
| Item Length | 1422.4 Millimetres |
| Item Type Name | Single Speed Chain |
| Item Weight | 100 Grams |
| Load Capacity | 2.5E+2 lbf |
| Manufacturer | KMC |
| Manufacturer Part Number | BS1WRB112 |
| Material | Alloy Steel |
| Model Number | BS1WRB112 |
| Pitch | 0.5 inches inches |
| Plate Thickness | 8.6 Millimeters |
| Product Warranty | 2 year manufacturer |
| Recommended Uses For Product | Single Speed, Internal Gear, BMX, Rail, Fixed Gear Systems |
| Roller Diameter | 0.5 Inches |
| Specification Met | [Other] Metal, likely meets basic industry standards for bicycle roller chains |
| Strand Type | Single |
| Unit Count | 1.0 count |
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