The Shimano SF-1200 is a high-quality single-speed freewheel designed for standard threaded hubs. Constructed from hardened alloy steel, it offers exceptional longevity and resistance to wear, making it a reliable choice for road, hybrid, or mountain bike single-speed conversions.
This 20T version is compatible with wider 1/2" x 1/8" chains, ensuring a robust drivetrain setup. With its standard English threading and smooth internal ratcheting mechanism, the SF-1200 provides the consistent performance and durability that Shimano is known for.
Quick Facts
| Feature |
Specification |
| Tooth Count |
20T |
| Thread Type |
Standard English (1.37" x 24 TPI) |
| Chain Compatibility |
1/2" x 1/8" |
| Material |
Hardened Alloy Steel |
| Weight |
Approx. 166g |
| Reference Number |
SF-1200 / ISF120020 |