Specifications
- Patented cogs promote superior shifting.
- Compatible with 7-speed index shifters and Shimano freehubs and drivetrains.
- Weight:
- SR-CS8A:13-28, 343 grams.
- SR-CS8B:12-28, 339 grams.
Features
- Patented sprockets, available on all SunRace cassettes and index freewheels, deliver superior shifting. Computer-designed cogs combine specific ramps with individually angled teeth for smooth, instant drivetrain engagement.
- On conventional cassettes and freewheels, the chain can "ride up" during a gear change. SunRace cassettes and freewheels ease the chain into the right gear quickly and smoothly, so there is less noise and less friction, reducing wear on the cog and chain.
- Cassette and freewheel spacing exactly matches that of Shimano drivetrain systems, simplifying compatibility. SunRace cassette cogs are designed to mount on Shimano-compatible freehubs.
- SunRace freewheels are consistently stable and accurate. The range of freewheels is unmatched in the industry: 8-speed, 7-speed, 6-speed, 5-speed, and 3-speed; index and non-index.
- New "lockring" freewheels use splined cogs that secure with a lockring. The lack of thread-on cogs provides highly accurate spacing and more precise shifting, especially with twist shifters. It's like having cassette performance in a freewheel. Found on models HG80, HG73, GH72, HG61, HG60.
- All cassettes and freewheels are available in the following colors: Chrome, brass, black, gold, nickel and zinc.
| Model | Ratio | Material | Index | Finish | Weight(G) | Packing/shipping | Shimano compatible |
|---|---|---|---|---|---|---|---|
| SR-CS7A | 13-15-17-19-21-24-28 | Steel | Index | Chrome, brass, black, gold, nickel, zinc | 343g | 50pcs./.76 cft 26kg NW/27kg GW | YES |
| SR-CS7B | 12-14-16-18-21-24-28 | Steel | Index | Chrome, brass, black, gold, nickel, zinc | 339g | 50pcs./.76 cft 26kg NW/27kg GW | YES |
Main Products
bicycle bike accessories component