A 7-speed bike freewheel/cassette sprocket typically has a range of tooth counts, often between 11-28T or 13-28T, and is designed for mountain bikes or other bikes with a cassette hub. It's typically made of stainless steel or hardened steel for durability and corrosion resistance. The specific number of teeth on each sprocket within the cassette will vary, but common configurations include 11-13-15-18-21-24-28 or 13-15-17-19-21-24-28.
Here's a more detailed breakdown:
- Speeds: 7-speed.
- Type: Cassette freewheel, designed for a cassette hub.
- Material: Often stainless steel or hardened steel.
- Weight: Varies, but can be around 430g.
- Tooth Count: Common configurations include 11-28T or 13-28T.
- Compatibility: Designed for mountain bikes and other bikes with a cassette hub.
- Features: Smooth shifting, low noise, and durable construction.
- Installation: Requires a compatible cassette hub and potentially specific tools for installation and removal.
- Brands: Common brands include Shimano, Sunrace, and others.
When selecting a 7-speed freewheel/cassette, consider:
- Your existing hub: Ensure it's compatible with a 7-speed cassette.
- Your riding style: Choose a tooth count that suits your typical terrain and preferred gear ratios.
- Durability and material: Opt for a freewheel made from durable materials like hardened steel for longevity.