
Product Description
- Rear Derailleur for 1 x 6 / 7 Speed
- Direct Attachment Type
- Super Short Cage
- Max. Sprockets: 32T
- Total Capacity: 21T
- Model No.: RD-M21SS
- Cassette Compatibility: 6 / 7 Speed
- Cage Type: Super Short Cage
- Front Chainring: Single
- Max. Sprocket: 32T
- Min. Sprocket: 11T
- Total Capacity: 21T
- Guide Pulley: Engineering Composite with Steel Bushing
- Tension Pulley: Engineering Composite with Steel Bushing
- Bracket Body: Resin / Black
- Mount Type: Direct Attachment
- Bracket Pivot Seal: N
- Plate Body: Resin / Black
- Plate Pivot Seal: N
- Outer Link: Resin Steel
- Inner Link: Black Steel
- Link Pin Bushing: N
- Outer Plate: Black Painted Steel
- Inner Plate: Black Painted Steel
- Weight: 241g
- Compatibility: Shimano 6 / 7 Speed Rear Derailleur Compatible
Availability & Sizing
Product Details
Price History
Historical Data
Last 1 days of price history
| Date | Low Price | High Price | Average Price | Vendors |
|---|---|---|---|---|
| May 8, 2026 | $11.99 | $11.99 | $11.99 | 1 |
Price Statistics
Description
Rear Derailleur for 1 x 6 / 7 Speed Direct Attachment Type Super Short Cage Max. Sprockets: 32T Total Capacity: 21T Model No.: RD-M21SS Cassette Compatibility: 6 / 7 Speed Cage Type: Super Short Cage Front Chainring: Single Max. Sprocket: 32T Min. Sprocket: 11T Total Capacity: 21T Guide Pulley: Engineering Composite with Steel Bushing Tension Pulley: Engineering Composite with Steel Bushing Bracket Body: Resin / Black Mount Type: Direct Attachment Bracket Pivot Seal: N Plate Body: Resin / Black Plate Pivot Seal: N Outer Link: Resin Steel Inner Link: Black Steel Link Pin Bushing: N Outer Plate: Black Painted Steel Inner Plate: Black Painted Steel Weight: 241g Compatibility: Shimano 6 / 7 Speed Rear Derailleur Compatible
Additional Info
Vendor Comparison (1 stores)
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| Vendor | Price | Stock | Last Updated | Action |
|---|---|---|---|---|
Sports Basement Best Price | $11.99 | Out of Stock | 5/8/2026 | View Product → |
Available Sizes & Variants (1)
| Variant | Size | Color | Price | Status | Stores | Buy |
|---|---|---|---|---|---|---|
Black / One Size | One Size | Black | $11.99 $12.99 | In Stock | 1 store | Buy |





