Description
- Performance-engineered for improved cooling, lighter weight, and reduced brake fade under extreme conditions
- Pioneering Wave® design enhances heat dissipation and provides reliable braking even during aggressive or extended use
- Laser-cut and double-disc ground to ensure precise dimensions and ultra-flat braking surfaces for optimal performance
- Ideal for high-performance street bikes, touring bikes, and off-road applications
- Dirt bike rotors are Cryo-Tech™ treated to improve wear resistance by converting retained austenite to martensite for added structural integrity
- Made from 420 high-carbon virgin stainless steel for maximum strength and longevity
Specifications — See Specifications tab for details per part number.
Fits Harley-Davidson: Sportster 21-25
See Fitment tab for complete model listing.
Specifications
17104990 (GBD9017X)
| Material | 420 High-Carbon Stainless Steel |
| Outside Diameter | 260 mm (10-1/4″) |
| Outside Diameter Metric | 260 mm |
| Color/Finish | Silver |
| Model | Wave® |
| Type | One Piece (Fixed) |
| Outside Diameter Imperial | 10-1/4″ |
| Riding Style | Street |
| Units | Each |
| Mounting Position | Rear |
| Product Name | Brake Rotor |
Fitment
GBrakes, also known as G Brakes, is the new name for Galfer and Galfer USA — rebranded in 2025.
21-25 RH1250S Sportster S
Compatible Models: RH1250S Sportster S
Part Numbers
Part Number: 1710-4990 (17104990)
Manufacturer Part Number: GBD9017X
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