281-38183-K002
Compatible replacement freehub for SUNringlé Super Bubba X and Bubba X.
MTB freehubs feature a 6-pawl design to provide higher engagement, maximizing climbing fidelity and acceleration when navigating technical terrain. Conversely, Road freehubs utilize a 3-pawl design to reduce internal rolling drag, optimizing efficiency and speed on smooth pavement.
| Freehub Body Type | Part Number | Pawl Count | Engagement Angle |
|---|---|---|---|
| Shimano HG | 281-38183-K001 | 6 Pawl - MTB | 4° |
| Shimano HG-R | 281-38183-K004 | 3 Pawl - ROAD | 8° |
| Shimano Micro Spline | 281-38183-K003 | 6 Pawl - MTB | 4° |
| SRAM XD | 281-38183-K002 | 6 Pawl - MTB | 4° |
| SRAM XDR | 281-38183-K005 | 3 Pawl - ROAD | 8° |
| Campagnolo N3W | 281-38183-K006 | 3 Pawl - ROAD | 8° |
Replacement Spare Parts:
Technical Documentation:
Service Video Reference: SunRingle and Reynolds Bubba and Super Bubba Rear Hub Service
I am a big fan of the HAYES group and their part brands. I built up my SUNringle wheels and converted the XD FHB to a MS FHB. The quality is top notch and the ease of converting the FHB was smooth sailing. The rear hub sounds great too. Keep up the good work team HAYES. Cheers




