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:

• Bubba Pawl Kit
• Bubba Hub Axle Kit (Alloy or Steel)
• Bubba Ratchet Ring Kit
• Bubba Hub Endcap Kit

Technical Documentation:

• Download SUNringlé Bubba / Super Bubba Service Manual (PDF)

Service Video Reference: SunRingle and Reynolds Bubba and Super Bubba Rear Hub Service