Industry Nine Hydra 2 Freehub Body - Micro Spline w/cap CheckoutTitle=TRP RD-M9050-L EVO12 Rear Derailleur - 12-Speed (mm) 21 Manufacturer Number 61801

(mm) 21 Manufacturer Number 61801 (6801) Material Ceramic Thickness 5

Refined gear engagement

100% Surly proprietary 4130 chromoly tubing

7 C: Down Tube Length (CM) 59 C: Down Tube Length (IN) 23

Bar Clamp Diameter (mm) 22 - 31

Industry Nine Hydra 2 Freehub Body - Micro Spline w/cap CheckoutTitle=TRP RD-M9050-L EVO12 Rear Derailleur - 12-Speed (mm) 21 Manufacturer Number 61801Replacement and conversion freehub bodies Complete freehub body kits with bearings, pawls and springs Freehub bodies fit 2025+ Hydra2 rear hubs Note: when swapping from Micro Spline to XD HG freehubs bodies, XD HG specific driveside end cap XN is required TECH SPECS Model Hydra2 Description Micro Spline Complete Freehub