SRAM Hub Bearing Set Front includes 2-23327 For X0/Rise 60 B1/Roam 30/Roam 40/Rail 40 MFPN=FS0001 The Melvin uses two pulleys

The Melvin uses two pulleys just like a rear derailleur which gives it 20 teeth of chain wrap

}Wheels Manufacturing Derailleur Hanger - 45

}SRAM X-Sync 2 Eagle Cold Forged Direct Mount Chainring 30T Boost 3mm Offset

}Renthal Apex 35 Stem - 40mm 35 Clamp +/-6 1 1/8" Aluminum Black/Gold

SRAM Hub Bearing Set Front includes 2-23327 For X0/Rise 60 B1/Roam 30/Roam 40/Rail 40 MFPN=FS0001 The Melvin uses two pulleysSRAM Hub Bearing Set Front (includes 2 23327) For X0 Rise 60 (B1) Roam 30 Roam 40 Rail 40. Original equipment sealed bearings fit many SRAM wheels and hubs. Replacement OE bearings TECH SPECS Bearing O. D. (mm) 32 Bearing I. D. (mm) 23 Material Steel Thickness 7