HUB RR S/A 3sp XLRD3 DRUM 90mm 36 SL w/TRIM KIT/THUMB-SHIFTER SLS30-T 163/118mm 18T NON-ROTARY Classic 3-speed internal geared 90mm drum brake hub with gear ratio of 177%. A356 Aluminium hub shell. Gear steps of 33% and 33%. Includes trim kit, SLS30 thumb shifter and 18t sprocket. Item Specifications: Material: Aly, Color: Sil, Brake Type: DRUM, Use: RR, Hub Drilling: 36H, Wt: 1720g, CTF-R: 34, Spacing / Axle: B/O 3/8, LTF-L: 41, CTF-L: 18, LTF-R: 25, PCD-L: 109, Gears: 3s Int, PCD-R: 109, OLD: 118,