Meron akong Norco Storm 4. Eto specs nung Drive train: FD- Shimano Tourney TX710 RD- Shimano Tourney TX800 Cassette- M5008 11/34T Crankset- Shimano TY301 42/34/24T BB- Cartridge Front shifter- Shimano EZ Fire 500 3 speed Rear shifter- Shimano EZ Fire 8 speed Anong compatible na Shimano groupset. Dito ako sa Canada kaya either Shimano or Sram.    Thanks