五通中軸

BC1.37” x 24T.
SCM 435 Cr-Mo.
Phosphated cups, barrel polished sheath. TW/CN

BC1.37” x 24T.
Boron steel.
Black cups & sheath.

BC1.37” x 24T.
Boron steel.
Phosphated cups, barrel polished sheath. TW/CN
VP-BC73C for chain guard stay mount plate. TW/CN
VP-BC73A Cold forged aluminum cups. TW/CN
VP-BC73E for front derailleur BB mount plate. TW/CN
VP-BC73T Axle with chainline stopper ring. TW/CN

BC1.37” x 24T.
SCM 440 hollow Cr-Mo.
Anodized chromica aluminum sheath and cups. TW
MB-604 4 sealed bearings for downhill. TW

BC1.37” x 24T.
Boron steel.
Barrel polished sheath,
phosphated cups. TW/CN

BC1.37”x 24TPI.
Caged (1/4”x9). TW/CN

FOR BMX ONE-PIECE CRANK

UNF24T.
Caged (5/16”x9).
Black coating/UCP.
283g. TW/CN

SEALED BEARING WITH ALUMINUM SHEATH/ COLD-FORGED STEEL CUPS

• BC1.37
• Boron steel
• Phosphated cups, anodized sheath