OEM OTK, Kosmic,FA, Exprit, Tony Kart 13mm master cylinder seal. 8mm ID, 5mm height. CURRENTLY only available in a kit, 13mm PISTON WITH SEALS (BWD / BSD / SA2 / BS3-7). CYLINDER BALL HONES available separately to clean up cylinder bores.
OEM OTK, Kosmic,FA, Exprit, Tony Kart 13mm master cylinder seal. 8mm ID, 5mm height. CURRENTLY only available in a kit, 13mm PISTON WITH SEALS (BWD / BSD / SA2 / BS3-7). CYLINDER BALL HONES available separately to clean up cylinder bores.