BSA Piston M20 +020 NOS
pc1.1-66-1025/020-6BSA Piston M20 +020
82.5mm +020
no piston rings
no gudgeon pin
no circlips
new, old stock
BSA Piston M20 +020
82.5mm +020
no piston rings
no gudgeon pin
no circlips
new, old stock