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M20/21
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M20/M21 ENGINE
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TAPPET GUIDE IN/EX
66-1494
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B and M models.
GENUINE BSA New old stock.
TAPPET HEAD IN M20/21
66-1497
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New old stock.
TAPPET HEAD EX M20/21
66-1498
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New old stock.
AIR RELEASE PIPE
66-1685
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New Old Stock
CAM SPINDLE BOLT
66-2007
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SHORT MAGDYNO STRAP
66-2353
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BRITISH MADE, HEAVY QUALITY.
160MM, ZINC PLATED
ENGINE YOKE PLATE BOLT M20/21
66-4098
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New old stock.
OIL PIPE NUT B/M MODELS
66-8332
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M20 HEADBOLTS
BSA187A
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M20 headbolts set >'50
PISTON M20
ZM20
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Various manufacturers
Standard size is 82mm.
Some pistons come with a 4th ring at the bottom.
PISTON FOR M21
ZM21
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Various makers. Please state size needed.
PISTON RINGS M20/21
ZVM20
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STD bore is 82mm
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