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BSA/Triumph Piston B25 & TR25 Std.
BSA/Triumph Piston B25 & TR25 Std.

BSA/Triumph Piston B25 & TR25 Std.

BOA85

BSA/Triumph Piston B25 & TR25 Std.

Bore: 67mm

Piston Clearance 0.12mm or 45thou

comp. ratio 9.25:1

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