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BSA/Triumph Piston B25 & TR25 Std.

Bore: 67mm
Piston Clearance 0.12mm or 45thou

Compr. Ratio 9.25:1 including gudgeon Pin, piston rings and circlips
Article number
BOA85.
Price excl. VAT
€ 137,50
BSA/Triumph Piston B25 & TR25 Std.

Bore: 67mm
Piston Clearance 0.12mm or 45thou

comp. ratio 9.25:1 with rings, circlips and gudgeon pin
Article number
BOA85
Price excl. VAT
€ 137,50
BSA/Triumph Piston B25 & TR25 +020

Bore: 67mm +020 (=67.5mm)
Piston Clearance 0.12mm or 45thou
comp. ratio 9.25:1 with piston rings, circlips and gudgeon pin
Article number
BOA86
Price excl. VAT
€ 137,50
BSA/Triumph Piston B25 & TR25 +060

Bore: 67mm +060 (=68.5mm)
Piston Clearance 0.12mm or 45thou

comp. ratio 9.25:1 with piston rings, circlips and gudgeon pin
Article number
BOA88. 40-0970/ 060. 40-970
Price excl. VAT
€ 137,50
Triumph Piston TR6,T120,T110 Pre Unit +060
with piston rings, circlips and gudgeon pin
71mm +060= 72.5mm
comp. rat.: 7:1

for Alloy Head
if you wish to lower the compression of an iron head engine, these pistons can be used. Giving approx. 6.76:1
Piston Clearance 0.12mm or 45thou

Made in England Price per pair Please look at all pictures
Article number
70-3610 / 060. E3610.
Price excl. VAT
€ 121,88
High Gear Triumph 5- Speed

Made in England

to be fitted with bearing number 60-4100
This part replaces 57-4404
Article number
57-4780.T4780.57-4404.T4404
Price excl. VAT
€ 64,58