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Triumph 3TA/T90/T21 Pistons STD.
58.25 mm
Price per Pair
Made by GPM, Italy
Compr. ratio 7,5:1

Piston Clearance 0.12mm or 45thou including gudgeon Pin, piston rings and circlips

Triumph Piston 750cc T140V/TR7V +20
76mm+20,
compr. ratio: 7,4:1,
price per Pair
Low comp.
gudgeon pin diameter: 19 mm
Piston Clearance 0.12mm or 45thoucomplete with piston rings, circlips and gudgeon pin

Triumph Pistons 750cc T140V/TR7V Std.
compr. ratio 7,4:1,
76mm std
Price per Pair
low compression
gudgeon pin diameter 19 mm
complete with piston rings, circlips and gudgeon pin
Piston Clearance 0.12mm or 45thou

Triumph Pistons Hepolite 500cc. Daytona std.
T100R, T100T unit
9:1, STD, 69mm
Tiger 100 Unit
Daytona
500cc
Piston Clearance 0.12mm or 45thou
Pin Diameter: 17.45mm

to be fitted after 1967with Piston Rings, Circlips and Gudgeon PinPrice per Pair

Pre Unit TR6,T120,T110 650cc Ratio 7:1,
+20 = 71.5 mm
price pair
Alloy Head Pre Unit
Triumph.

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 with Piston Rings, Circlips and Gudgeon Pin

compression ratio 7:1,
STD=71mm
price per Pair
Triumph, TR6,T120,T110 650cc
Alloy Head pre unit + Iron 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
complete with Piston Rings, Gudgeon Pin and Circlips

Triumph 3TA/T90/T21 Pistons +060
STD. 58.25mm +060 (59.75mm)
Price per Pair

Piston Clearance 0.12mm or 45thou
Made by GPM, Italy
Compr. ratio 7,5:1 including gudgeon Pin, piston rings and circlips

Piston Triumph +60
T140V.TR7V 750cc
STD = 76mm
+60 = 77.5 mm
8.6:1
Price per Pair

Piston Clearance 0.12mm or 45thouincluding gudgeon Pin, piston rings and circlips

Triumph Piston 750cc T140/TR7V +60
compr. ratio 7,4:1,
76mm std / +60= 77.5mm
Price per Pair
low compression
gudgeon pin diameter: 19 mm

Piston Clearance 0.12mm or 45thoucomplete with piston rings, circlips and gudgeon pin

BSA/Triumph Piston B25 & TR25 +040Gugin pin 11/16" = 17.5mmCompression hight 29.75mm

Bore: 67mm +040 (=68mm)including gudgeon Pin, piston rings and circlipsPiston Clearance 0.12mm or 45thou

comp. ratio 9.25:1

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

Triumph Thunderbird Pistons +60 /Pair

STD= 71mm +060" = 72.5 mm
Gudgeon Pin. 17.4mm
Compression Height: 33.3mm
for Cast Iron Head - please do not fit to alloy head

complete with gudgeon pin, piston rings and circlips

Piston Clearance 0.12mm or 45thoumeasuremetns see techn. dataPrice per Pair

Triumph 500cc T100T Piston Pair to be fitted after 1967 Made in England including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou Price per pair

Triumph T100T Piston 500cc  +060 PairGudgeon pin Diamter OD: 11/16" = 17,46 mmincluding gudgeon Pin, piston rings and circlipsPiston Clearance 0.12mm or 45thouMade in EnglandPrice per pair

Triumph T20s Tiger Cub. Piston 9:1 +020 63,5mm + 0,5mm piston clearance 0,12 mm or 45thou including gudgeon pin, circlips and piston rings

Triumph T20 Piston +060 7:1CR

STD= 63mm +060 = 64.5mm C.P.141 E3358.E656.E3048.E3387E1750.E1767 12581 including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou

Triumph Piston 1932-42 349cc SV 3S.3SE.3SC.3SW.3HW. WD Deluxe CR 5.3:1 STD / NOS

STD= 70mm (69.91 as per marking on top of piston)Gudgeon Pin Diameter: 3/4"  = approx. 19 mmCompr. hight, see 5th picture pleaseno gudgeon pinno piston rings

Triumph Piston 1932-42 349cc SV 3S.3SE.3SC.3SW.3HW. WD Deluxe CR 5.3:1 STD / NOS

STD= 70mm (69.91 as per marking on top of piston) Gudgeon Pin Diameter: 3/4"  = approx. 19 mm Compr. hight, see 5th please no gudgeon pin, no piston rings  

Triumph 3TA/T90/T21 Piston STD.
58.25 mm
Compr. ratio 7,5:1

Piston Clearance 0.12mm or 45thou

with Piston Rings

Triumph 3T JP Piston Pair + 060. 1946-Piston Clearence 0.13mm or 45thouCR 6.3:1with Piston Rings, Circlips and Gudgeon PinPlease see all pictures    

Triumph 3T Piston 349 cc OHV 1945-51  Pair STD=55 mmCR 6.3:1Piston Clearance 0.12mm or 45thouincluding Piston Rings, Circlips and Gudgeon PinDelivery time approx. 10 daysPlease look at all pictures   

Triumph 3T JP Piston Pair + 020 = 55.5mm 1946-Piston Clearence 0.13mm or 45thouCR 6.3:1with Piston Rings, Circlips and Gudgeon PinDelivery time approx. 10 daysPlease see all pictures 

Triumph 3T JP Piston Pair + 040 = 60mm 1946-Piston Clearence 0.13mm or 45thouCR 6.3:1with Piston Rings, Circlips and Gudgeon PinDelivery time approx. 10 daysPlease see all pictures 

BSA A75. Triumph T150 Piston +060 Set Cast Alloy060= 68.5 mmCompression ratio 9:1including gudgeon Pin, piston rings and circlipsPiston Clearance 0.12mm or 45thouset of 3Please look at ALL pictures

Triumph.
T100R, T100T unit
9:1,
69mm +040 = +1mm, 70 mm
Tiger 100 Unit
Daytona
500cc
Piston Clearance 0.12mm or 45thoucomplete with Piston Rings, Circlips and Gudgeon Pin

to be fitted after 1967price per pair