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69 mm bore, +20 = 69.5 mm
Price per Pair
7:1
Triumph, 5Ta
Pistons
500cc
500 Unit Low Comp

Piston Clearance 0.12mm or 45thouwith Piston rings, circlips and gudgeon pin
 

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

Norton Piston 16 H +20, Original, Wellworthy NOS

Norton 600cc 650cc Piston. Pair GPM +20
68,5 mm Diameter, new
at 600 cc Compr. Ratio: 7.4:1
at 650 cc 8.25:1
middle gudgeon pin-top: 40 mm
Gudgeon pin diameter: 17. 5 mm - 11/16"

Piston Clearance 0.12mm or 45thou
297 g weight
Mod. 77 v- 1956-58
Mod. 99 1956-62
Nomad 1968
650 1960-63
Mod. 99SS 1961-62
650 SS 1961-70
including gudgeon Pin, piston rings and circlipsprice per pairPlease look at all pictures
 

Hepolite Piston
61.529 mm,
new, No. 17952

no rings,

with pin, good

with circlips

Hepolite, 67 mm, std., new, No.5738
Pin diam. 19 mm
Compr. hight: 28 mm

with rings, light rust

pin good

with circlips

Triumph Piston 250 cc, OHV, Hepolite
71 mm, std., new, No. 15897

no rings, pin or circlips

for restoration - no warranty

 

1946-1953
STD= 85 mm
Hep No. is 11341Compr. ration 6.8:1
Compression Height: 31mm
Piston top - Gudgeon pin top: 22 mm
Gudgeon pin diameter: 19 mm

to be used with flywheels
65-1235 und 65-1235
to be used with conrod 66-482
Piston Clearence 0.12mm or 45thou
long conrod version
with Piston Rings, Circlips and Gudgeon Pin

Compr. ratio 7:1, new,
std. = 71 mm
price per pr
Cast Iron Head - please do not fit to alloy head
Pre Unit
6T
71mm
Thunderbird.
650cc

Piston Clearance 0.12mm or 45thouwith Piston Rings, Circlips and Gudgeon pinmeasurements see techn. data

Hepolite, 61 mm, std., new, No. 4489

OHV
Model: Red Hunter, LG, LH, De luxe, OG, OH
C.R: 7 to 1
STD=61mm

with pin, light rust
new,old stock

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

55 mm, std., new, No. 3520

with rings, light rust
with pin, rust
no circlips

62 mm, std., new, No. 5773

with rings, light rust
no pin,
no circlips

OD: 63.5mm
ID: 59.5mm
160 mm long

No. FS1033

light rustPlease view ALL pictures

New Impirial 250cc.Model 30. 30DL.67 mm, + 60, new, No. 4049

no rings
with pin, good
no circlips required

58,8 mm, 2 5/32", new, No. 4288

with rings, light rust
with pin, rust
no circlips

JAP Piston 79.7ccm Mod.80 Type2 +010
45.987mm +020
Model 80, Type 2, Type 71, C80, RS80, Type 2, Two Stroke , Two Ports in middle of skirt. (For Engines with inlet and exhaust ports in line with crankshaft)
with Gudgeon Pin
new, old stock

62 mm std., new, No. 15162

with rings, light rust
with pin, good
with circlips

66.674 mm, + 30, new, No. 15551

no rings
with pin, good
with circlips

Villiers Piston +010
52mm +010
Hepolite Heplex

62 mm, std., new, No. 5773

with rings, light rust
with pin, rust
no circlips

JAP Piston Std.
45.987mm
Hepolite Heplex

52.8 mm, new, No. 65255

with rings, light rust
with pin
no circlips

JAP Piston
Hepolite
51.5 mm +060 = 53mm
incl. gudgeon pin /rusty
incl. piston rings

56 mm, std., new, No. 16431

with rings, light rust
with pin, light rust
no circlips

Price per Pair