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BSA B40 Piston Ring Set / Piston Rings STD Measurements see last pict. or techn. data

BSA D5/7 Piston Ring Set / Piston Rings Std Thickness = 3/32" = 3.3 mm
Depth = 2 mm Made in England

AJS / Matchless Piston Ring Set / Piston Rings STD
AJS Model 18
Matchless G80
500cc
STD = 82.55 mm Oilring 1/8 thick x 1/8"  wide 2 Top rings 1/16  thick x 1/8 wide

AJS / Matchless Piston Ring Set / Piston Rings +020
AJS Model 18
Matchless G80
500cc
STD = 82.55 mm +020Oilring 1/8 thick x 1/8"  wide2 Top rings 1/16  thick x 1/8 wide

AJS / Matchless Piston Ring Set / Piston Rings +040
AJS Model 18
Matchless G80
500cc
STD = 82.55 mm +040 Oilring 1/8 thick x 1/8"  wide 2 Top rings 1/16  thick x 1/8 wide

AJS / Matchless Piston Ring Set / Piston Rings +060
AJS Model 18
Matchless G80
500cc
STD = 82.55 mm +060   Oilring 1/8 thick x 1/8"  wide 2 Top rings 1/16  thick x 1/8 wide

BSA Piston nos
Compression High: 26mm
Gudgeon Pin DM: 16mm
Piston DM outer: 63mm
Made in England

for restoration - no warranty  Please view alll pictures
 

Heplex BSA Piston NOS +020. 71,5 mm
I.D12 65/806 B
8/55 Front
F55 PAT.N° 616820 3602 AM 413

Compression Hight: 30mm
Gudgeon Pin DM: 19mm
Piston DM: 71.5mm

for restoration - no warranty please view ALL pictures not all pre war 350 cc Mod.

Hepolite BSA Piston 10962 NOS
PAT N°616820 3602 AM4/3
71mm = STD
Compression High: 30mm
Gudgeon Pin DM: 19mm no piston rings no gudgeon pin no circlips Please view ALL pictures not all pre War 350 Mod.

Triumph Racing Piston 8421 Std Pair
1939-40, T100. 9.75:1
63mm
Gudgeon Pin with Bush DM: 21mm#
with Piston Rings
no Circlips

for restoration - no warranty

Hepolite Royal Enfield Type C Piston Std NOS

Heplex 4879 634AM 405 J28 64mm

With Piston Rings, Gudgeon Pin and Circlips

New, old stock

BSA Piston Ring Set / Piston Rings Bantam D3 +020. 150cc
STD= 57mm +020= 57.5mm

BSA Piston Ring Set / Piston Rings A7 +060
1947-50 62mm= STD Size f. Triumph
6 pieces

Triumph T20 Piston Rings / Piston Rings Set +040. Tiger Cub.Please look at all pictures 

Royal Enfield Piston 56mm Std. Heplex
Including gudgeon pin and piston rings
P5068T
56mm
Compression High: 38mm
Gudgeon Pin DM: 1/2"  12.7mm

AJS/Matchless Piston Ring Set/ Piston RingsHepolite
69.849 mm 2 3/4" +020
248 cc OHV
1958-1964

AJS 14 Saphire 248 cc, OHV, 1959-64
AJS 14 CS 248 cc, OHV, 1958-60
Matchless G2, Monitor, 248 cc, OHV 1959-64

AJS/Matchless 248 cc Piston Ring Set / Piston Rings +010Hepolite
69.849 mm 2 3/4" +010
248 cc OHV
1958-1964

AJS 14 Saphire 248 cc, OHV, 1959-64
AJS 14 CS 248 cc, OHV, 1958-60
Matchless G2, Monitor, 248 cc, OHV 1959-64

AJS/Matchless 248 cc Piston Ring Set / Piston Rings +030Hepolite
69.849 mm 2 3/4" +030
248 cc OHV
1958-1964

AJS 14 Saphire 248 cc, OHV, 1959-64
AJS 14 CS 248 cc, OHV, 1958-60
Matchless G2, Monitor, 248 cc, OHV 1959-64

AJS 248 cc Piston Ring Set / Piston Rings +040Hepolite
69.849 mm 2 3/4" +040
248 cc OHV
1958-1964

AJS 14 Saphire 248 cc, OHV, 1959-64
AJS 14 CS 248 cc, OHV, 1958-60
Matchless G2, Monitor, 248 cc, OHV 1959-64

AJS/Matchless 248 cc Piston Ring Set / Piston Rings +050Hepolite
69.849 mm 2 3/4" +050
248 cc OHV
1958-1964

AJS 14 Saphire 248 cc, OHV, 1959-64
AJS 14 CS 248 cc, OHV, 1958-60
Matchless G2, Monitor, 248 cc, OHV 1959-64

AJS/Matchless 248 cc Piston Ring Set / Piston Rings +060Hepolite
69.849 mm 2 3/4" +060
248 cc OHV
1958-1964
New, old stock

AJS 14 Saphire 248 cc, OHV, 1959-64
AJS 14 CS 248 cc, OHV, 1958-60
Matchless G2, Monitor, 248 cc, OHV 1959-64

AJS/Matchless  348cc Piston Ring Set / Piston Rings STD 348 cc OHV 8, Senator CR 7,4:1  1960/62 348 cc OHV G5, Matador CR 7,4:1 1960/62

72 mm/2.8346" STD slight rust

AJS Piston Ring Set / Piston Rings 350 cc 1962-63
74.016 mm / 2.914"

AJS Piston Ring Set / Piston Rings 350 cc 1962-63
74.016 mm / 2.914" + 010"

Bsa Sloper Piston. 500cc. 1925-31 +040=DM 81 mm
Measurements see last pict. - please look at all pictures gudgeon pin 15,87 mm  5/8"

S25,S26,S27,S28,S29,S30- 9,S31-7 493cc ,SV 1925-31 Piston Clearance 0.12mm or 45thou