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Ariel Piston 350cc O.H.V. +040 = 73 mm
compr. ratio 6.2:1
Piston ring Gap: 0,5mm
Piston Clearence 0.13mm or 45thou
Gudgeon Pin: 20.5 mm
Total height: 74mm Weight ca. 412 g measurements see last pict. - please look at pictures
JP including gudgeon Pin, piston rings and circlips

Ariel Piston Red Hunter 500cc +060 = 83,3 mm  1947-58
STD = 81,8 mm
Piston Clearence 0.12mm or 45thou

JP Piston OHV Red Hunter VG, VH, VCH, VHA Compression ratio 6.3:1 incl. piston rings, gudgeon pin and circlips Measurements see last pict. and techn. data please 511 g incl. gudgeon pin

Ariel Piston Red Hunter 500cc +020 = 82.3 mm
STD = 81,8 mm
Piston Clearence 0.12mm or 45thou

JP Piston OHV Red Hunter VG, VH, VCH, VHA Compression ratio 6.3:1 incl. piston rings, gudgeon pin and circlips Measurements see last pict. and techn. data please

Ariel Piston 350cc O.H.V. Std.
compr. ratio 6.5:1

Bore: 72 mm
Piston Clearence 0.13mm or 45thou Piston Gap: 0,5mm
Gudgeon Pin Diameter: 20.5mm
Compression Height: 30.25mm
JP including gudgeon Pin, piston rings and circlips

Ariel Red Hunter Piston 500cc +020 = 82.3 mm
Compression Ratio 7.5 : 1
Make JP OHV Red Hunter, VG, VH Measurements see last picture and techn. data Incl. Gudgeon pin, piston rings, circlips Piston clearance 0,12 mm or 45thou

 

Ariel Red Hunter Piston 500cc +040 = 82.8 mm
Compression Ratio 7.5 : 1
Make JP OHV Red Hunter, VG, VH Measurements see last picture and techn. Data Incl. Gudgeon pin, piston rings, circlips Piston clearance 0,12 mm or 45 thou 534 g incl. pin, clips and rings

Ariel Red Hunter Piston 500cc +060 = 83.2 mm
Compression Ratio 7.5 : 1
Make JP OHV Red Hunter, VG, VH Measurements see last picture and techn. Data Incl. Gudgeon pin, piston rings, circlips Piston clearance 0,12 mm or 45thou 477 g incl. gudgeon pin

Ariel Piston 350cc O.H.V. +020
compr. ratio 6.5:1
Piston Gap: 0,5mm +020 (=72.5 mm)
Piston Clearence 0.13mm or 45thou

JP including gudgeon Pin, piston rings 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

BSA Piston B33/M33 1954-60 +060=
86.5 mm
Made in Italy
middle gudgeon pin to Crown 48 mm
Piston Clearance 0.12mm or 45thou
for short conrod
Compression Ratio: 7.5:1
65-1613 Conrod 3/4 pin with piston rings, circlips and gudgeon pin

Ariel SV 600cc. 550 cc JP Piston +060. 87.9 mm 1931-1932 550 cc SV. SB21, SB32, Sloper 1932-1932 550 cc SV. VB, VB33 Vertical Engine 1933-1935 550 cc SV. VA, VA4 1936-1958 600 cc SV. VB Gudgeon Pin diameter 13/16“ = 20.5 mm Measurements - please see last picture or techn. Data Made in Australia incl. Piston Rings, Gudgeon Pin and Circlips Piston Clearence 0.12mm or 45thou  

Ariel SV 600cc. 550 cc  GPM Piston +040. 87.4 mm 1931-1932 550 cc SV. SB21, SB32, Sloper 1932-1932 550 cc SV. VB, VB33 Vertical Engine 1933-1935 550 cc SV. VA, VA4 1936-1958 600 cc SV. VB Gudgeon Pin diameter 13/16“ = 20.5 mm Measurements - please see last picture or techn. Data Made in Australia incl. Piston Rings, Gudgeon Pin and Circlips Piston Clearence 0.12mm or 45thou

Ariel SV 600cc. 550 cc JP Piston +020. 86.9 mm 1931-1932 550 cc SV. SB21, SB32, Sloper 1932-1932 550 cc SV. VB, VB33 Vertical Engine 1933-1935 550 cc SV. VA, VA4 1936-1958 600 cc SV. VB Gudgeon Pin diameter 13/16“ = 20.5 mm Measurements - please see last picture or techn. Data Made in Australia incl. Piston Rings, Gudgeon Pin and Circlips Piston Clearence 0.12mm or 45thou

Triumph 6T pistons +20 650cc
Pre Unit
f. Cast Iron Head
7:1
71mm +20=71.5mm
for Cast Iron Head - please do not fit to alloy head
complete with gudgeon pin, piston rings and circlips

Piston Clearance 0.12mm or 45thou measurements see techn. data Price per pair

Triumph Piston T140V/TR7V 750cc +020
76mm+020 = 76.5mm
8.6:1
Price per Pair

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

BSA/Triumph Piston B25 & TR25 +040

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

comp. ratio 9.25:1

Ariel SV 600ccm GPM Piston +030
87.2mm

incl. Pistonrings, Gudgeon Pin and Circlips
Piston Clearence 0.12mm or 45thou

JAP Twin SV Piston Brough Superior/Zenith/Coventry Eagle +040 including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou JP / Price per Pair
STD= 85.725mm
1924-39 Piston
1000cc K Type 1923-29= 85.7 x85
1150cc LT, LTZ,L Type = 85.7 x95

500cc= Model K
85.7mm x 85

550cc = Model L
85.7mm x 95

600cc= Model U
85.7mm x 104

Gudgeon Pin: 13/16" - 20.7mm
Compression Height: 1 5/8" - 41.3mm
Piston Length: 3 1/4" - 82.5mm

JAP Twin SV Piston Brough Superior/Zenith/Coventry Eagle +060 including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou JP / Price per pair
STD= 85.725mm
1924-39 Piston
1000cc K Type 1923-29= 85.7 x85
1150cc LT, LTZ,L Type = 85.7 x95

500cc= Model K
85.7mm x 85

550cc = Model L
85.7mm x 95

600cc= Model U
85.7mm x 104

Gudgeon Pin: 13/16" - 20.7mm
Compression Height: 1 5/8" - 41.3mm
Piston Length: 3 1/4" - 82.5mm

JAP Twin SV Piston Brough Superior/Zenith/Coventry Eagle +030 including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou JP / Price per Pair
STD= 85.725mm
1924-39 Piston
1000cc K Type 1923-29= 85.7 x85
1150cc LT, LTZ,L Type = 85.7 x95

500cc= Model K
85.7mm x 85

550cc = Model L
85.7mm x 95

600cc= Model U
85.7mm x 104

Gudgeon Pin: 13/16" - 20.7mm
Compression Height: 1 5/8" - 41.3mm
Piston Length: 3 1/4" - 82.5mm

Bsa Sloper Piston. 500cc. 1925-31 +020

Measurements see last pict. gudgeon pin 16 mm

S25,S26,S27,S28,S29,S30-
9,S31-7 493cc ,SV 1925-31 Please look at all pictures including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou

JAP Twin Piston STD. / Pair including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou 1000cc OHV
Model KTO
KTOR
STD = 85.7 mm x 85 mm Bore and Stroke
Gudgeon Pin D: 20.5mm
Compression Height: 32.45mm
JP / Price per pair

JAP Twin Piston +040 / Pair with Gudgeon Pin, Piston Rings and Circlips
1000cc OHV
Model KTO
KTOR
STD = 85.7 mm x 85 mm Bore and Stroke +040
Gudgeon Pin: 13/16=20,6mm
Compression Height: 32.45mm Piston Clearance 0.12mm or 45thou JP

JAP Single Cylinder Piston STD. including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou 500cc OHV
Model
KO
KOR
STD = 85.7 mm x 85 mm Bore and Stroke
Gudgeon Pin: 13/16=20,6mm
JP

BSA Piston +040 Pair. 1950-59. also Ariel 1952- 8:1 Compression including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou Price per pair