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BSA. Ariel.  Fork Bush Circlip.A50. A65. BSA A7. A10 1946-1963B31. B32. B33.B34. Gold Star 1946-1965C10. C11. C11G. C12 M20. M21. M33 from 1946- 

Ajs/Matchless 605cc Pistons Pair Modle 31. G12.CS.G12CSR. Monarch. 0601960 -66 modelsincluding gudgeon Pin, piston rings and circlips

STD = 72 mm+1.5mmm = 73.50mm.
8.5 to 1.
Bore  at 0.12mm or 0.0045".
Make JP.price per pair2.03125” compression height

Ariel SV 600ccm GPM Piston +030 1931-1958.STD=86.38. +030=87,131931-1932 550 cc SV. SB21, SB32, SB31 Sloper1932-1932 550 cc SV. VB, VB33 Vertical Engine1933-1935 550 cc SV. VA, VA41936-1958 600 cc SV. VBGudgeon Pin diameter 13/16“ = 20.5 mmMeasurements - please see last picture or techn. DataMade in Australiaincl. Piston Rings, Gudgeon Pin and CirclipsPiston Clearence 0.12mm or 45thou

Ariel SV 599 cc. JP Piston +020. 1931-1958. STD=86.38, +020= 86.58mm1931-1932 550 cc SV. SB21, SB32, sB31 Sloper1932-1932 550 cc SV. VB, VB33 Vertical Engine1933-1935 550 cc SV. VA, VA41936-1958 600 cc SV. VBGudgeon Pin diameter 13/16“ = 20.5 mmMeasurements - please see last picture or techn. DataMade in Australiaincl. Piston Rings, Gudgeon Pin and CirclipsPiston Clearence 0.12mm or 45thou

Ariel SV 599 cc  GPM Piston +040.  STD=86.38. +040=87.381931-1932 550 cc SV. SB21, SB32, SB31 Sloper1932-1932 550 cc SV. VB, VB33 Vertical Engine1933-1935 550 cc SV. VA, VA41936-1958 600 cc SV. VBGudgeon Pin diameter 13/16“ = 20.5 mmMeasurements - please see last picture or techn. DataMade in Australiaincl. Piston Rings, Gudgeon Pin and CirclipsPiston Clearence 0.12mm or 45thou

Ajs/Matchless 650cc Pistons. STD.1960 -66 modelswith Piston Rings, Gudgoen Pin and Circlips
8.5 to 1.
72mm STD.
Modle 31. CSR. Monarch.
G12. CSR.
Bore Tolerance 0.12mm=0.0045".
JPPrice per Pair

AJS/Matchless 500cc M18 G80 Piston +040 1947-55Compression: 8.5:1including gudgeon Pin, piston rings and circlipsPiston Clearance 0.12mm or 45thouPlease look at all picturesJP Piston Made in Australia

Ariel SV Piston 599 cc. STD.  86.38 mm1931-1932 550 cc SV. SB21, SB32, SB31 Sloper1932-1932 550 cc SV. VB, VB33 Vertical Engine1933-1935 550 cc SV. VA, VA41936-1958 600 cc SV. VB Please look at all pictures - Measurements!JP - Made in Australiaincl. Piston Rings, Gudgeon Pin and CirclipsPiston Clearance 0.12mm or 45thou

AJS/Matchless 650cc Twin Pistons +020 /Pair
STD = 72mm +020 =72.5mm.1960 -66 models 
Bore Tolarance 0.12mm =0.0045".
Make JP.
8.5 to 12.03125” compression heightMatchless G12

BSA Clutch Plate M20,M21,WM20,WD
fits Pre War Bikes BSA 150cc 250cc
Light Weight 350cc 500cc

1-Spring Clutch
M20,M21.WM20,WD,W33-6
OD: 125mm
ID: 91mm
W: 2,4mm

AJS 16 350/500cc Single 1954-59
AJS 500cc 18 1946-59
AJS 650cc 31 Twin 1957-59
AJS 500cc 20 Twin 1951-61
AJS 600cc 30 Twin 1958-59
AJS 600cc 31 Twin 1954-56
MATCHLESS 650cc G.12 Majestic 1958-59
MATCHLESS 350cc G.3 Single 1956-58
MATCHLESS 500cc G.80 Single 1946-59
MATCHLESS 500cc G.9 Twin 1951-61
MATCHLESS 600cc G.11 Twin 1955-59Total length: 93,5 cmFree length: 18,3 cmOuter Length: 69cm

BSA Silver Star, Empire Star M23 500cc Piston +060 1937-40Compression Ratio: 7.2:1Comp. Height: 1.390" (35.32)DBB: 1.377" (35.00)Length: 2.865" (72.78)Rings Comp: 2*1/16"Rings Oil: 1*4mm P OilPin OD: 0,75"Pin Lenght: 2.812STD Bore Size: 82mmincluding gudgeon Pin, piston rings and circlipsPiston Clearance 0.12mm or 45thouPlease look at all pictures

BSA Silver Star, Empire Star M23 500cc Piston +040 1937-40Compression Ratio: 7.2:1Comp. Height: 1.390" (35.32)DBB: 1.377" (35.00)Length: 2.865" (72.78)Rings Comp: 2*1/16"Rings Oil: 1*4mm P OilPin OD: 0,75"Pin Lenght: 2.812STD Bore Size: 82mmincluding gudgeon Pin, piston rings and circlipsPiston Clearance 0.12mm or 45thouPlease look at all pictures

BSA Silver Star, Empire Star M23 500cc Piston STD 1937-40Compression Ratio: 7.2:1Comp. Height: 1.390" (35.32)DBB: 1.377" (35.00)Length: 2.865" (72.78)Rings Comp: 2*1/16"Rings Oil: 1*4mm P OilPin OD: 0,75"Pin Lenght: 2.812STD Bore Size: 82mmincluding gudgeon Pin, piston rings and circlipsPiston Clearance 0.12mm or 45thouPlease look at all pictures

MATCHLESS 650 G12 Majestic 1963-64
MATCHLESS 650 G12 Majestic 1960-62
MATCHLESS 350 G3 Mercury 1960-64
AJS 650 31CSR 1960-66
AJS 650 31 Swift 1960-64
AJS 500 18 1960-64
AJS 350 16 Sceptre 1960-64 Total length: 93,5cmOuter length: 69cmFree length: 19cm

Lucas Classic MA12 12V Large Coil.Oilfilled Ignition Coil. Please look at all pictures. 

Piston Ring Set / Piston RingsVelocette MAC 350cc +.080
suitable for JP and Aerco pistonsPiston ring gap: 4 Thou per inch of borecompression Ring: 1/8" thick, deep: 1/8"
oil ring: 5/36" deep 1/8"
bore: 76mm

Norton Commando 750. 850 cc Swinging Arm Repair Kitincl. part number06-0446x206-0447Pair06-0449x206-0448x206-0453x106-0869x106-0868x106-0873x106-0871x1 Please look at all pictures

Spindle STD. for S-Arm Models 750cc Norton

6.96" long

JAP. J.A.P. Zenith. Brough Superior. Exhaust Nut.
350, 500, 680 cc, Stainless Steel,
Price per Pair,
available singularely
Only Overhead Valve, Not Sidevalve!

Outside Diameter Nut Hexagon 56 mm
Inside Diameter approx. 49,2 mm
20 TPI
Please look at all pictures
Made in England

Triumph Amal Plate Mountsflexible mountingMade in EnglandPlease look at all pictures

Norton Dominator /650SS/ Atlas Exhaust Pipes
1 3/8" - 38mm
Swinging Arm
650/750cc 1962 on
Matchless G15
Norton N15
chromed
Made in England

Gear Change Plunger Spring Quadrant Triumph Various

Made in England

Amal Carburettor 289AB Puch Mod. SG-SS 250 cc B/F 1959 with Banjo. Made in UK. Needle Jet 106. Valve 3. Main 220. Air Intake internal Bore:  1 1/8"  28,57 mmClip Fitting 1 1/4"  31,75 mmPlease look at all pictures. 

Triumph Seat T140 Electric Start with Battery Recess
Standard Model
L: 670 mm
W: 295 mm
H: 110/150 mmMade in EnglandPlease look at all pictures