350cc OHV Model 3-5 1934-35
350cc OHV Model 3-2 1934-35
350cc OHV Model 3-5 1936
500cc OHV Model 5-2, 5-4 1934-36
500cc OHV Model 5-5 1934-36
500cc OHV Model Tiger 90 1936
500cc OHV Model 5H 19347-39
500cc OHV Model Tiger 90 1937-39
550cc SV Model 5-1, 5-3 1934-35
550cc SV Model 5-1, 5-3 1936
Made in England
BSA B44 Piston Ring Set / Piston Rings STD. 79mm 1/16" x 2 1/8" x 1 fits also Norton 16H, ES2, Model 18 Original Piston check thickness of rings Thickness: 3,11mm/1,58mm
BSA B44 Piston Ring Set / Piston Rings +060
also fit the Norton 16H,ES2 and Model 18 Original Piston
+060 = 80.5 mm
please check thickness of rings
1/16" - 1.6mm
Oil ring: 1/8" - 3.14mm
BSA B44 Piston complete
+040 = 80 mm
compr. ratio 9.4:1
Made by GPM
Middle gudgeon pin to lowest point of piston: 29 mm
Middle gudgeon pin to highest point of piston: 41,5 mm
Gudgeon pin diam. 19 mm
Useable on JAP. JOS engine or JTOR. Jap engine clearance 0,13mm
can be used f. Norton at +40
Piston Clearance 0.12mm or 45thou
weight without rings 371 g
weight with rings 400 g
BSA DBD Gold Star Piuston Pre Unit 500cc Piston +020. BSA Unit Gold Star 500
85.5 mm
9.5:1
Piston Clearance 0.12mm or 45thou
with Piston Rings, Gudgeon Pin and Circlips
BSA 500cc. 557 cc. 595 cc Piston +030 1934-36 85,75 mm
Compr. 1 3/8" Length 3 7/16"
Gudgeon Pin 3/4"
1934 499 cc OH Special Low Comp. Blue Star W34-9
1932/3 557 cc SV H32-9, M33-10, CR 4.9:1
1932/6 499 cc SV W32-6, W33-6, W34-7, W35-6, W36-6 CR 4.4:1
1932/5 499 OHV W32-7, W33-7, W34-8, W35-7, Two Port CR 5.8:1
1934/6 595 cc SV M34-12, M35-10, M36-10 CR 4.8:1
1934/5 595 cc OHV M34-13, M35-11, Two Port CR 5.5:1
Please look at all pictures
including gudgeon Pin, piston rings and circlips
Piston Clearance 0.12mm or 45thou
Please look at all pictures
BSA 500 cc 557 cc. 595 cc Piston +020. 85.5 mm 1934-36
Compr. 1 3/8" Length 3 7/16"
Gudgeon Pin 3/4"
1934 499 cc OH Special Low Comp. Blue Star W34-9
1932/3 557 cc SV H32-9, M33-10, CR 4.9:1
1932/6 499 cc SV W32-6, W33-6, W34-7, W35-6, W36-6 CR 4.4:1
1932/5 499 OHV W32-7, W33-7, W34-8, W35-7, Two Port CR 5.8:1
1934/6 595 cc SV M34-12, M35-10, M36-10 CR 4.8:1
1934/5 595 cc OHV M34-13, M35-11, Two Port CR 5.5:1
Please look at all pictures
including gudgeon Pin, piston rings and circlips
Piston Clearance 0.12mm or 45thou
Please look at all pictures
BSA 500cc. 557 cc. 595 cc Piston +080. 87 mm 1934-36
Compr. 1 3/8" Length 3 7/16"
Gudgeon Pin 3/4"
1934 499 cc OH Special Low Comp. Blue Star W34-9
1932/3 557 cc SV H32-9, M33-10, CR 4.9:1
1932/6 499 cc SV W32-6, W33-6, W34-7, W35-6, W36-6 CR 4.4:1
1932/5 499 OHV W32-7, W33-7, W34-8, W35-7, Two Port CR 5.8:1
1934/6 595 cc SV M34-12, M35-10, M36-10 CR 4.8:1
1934/5 595 cc OHV M34-13, M35-11, Two Port CR 5.5:1
Sloper
Please look at all pictures
including gudgeon Pin, piston rings and circlips
Piston Clearance 0.12mm or 45thou
Please look at all pictures
BSA 500cc. 557 cc. 595 cc Piston +060. 86.5 mm 1934-36
Compr. 1 3/8" Length 3 7/16"
Gudgeon Pin 3/4"
1934 499 cc OH Special Low Comp. Blue Star W34-9
1932/3 557 cc SV H32-9, M33-10, CR 4.9:1
1932/6 499 cc SV W32-6, W33-6, W34-7, W35-6, W36-6 CR 4.4:1
1932/5 499 OHV W32-7, W33-7, W34-8, W35-7, Two Port CR 5.8:1
1934/6 595 cc SV M34-12, M35-10, M36-10 CR 4.8:1
1934/5 595 cc OHV M34-13, M35-11, Two Port CR 5.5:1
Sloper
Please look at all pictures
including gudgeon Pin, piston rings and circlips
Piston Clearance 0.12mm or 45thou
Please look at all pictures
PLEASE NOTE! This pistons are only sold with one oil ring at the moment. The included compression rings don't fit and no fitting ones are available at the moment.
BSA Piston Assembly +020 A7 with Piston Rings, Circlips and Gudgeon Pin
Price per Pair
+20 = 66.5 mm
Compression Ratio 6.5:1
Piston Clearence 0.12mm or 45thou
BSA A65 Piston Pair Assy 9:1 STDPiston Pair with Circlips, Piston Rings and Gudgeon PinGudgeon Pin Diameter 19 mm - 3/4" Compr. hight 37 mmPiston Clearance 0.12mm or 45thouPrice per PairPlease look at all pictures
BSA Bantam D3 Piston +020
with Piston Rings, Circlips and Gudgeon Pin
Piston Clearance 0.12mm or 45thou
STD = 57mm +0,5mm
Gudgeon Pin: 48mm x 12mm
Please see at all pictures