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Home > Products > Classic Motorcycle Pistons > BSA Pistons

BSA Pistons

BSA Pistons are supplied complete with rings & pins.


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BSA Piston - 343cc OHV (B40, SS90), Year: 1963-65, +.020

BSA - 343cc OHV (B40, SS90) Year 1963-65, compression ratio 8.75:1 (bore 79mm +.020"") compression height...

BSA Piston - 343cc OHV (B40, SS90), Year: 1963-65, +.020
£184.31
£179.82

BSA Piston - 343cc OHV (B40, SS90), Year: 1963-65, +.030

BSA - 343cc OHV (B40, SS90) Year 1963-65, compression ratio 8.75:1 (bore 79mm +.030"") compression height...

BSA Piston - 343cc OHV (B40, SS90), Year: 1963-65, +.030
£184.31
£179.82

BSA Piston - 343cc OHV (B40, SS90), Year: 1963-65, +.040

BSA - 343cc OHV (B40, SS90) Year 1963-65, compression ratio 8.75:1 (bore 79mm +.040"") compression height...

BSA Piston - 343cc OHV (B40, SS90), Year: 1963-65, +.040
£184.31
£179.82

BSA Piston - 343cc OHV (B40, SS90), Year: 1963-65, STD

BSA - 343cc OHV (B40, SS90) Year 1963-65, compression ratio 8.75:1 (bore 79mm) compression height 1.801"",...

BSA Piston - 343cc OHV (B40, SS90), Year: 1963-65, STD
£184.31
£179.82

BSA Piston - 348cc OHV (De Luxe Single Port, R35-4, R36-17), Year: 1935-36, +.020

BSA - 348cc OHV (De Luxe Single Port, R35-4, R36-17) Year: 1935-36, (B23) Year: 1939, (B26, C23) Year:...

BSA Piston - 348cc OHV (De Luxe Single Port, R35-4, R36-17), Year: 1935-36, +.020
£112.46
£109.73

BSA Piston - 348cc OHV (De Luxe Single Port, R35-4, R36-17), Year: 1935-36, +.030

BSA - 348cc OHV (De Luxe Single Port, R35-4, R36-17) Year: 1935-36, (B23) Year: 1939, (B26, C23) Year:...

BSA Piston - 348cc OHV (De Luxe Single Port, R35-4, R36-17), Year: 1935-36, +.030
£112.46
£109.73

BSA Piston - 348cc OHV (De Luxe Single Port, R35-4, R36-17), Year: 1935-36, +.040

BSA - 348cc OHV (De Luxe Single Port, R35-4, R36-17) Year: 1935-36, (B23) Year: 1939, (B26, C23) Year:...

BSA Piston - 348cc OHV (De Luxe Single Port, R35-4, R36-17), Year: 1935-36, +.040
£112.46
£109.73

BSA Piston - 348cc OHV (De Luxe Single Port, R35-4, R36-17), Year: 1935-36, +.060

BSA - 348cc OHV (De Luxe Single Port, R35-4, R36-17) Year: 1935-36, (B23) Year: 1939, (B26, C23) Year:...

BSA Piston - 348cc OHV (De Luxe Single Port, R35-4, R36-17), Year: 1935-36, +.060
£112.46
£109.73

BSA Piston - 348cc OHV (De Luxe Single Port, R35-4, R36-17), Year: 1935-36, +.080

BSA - 348cc OHV (De Luxe Single Port, R35-4, R36-17) Year: 1935-36, (B23) Year: 1939, (B26, C23) Year:...

BSA Piston - 348cc OHV (De Luxe Single Port, R35-4, R36-17), Year: 1935-36, +.080
£112.46
£109.73

BSA Piston - 348cc OHV (De Luxe Single Port, R35-4, R36-17), Year: 1935-36, +.8 MM

BSA - 348cc OHV (De Luxe Single Port, R35-4, R36-17) Year: 1935-36, (B23) Year: 1939, (B26, C23) Year:...

BSA Piston - 348cc OHV (De Luxe Single Port, R35-4, R36-17), Year: 1935-36, +.8 MM
£112.46
£109.73

BSA Piston - 348cc OHV (De Luxe Single Port, R35-4, R36-17), Year: 1935-36, +1.6 MM

BSA - 348cc OHV (De Luxe Single Port, R35-4, R36-17) Year: 1935-36, (B23) Year: 1939, (B26, C23) Year:...

BSA Piston - 348cc OHV (De Luxe Single Port, R35-4, R36-17), Year: 1935-36, +1.6 MM
£112.46
£109.73

BSA Piston - 348cc OHV (De Luxe Single Port, R35-4, R36-17), Year: 1935-36, STD

BSA - 348cc OHV (De Luxe Single Port, R35-4, R36-17) Year: 1935-36, (B23) Year: 1939, (B26, C23) Year:...

BSA Piston - 348cc OHV (De Luxe Single Port, R35-4, R36-17), Year: 1935-36, STD
£112.46
£109.73

BSA Piston - 350cc OHV (Deluxe, M19), Year: 1937-38, +.020

BSA - 350cc OHV (Deluxe, M19) Year: 1937-38, (bore 68.8mm +.020"") compression height 1.3/16, piston length...

BSA Piston - 350cc OHV (Deluxe, M19), Year: 1937-38, +.020
£117.01
£114.17

BSA Piston - 350cc OHV (Deluxe, M19), Year: 1937-38, +.040

BSA - 350cc OHV (Deluxe, M19) Year: 1937-38, (bore 68.8mm +.040"") compression height 1.3/16, piston length...

BSA Piston - 350cc OHV (Deluxe, M19), Year: 1937-38, +.040
£117.01
£114.17

BSA Piston - 350cc OHV (Deluxe, M19), Year: 1937-38, +.060

BSA - 350cc OHV (Deluxe, M19) Year: 1937-38, (bore 68.8mm +.060"") compression height 1.3/16, piston length...

BSA Piston - 350cc OHV (Deluxe, M19), Year: 1937-38, +.060
£117.01
£114.17

BSA Piston - 350cc OHV (Deluxe, M19), Year: 1937-38, STD

BSA - 350cc OHV (Deluxe, M19) Year: 1937-38, (bore 68.8mm) compression height 1.3/16, piston length 2.45/64...

BSA Piston - 350cc OHV (Deluxe, M19), Year: 1937-38, STD
£117.01
£114.17

BSA Piston - 350cc OHV (Sports, B26), Year: 1937-38, +.030

BSA - 350cc OHV (Sports, B26) Year: 1937-38 (bore 71mm +.030"") compression height 1.5/32, piston length...

BSA Piston - 350cc OHV (Sports, B26), Year: 1937-38, +.030
£107.53
£104.91

BSA Piston - 441cc OHV (B44, Shooting Star), Year: 1967-69, +.020

BSA - 441cc OHV (B44, Shooting Star) Year: 1967-69 compression ratio 9.4:1.(bore 78.984mm +.020"") compression...

BSA Piston - 441cc OHV (B44, Shooting Star), Year: 1967-69, +.020
£144.14
£140.64

BSA Piston - 441cc OHV (B44, Shooting Star), Year: 1967-69, +.040

BSA - 441cc OHV (B44, Shooting Star) Year: 1967-69 compression ratio 9.4:1.(bore 78.984mm +.040"") compression...

BSA Piston - 441cc OHV (B44, Shooting Star), Year: 1967-69, +.040
£144.14
£140.64

BSA Piston - 441cc OHV (B44, Shooting Star), Year: 1967-69, +.060

BSA - 441cc OHV (B44, Shooting Star) Year: 1967-69 compression ratio 9.4:1.(bore 78.984mm +.060"") compression...

BSA Piston - 441cc OHV (B44, Shooting Star), Year: 1967-69, +.060
£144.14
£140.64

BSA Piston - 441cc OHV (B44, Shooting Star), Year: 1967-69, STD

BSA - 441cc OHV (B44, Shooting Star) Year: 1967-69 compression ratio 9.4:1.(bore 78.984mm) compression...

BSA Piston - 441cc OHV (B44, Shooting Star), Year: 1967-69, STD
£144.14
£140.64

BSA Piston - 496cc side valve (WD, M20), Year: 1937-55, +.020

BSA - 496cc side valve (WD, M20) Year: 1937-55 compression ratio 4.9:1. (bore 82mm +.020"") compression...

BSA Piston - 496cc side valve (WD, M20), Year: 1937-55, +.020
£109.63
£106.97

BSA Piston - 496cc side valve (WD, M20), Year: 1937-55, +.040

BSA - 496cc side valve (WD, M20) Year: 1937-55 compression ratio 4.9:1. (bore 82mm +.040"") compression...

BSA Piston - 496cc side valve (WD, M20), Year: 1937-55, +.040
£109.63
£106.97

BSA Piston - 496cc side valve (WD, M20), Year: 1937-55, +.060

BSA - 496cc side valve (WD, M20) Year: 1937-55 compression ratio 4.9:1. (bore 82mm +.060"") compression...

BSA Piston - 496cc side valve (WD, M20), Year: 1937-55, +.060
£109.63
£106.97

BSA Piston - 496cc side valve (WD, M20), Year: 1937-55, +.5 MM

BSA - 496cc side valve (WD, M20) Year: 1937-55 compression ratio 4.9:1. (bore 82mm +.5mm) compression...

BSA Piston - 496cc side valve (WD, M20), Year: 1937-55, +.5 MM
£109.63
£106.97

BSA Piston - 496cc side valve (WD, M20), Year: 1937-55, +.75 MM

BSA - 496cc side valve (WD, M20) Year: 1937-55 compression ratio 4.9:1. (bore 82mm +.75mm) compression...

BSA Piston - 496cc side valve (WD, M20), Year: 1937-55, +.75 MM
£109.63
£106.97

BSA Piston - 496cc side valve (WD, M20), Year: 1937-55, +1 MM

BSA - 496cc side valve (WD, M20) Year: 1937-55 compression ratio 4.9:1. (bore 82mm +1mm) compression height...

BSA Piston - 496cc side valve (WD, M20), Year: 1937-55, +1 MM
£109.63
£106.97

BSA Piston - 496cc side valve (WD, M20), Year: 1937-55, STD

BSA - 496cc side valve (WD, M20) Year: 1937-55 compression ratio 4.9:1. (bore 82mm) compression height...

BSA Piston - 496cc side valve (WD, M20), Year: 1937-55, STD
£109.63
£106.97

BSA Piston - 499cc OHV (A50, 500 Star), Year: 1962, +.020

BSA - 499cc OHV (A50, 500 Star) Year 1962, compression ratio 7.5:1 (bore 65.5mm +.020"") compression height...

BSA Piston - 499cc OHV (A50, 500 Star), Year: 1962, +.020
£149.83
£146.18

BSA Piston - 499cc OHV (A50, 500 Star), Year: 1962, +.040

BSA - 499cc OHV (A50, 500 Star) Year 1962, compression ratio 7.5:1 (bore 65.5mm +.040"") compression height...

BSA Piston - 499cc OHV (A50, 500 Star), Year: 1962, +.040
£149.83
£146.18

BSA Piston - 499cc OHV (A50, 500 Star), Year: 1962, +.060

BSA - 499cc OHV (A50, 500 Star) Year 1962, compression ratio 7.5:1 (bore 65.5mm +.060"") compression height...

BSA Piston - 499cc OHV (A50, 500 Star), Year: 1962, +.060
£149.83
£146.18

BSA Piston - 499cc OHV (A50, 500 Star), Year: 1962, +.75 MM

BSA - 499cc OHV (A50, 500 Star) Year 1962, compression ratio 7.5:1 (bore 65.5mm +.75MM) compression height...

BSA Piston - 499cc OHV (A50, 500 Star), Year: 1962, +.75 MM
£149.83
£146.18

BSA Piston - 499cc OHV (A50, 500 Star), Year: 1962, +1.5 MM

BSA - 499cc OHV (A50, 500 Star) Year 1962, compression ratio 7.5:1 (bore 65.5mm +1.5MM) compression height...

BSA Piston - 499cc OHV (A50, 500 Star), Year: 1962, +1.5 MM
£149.83
£146.18

BSA Piston - 499cc OHV (A50, 500 Star), Year: 1962, STD

BSA - 499cc OHV (A50, 500 Star) Year 1962, compression ratio 7.5:1 (bore 65.5mm) compression height 1.474"",...

BSA Piston - 499cc OHV (A50, 500 Star), Year: 1962, STD
£149.83
£146.18

BSA Piston - 499cc OHV (B33, B34, B34 Gold Star, M33), Year: 1947-52, +.020

BSA - 499cc OHV (B33, B34, B34 Gold Star, M33) Year: 1947-52, compression ratio 6.8:1, long con rod, (bore...

BSA Piston - 499cc OHV (B33, B34, B34 Gold Star, M33), Year: 1947-52, +.020
£108.69
£106.05

BSA Piston - 499cc OHV (B33, B34, B34 Gold Star, M33), Year: 1947-52, +.040

BSA - 499cc OHV (B33, B34, B34 Gold Star, M33) Year: 1947-52, compression ratio 6.8:1, long con rod, (bore...

BSA Piston - 499cc OHV (B33, B34, B34 Gold Star, M33), Year: 1947-52, +.040
£108.69
£106.05

BSA Piston - 499cc OHV (B33, B34, B34 Gold Star, M33), Year: 1947-52, +.060

BSA - 499cc OHV (B33, B34, B34 Gold Star, M33) Year: 1947-52, compression ratio 6.8:1, long con rod, (bore...

BSA Piston - 499cc OHV (B33, B34, B34 Gold Star, M33), Year: 1947-52, +.060
£108.69
£106.05

BSA Piston - 499cc OHV (B33, B34, B34 Gold Star, M33), Year: 1947-52, STD

BSA - 499cc OHV (B33, B34, B34 Gold Star, M33) Year: 1947-52, compression ratio 6.8:1, long con rod, (85mm...

BSA Piston - 499cc OHV (B33, B34, B34 Gold Star, M33), Year: 1947-52, STD
£108.69
£106.05

BSA Piston - 499cc OHV (B34, B33, M33), Year: 1952-60, +.040

BSA - 499cc OHV (B34, B33, M33) Year late 1952-60, compression ratio 7.5:1/6.5:1 when compression plate...

BSA Piston - 499cc OHV (B34, B33, M33), Year: 1952-60, +.040
£143.98
£140.47

BSA Piston - 499cc OHV (B34, B33, M33), Year: 1952-60, +.060

BSA - 499cc OHV (B34, B33, M33) Year late 1952-60, compression ratio 7.5:1/6.5:1 when compression plate...

BSA Piston - 499cc OHV (B34, B33, M33), Year: 1952-60, +.060
£143.98
£140.47

BSA Piston - 499cc OHV (B34, B33, M33), Year: 1952-60, STD

BSA - 499cc OHV (B34, B33, M33) Year late 1952-60, compression ratio 7.5:1/6.5:1 when compression plate...

BSA Piston - 499cc OHV (B34, B33, M33), Year: 1952-60, STD
£143.98
£140.47

BSA Piston - 499cc OHV (B34, Gold Star), Year: 1954-62, +.020

BSA - 499cc OHV (B34, Gold Star) Year: 1954-62, compression ratio 9:1 (bore 85mm +.020"") compression...

BSA Piston - 499cc OHV (B34, Gold Star), Year: 1954-62, +.020
£150.38
£146.73

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