Classic Bike Parts, Pistons & Gifts

We sell a wide range of Classic Motorcycle pistons, catering for almost every model of classic bike. We also produce a wide range of classic motorcycle posters, artwork and limited edition prints. Products recently added to our catalogue include, metal signs, mugs and gasket sets. Due to recent changes in US shipping costs, unfortunately, we are currently unable to post to this country. If customers enter a US address but select a different country to attempt to purchase, the payment will have to be refunded, less a refund charge which includes the charges made to us from Credit Card/Paypal.

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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 - 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
£115.85
£113.03
InfoBuy

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
£115.85
£113.03
InfoBuy

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
£115.85
£113.03
InfoBuy

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
£115.85
£113.03
InfoBuy

BSA Piston - 348cc OHV (Single Port, B24, B25, Empire Star Competition), Year: 1939, + .040

BSA Piston - 348cc OHV (Single Port, B24, B25, Empire Star Competition), Year: 1939, + .040
£214.28
£209.05
InfoBuy

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
£120.54
£117.61
InfoBuy

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
£120.54
£117.61
InfoBuy

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
£120.54
£117.61
InfoBuy

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
£120.54
£117.61
InfoBuy

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
£110.77
£108.06
InfoBuy

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
£148.49
£144.88
InfoBuy

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
£148.49
£144.88
InfoBuy

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
£148.49
£144.88
InfoBuy

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
£148.49
£144.88
InfoBuy

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
£112.93
£110.19
InfoBuy

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
£112.93
£110.19
InfoBuy

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
£112.93
£110.19
InfoBuy

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
£112.93
£110.19
InfoBuy

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
£112.93
£110.19
InfoBuy

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
£112.93
£110.19
InfoBuy

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
£112.93
£110.19
InfoBuy

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
£154.34
£150.59
InfoBuy

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
£154.34
£150.59
InfoBuy

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
£154.34
£150.59
InfoBuy

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
£154.34
£150.59
InfoBuy

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
£154.34
£150.59
InfoBuy

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
£154.34
£150.59
InfoBuy

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
£111.96
£109.25
InfoBuy

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

BSA Piston - 499cc OHV (B33, B34, B34 Gold Star, M33), Year: 1947-52, +.020
£296.71
£289.50
InfoBuy

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
£111.96
£109.25
InfoBuy

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

BSA Piston - 499cc OHV (B33, B34, B34 Gold Star, M33), Year: 1947-52, +.040
£296.71
£289.50
InfoBuy

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
£111.96
£109.25
InfoBuy

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

BSA Piston - 499cc OHV (B33, B34, B34 Gold Star, M33), Year: 1947-52, STD
£296.71
£289.50
InfoBuy

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
£148.31
£144.70
InfoBuy

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
£148.31
£144.70
InfoBuy

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
£148.31
£144.70
InfoBuy

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
£154.91
£151.15
InfoBuy

BSA Piston - 499cc OHV (B34, Gold Star), Year: 1954-62, +.030

BSA - 499cc OHV (B34, Gold Star) Year: 1954-62, compression ratio 9:1 (bore 85mm +.030"") compression...

BSA Piston - 499cc OHV (B34, Gold Star), Year: 1954-62, +.030
£154.91
£151.15
InfoBuy

BSA Piston - 499cc OHV (B34, Gold Star), Year: 1954-62, +.040

BSA - 499cc OHV (B34, Gold Star) Year: 1954-62, compression ratio 9:1 (bore 85mm +.040"") compression...

BSA Piston - 499cc OHV (B34, Gold Star), Year: 1954-62, +.040
£154.91
£151.15
InfoBuy

BSA Piston - 499cc OHV (B34, Gold Star), Year: 1954-62, +.060

BSA - 499cc OHV (B34, Gold Star) Year: 1954-62, compression ratio 9:1 (bore 85mm +.060"") compression...

BSA Piston - 499cc OHV (B34, Gold Star), Year: 1954-62, +.060
£154.91
£151.15
InfoBuy

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

BSA - 499cc OHV (B34, Gold Star) Year: 1954-62, compression ratio 9:1 (bore 85mm) compression height 1.703"",...

BSA Piston - 499cc OHV (B34, Gold Star), Year: 1954-62, STD
£154.91
£151.15
InfoBuy

BSA Piston - 500cc (A7, Star Twin), Year: 1949-50, +.020

BSA - 500cc (A7, Star Twin), Year: 1949-50, compression ratio 7.5:1. (bore 2.4405"" +.020"") compression...

BSA Piston - 500cc (A7, Star Twin), Year: 1949-50, +.020
£126.04
£122.96
InfoBuy

BSA Piston - 500cc (A7, Star Twin), Year: 1949-50, +.060

BSA - 500cc (A7, Star Twin), Year: 1949-50, compression ratio 7.5:1. (bore 2.4405"" +.060"") compression...

BSA Piston - 500cc (A7, Star Twin), Year: 1949-50, +.060
£126.04
£122.96
InfoBuy

BSA Piston - 500cc OHV (A7), Year: 1951-58, +.020

BSA - 500cc OHV (A7) Year: 1951-58, compression ratio 6.6:1,(bore 66mm +.020"") compression height 1.565"",...

BSA Piston - 500cc OHV (A7), Year: 1951-58, +.020
£165.9
£161.86
InfoBuy

BSA Piston - 500cc OHV (A7), Year: 1951-58, +.030

BSA - 500cc OHV (A7) Year: 1951-58, compression ratio 6.6:1,(bore 66mm +.030"") compression height 1.565"",...

BSA Piston - 500cc OHV (A7), Year: 1951-58, +.030
£165.9
£161.86
InfoBuy

BSA Piston - 500cc OHV (A7), Year: 1951-58, +.040

BSA - 500cc OHV (A7) Year: 1951-58, compression ratio 6.6:1,(bore 66mm +.040"") compression height 1.565"",...

BSA Piston - 500cc OHV (A7), Year: 1951-58, +.040
£165.9
£161.86
InfoBuy

BSA Piston - 500cc OHV (A7), Year: 1951-58, +.060

BSA - 500cc OHV (A7) Year: 1951-58, compression ratio 6.6:1,(bore 66mm +.060"") compression height 1.565"",...

BSA Piston - 500cc OHV (A7), Year: 1951-58, +.060
£165.9
£161.86
InfoBuy

BSA Piston - 500cc OHV (A7), Year: 1951-58, STD

BSA - 500cc OHV (A7) Year: 1951-58, compression ratio 6.6:1,(bore 66mm) compression height 1.565"", piston...

BSA Piston - 500cc OHV (A7), Year: 1951-58, STD
£165.9
£161.86
InfoBuy

BSA Piston - 500cc OHV (A7), Year: 1951-60, + 1.6 MM

BSA - 500cc OHV (A7) Year: 1951-60 high compression 8:1, 500cc OHV (A7) Year: 1961-62 high compression...

BSA Piston - 500cc OHV (A7), Year: 1951-60, + 1.6 MM
£167.32
£163.23
InfoBuy

BSA Piston - 500cc OHV (A7), Year: 1951-60, +.020

BSA - 500cc OHV (A7) Year: 1951-60, high compression ratio 7.25:1, (bore 66mm +.020"") compression height...

BSA Piston - 500cc OHV (A7), Year: 1951-60, +.020
£171.84
£167.66
InfoBuy

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