Seasons Greetings and a Happy New year to all. We are not offering any Seasons specials INSTEAD we will perform our usual gift offer: All profits from December sales again will be donated to Charity.
Local post office is closed 25-26 Dec and 1 Jan 2026

Gearbox mainshaft gear, BSA M20 M B series 24-4231

Gearbox mainshaft gear, 20T x 16T, BSA, M, B SERIES, genuine NOS,to suit BSA M20, M21, B31, B32, B33, B34 etc
Original part number
24-4231 -  20/16 Tooth. To suit BSA M20, M21, B31, B32, B33, B34 etc

  • Stock Code: EM677
  • Shipping Weight: 450 grams
  • 1 Units in Stock
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$77.00 $69.30Save: 10% off

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Seasons Greetings and a Happy New year to all. We are not offering any Seasons specials INSTEAD we will perform our usual gift offer: All profits from December sales again will be donated to Charity.
Local post office is closed 25-26 Dec and 1 Jan 2026