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Bsa gearbox b31

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Bsa a10 b31 - bsa, b31/33

Bsa a10 b31 - bsa, b31/33

£104.70
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Bsa a10 b31 b33 series - bsa, a7

Bsa a10 b31 b33 series - bsa, a7

£8.25
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Bsa a10 b31 b33 b34 - a7,

Bsa a10 b31 b33 b34 - a7,

£3.90
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Bsa b31 b33 b34 - bsa,

Bsa b31 b33 b34 - bsa,

£175.00
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Bsa gearbox casing 3005 a7 - casing, 42-3005

Bsa gearbox casing 3005 a7 - casing, 42-3005

£19.52
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Bsa b31 b33 pair - bsa, armoured

Bsa b31 b33 pair - bsa, armoured

£49.99
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Bsa a10 gearbox b31 b33 - a7,

Bsa a10 gearbox b31 b33 - a7,

£83.90
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Bsa gearbox gasket set - set, a10

Bsa gearbox gasket set - set, a10

£8.00
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Bsa a10 b31 b33 - a7, b34

Bsa a10 b31 b33 - a7, b34

£5.70
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Bsa a10 b31 b33 - a7,

Bsa a10 b31 b33 - a7,

£47.50
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Bsa a10 b31 plunger - a10,

Bsa a10 b31 plunger - a10,

£2.95
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Bsa gearbox casing - gearbox, a7

Bsa gearbox casing - gearbox, a7

£17.38
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4065 bsa nke - 24-4065, (nke

4065 bsa nke - 24-4065, (nke

£14.90
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Bsa 3005 a10 - bsa, b33

Bsa 3005 a10 - bsa, b33

£28.34
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Bsa 4206 gearbox gear - 15-4206,

Bsa 4206 gearbox gear - 15-4206,

£69.95
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Skf bsa 4065 - bsa, gearbox

Skf bsa 4065 - bsa, gearbox

£24.99
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Bsa a10 b31 b33 - a10,

Bsa a10 b31 b33 - a10,

£125.00
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3131 bsa b31 b33 m20 - 66-3131,

3131 bsa b31 b33 m20 - 66-3131,

£3.40
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Gearbox gasket set bsa 10 - gasket, a7/10

Gearbox gasket set bsa 10 - gasket, a7/10

£8.61
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Bsa a10 b31 - bsa, a7/a10/b31/b33/

Bsa a10 b31 - bsa, a7/a10/b31/b33/

£27.88
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Bsa b31 gearbox gear - bsa,

Bsa b31 gearbox gear - bsa,

£63.10
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Bsa a10 b31 b33 gearbox - bsa, a7

Bsa a10 b31 b33 gearbox - bsa, a7

£19.36
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Bsa a10 b31 b33 std - b33,

Bsa a10 b31 b33 std - b33,

£95.00
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Bsa b31 b33 swinging arm - bsa,

Bsa b31 b33 swinging arm - bsa,

£78.70
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Bsa a10 b31 - a7, b33

Bsa a10 b31 - a7, b33

£8.50
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Bsa a10 b31 - a7,

Bsa a10 b31 - a7,

£3.90
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Bsa a10 b31 - a7, b33

Bsa a10 b31 - a7, b33

£6.15
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Bsa b31 b33 a10 std - bsa, d7/a10

Bsa b31 b33 a10 std - bsa, d7/a10

£167.10
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Bsa gearbox sprocket oil - gearbox,

Bsa gearbox sprocket oil - gearbox,

£6.75
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Bsa a10 b31 b33 gearbox - a7,

Bsa a10 b31 b33 gearbox - a7,

£16.50
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Dunlop bsa 4065 - bsa, gearbox

Dunlop bsa 4065 - bsa, gearbox

£16.99
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Bsa b31 b33 - b31, plunger

Bsa b31 b33 - b31, plunger

£12.09
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4217 bsa b31 - bsa, b32

4217 bsa b31 - bsa, b32

£11.07
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Bsa a10 b31 - a10, c1

Bsa a10 b31 - a10, c1

£67.50
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Bsa b31 b33 b34 - c15,

Bsa b31 b33 b34 - c15,

£3.65
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Gearbox outer cover - gearbox,

Gearbox outer cover - gearbox,

£6.47
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Bsa a10 b31 b32 b33 - b31,

Bsa a10 b31 b32 b33 - b31,

£10.80
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Bsa m20 m22 - m21, b31

Bsa m20 m22 - m21, b31

£43.60
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Gearbox sprocket 18t - for, bsa

Gearbox sprocket 18t - for, bsa

£34.80
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4065 bsa a10 b31 - bsa, a7

4065 bsa a10 b31 - bsa, a7

£17.95
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Gearbox clutch arm cover - ,

Gearbox clutch arm cover - ,

£5.40
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Bsa b31 b32 - b31, star

Bsa b31 b32 - b31, star

£53.95
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Bsa gearbox inspection - gearbox, cover

Bsa gearbox inspection - gearbox, cover

£15.00
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Bsa a10 b31 b33 gearbox - bsa, a10/a7/b31/b33

Bsa a10 b31 b33 gearbox - bsa, a10/a7/b31/b33

£62.06
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Bsa goldstar b31 lower - bsa,

Bsa goldstar b31 lower - bsa,

£10.80
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Gearbox inspection cover - x,

Gearbox inspection cover - x,

£4.33
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Selection bsa b31 - selection,

Selection bsa b31 - selection,

£1.89
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Bsa a10 b31 b33 swinging - bsa, a7-a10-b31-b33

Bsa a10 b31 b33 swinging - bsa, a7-a10-b31-b33

£160.00
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Oil seal gearbox bsa - oil, gearbox,

Oil seal gearbox bsa - oil, gearbox,

£10.58
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Bsa a10 b31 b33 - b31, b34

Bsa a10 b31 b33 - b31, b34

£3.90
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Bsa a10 b31 gearbox - a10,

Bsa a10 b31 gearbox - a10,

£3.98
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Bsa b31 b33 m20 m21 - m21, gearbox

Bsa b31 b33 m20 m21 - m21, gearbox

£39.99
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344 gearbox gasket set - 344, bsa

344 gearbox gasket set - 344, bsa

£12.00
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Bsa a10 b31 - a10,

Bsa a10 b31 - a10,

£39.98
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3508 bsa a10 plunger - bsa, m20

3508 bsa a10 plunger - bsa, m20

£9.75
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Gearbox clutch arm cover - ,

Gearbox clutch arm cover - ,

£4.33
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Bsa a10 gearbox - bsa, 2nd

Bsa a10 gearbox - bsa, 2nd

£16.15
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Bsa a10 b31 b33 b34 - bsa,

Bsa a10 b31 b33 b34 - bsa,

£3.45
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Bearing gearbox high - gearbox,,

Bearing gearbox high - gearbox,,

£6.62
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Bsa a10 b34 b33 b32 - b33,

Bsa a10 b34 b33 b32 - b33,

£11.00
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3032p gearbox outer - gearbox, cover

3032p gearbox outer - gearbox, cover

£3.25
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Bsa a10 b31 - a7, b33

Bsa a10 b31 - a7, b33

£8.45
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Bsa a10 b31 b33 - bsa, gold

Bsa a10 b31 b33 - bsa, gold

£19.36
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Bsa a10 b31 b33 swinging - a10,

Bsa a10 b31 b33 swinging - a10,

£5.98
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Bsa a10 500cc 650cc - a10,

Bsa a10 500cc 650cc - a10,

£170.00
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Bsa gear 20t - bsa,

Bsa gear 20t - bsa,

£26.70
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Bsa m20 m21 - m21, b31

Bsa m20 m21 - m21, b31

£39.99
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Bsa a10 b31 gearbox - a10,

Bsa a10 b31 gearbox - a10,

£39.99
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Gearbox sprocket bsa - gearbox,

Gearbox sprocket bsa - gearbox,

£46.57
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Bsa m21 b31 b33 - bsa,

Bsa m21 b31 b33 - bsa,

£34.88
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Bsa b31 b32 b34 - bsa, armoured

Bsa b31 b32 b34 - bsa, armoured

£52.95
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3031 gearbox inner cover - gearbox,

3031 gearbox inner cover - gearbox,

£3.00
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Gearbox inner outer - gearbox, inner+

Gearbox inner outer - gearbox, inner+

£6.47
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Bsa m20 m21 b31 - m20,

Bsa m20 m21 b31 - m20,

£39.99
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Bsa b31 b33 m20 m21 - b31-b33-m20-m21-m33, inner

Bsa b31 b33 m20 m21 - b31-b33-m20-m21-m33, inner

£30.00
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Bsa a10 b31 - gold, gearbox

Bsa a10 b31 - gold, gearbox

£18.95
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Bsa b31 b33 m21 m20 - bsa,

Bsa b31 b33 m21 m20 - bsa,

£16.15
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Bsa gear 23t gearbox layshaft - bsa,

Bsa gear 23t gearbox layshaft - bsa,

£21.50
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Bsa a10 b31 b33 - bsa,

Bsa a10 b31 b33 - bsa,

£9.49
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Vintage bsa kickstart - g5,

Vintage bsa kickstart - g5,

£16.15
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Bsa b31 b33 - bsa, m33

Bsa b31 b33 - bsa, m33

£6.15
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Bsa a10 b31 gearbox - bsa,

Bsa a10 b31 gearbox - bsa,

£17.99
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Bsa m20 m21 - m21,, b31/33

Bsa m20 m21 - m21,, b31/33

£5.44
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Bsa m20 m21 - m20, m24

Bsa m20 m21 - m20, m24

£15.99
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4217 bsa nke - 24-4217, premium

4217 bsa nke - 24-4217, premium

£14.98
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Bsa m20 m21 m33 b31 - m21,

Bsa m20 m21 m33 b31 - m21,

£21.02
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Bsa a10 b31 b33 gearbox - b33,

Bsa a10 b31 b33 gearbox - b33,

£8.25
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Bsa m21 b31 b33 a10 - , a7

Bsa m21 b31 b33 a10 - , a7

£14.99
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Bsa a10 b31 b33 outer - bsa,

Bsa a10 b31 b33 outer - bsa,

£31.99
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3069 gearbox inner cover - 66-3069,

3069 gearbox inner cover - 66-3069,

£3.45
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Bsa a10 b31 b33 - bsa, b33,

Bsa a10 b31 b33 - bsa, b33,

£15.00
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Bsa gear 19t - bsa,

Bsa gear 19t - bsa,

£24.99
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Bsa b31 b33 - bsa, m20

Bsa b31 b33 - bsa, m20

£2.90
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4110 bsa b31 - bsa, m20

4110 bsa b31 - bsa, m20

£3.20
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Gearbox sprocket 18t for bsa - sprocket,

Gearbox sprocket 18t for bsa - sprocket,

£41.99
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Bsa gearbox transmission - bsa,

Bsa gearbox transmission - bsa,

£63.38
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📊96 listings · from £1.89 · avg £30.17

Browse 96 bsa gearbox b31 listings currently in our index. Prices range from £1.89 to £175, with an average of £30.17. Whether you are hunting for a bargain or looking for a top-spec model, the selection below covers all price points — new, used and refurbished. More about bsa gearbox b31 →

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Everything you need to know about bsa gearbox b31

Whether you are looking for a brand-new or second-hand bsa gearbox b31, eBay offers one of the largest selections available online. With 96 active listings at the time of this page's last update, you have plenty of choice across different conditions, sellers and price points. The cheapest option currently starts at £1.89, while premium listings can reach £175 — giving you a wide budget spread to work with. The average price of £30.17 can serve as a useful benchmark: listings below this tend to be used or auction-style, while those above often include extra accessories, warranties, or are sold by professional sellers with high feedback scores. Always check the seller's feedback rating and return policy before committing to a purchase. If you need the item quickly, filter by "Buy It Now" to avoid the uncertainty of auctions. For used items, look closely at the condition description and photos — terms like "good", "very good" and "like new" can mean very different things depending on the seller.

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