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Bsa gearbox b31

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Home / Transmission & Drivetrain / Bsa gearbox b31 refurbished & used for sale | For Sale UK
Bsa a10 b31 - b33, swing-arm

Bsa a10 b31 - b33, swing-arm

£109.90
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Bsa a10 b31 b33 series - b31,

Bsa a10 b31 b33 series - b31,

£8.25
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Bsa a10 b31 b33 swing - a10, swing-arm

Bsa a10 b31 b33 swing - a10, swing-arm

£125.50
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Bsa m20 m21 b31 b32 - m20,

Bsa m20 m21 b31 b32 - m20,

£85.00
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Bsa m20 m21 b31 - bsa,

Bsa m20 m21 b31 - bsa,

£100.00
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Bsa b31 b33 pair - bsa, armoured

Bsa b31 b33 pair - bsa, armoured

£49.99
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Bsa a10 b31 plunger and - a7,

Bsa a10 b31 plunger and - a7,

£2.95
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Bsa m20 m21 wm20 b31 - m21,

Bsa m20 m21 wm20 b31 - m21,

£338.20
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Gearbox gasket set - bsa, a7/10

Gearbox gasket set - bsa, a7/10

£8.61
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Bsa m20 m21 b31 - m21, b34

Bsa m20 m21 b31 - m21, b34

£65.00
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Bsa b31 b33 b34 dbd34 - b34,

Bsa b31 b33 b34 dbd34 - b34,

£175.00
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Bsa a10 b31 - a7, b34

Bsa a10 b31 - a7, b34

£5.70
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Bsa a10 b31 b33 b34 - b31,

Bsa a10 b31 b33 b34 - b31,

£3.90
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Bsa gearbox sprocket oil - gearbox, seal

Bsa gearbox sprocket oil - gearbox, seal

£6.75
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Bsa 4206 gearbox - gearbox, gear

Bsa 4206 gearbox - gearbox, gear

£69.95
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Bsa a10 500cc 650cc - 500cc,

Bsa a10 500cc 650cc - 500cc,

£329.99
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4217 bsa b31 b32 m20 - b31, m21

4217 bsa b31 b32 m20 - b31, m21

£10.79
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Bsa a10 b31 - a7, b34

Bsa a10 b31 - a7, b34

£3.90
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Bsa a10 b31 - bsa, gearbox

Bsa a10 b31 - bsa, gearbox

£62.06
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Bsa b31 b33 - bsa, m20

Bsa b31 b33 - bsa, m20

£49.99
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Bsa gearbox casing 3005 - ,

Bsa gearbox casing 3005 - ,

£17.38
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4065 bsa nke premium - bsa, (nke

4065 bsa nke premium - bsa, (nke

£14.90
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Bsa b31 b32 b33 b34 - b31,

Bsa b31 b32 b33 b34 - b31,

£4.95
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Bsa b31 b32 b34 - bsa, b31,b32,b34

Bsa b31 b32 b34 - bsa, b31,b32,b34

£52.95
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Nos bsa b31 - b31, a7

Nos bsa b31 - b31, a7

£9.68
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Bsa outer gearbox cover case - cover,

Bsa outer gearbox cover case - cover,

£8.49
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Bsa 350 500 650 - b31, a10

Bsa 350 500 650 - b31, a10

£12.99
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Bsa gearbox casing 3005 - bsa, a7

Bsa gearbox casing 3005 - bsa, a7

£19.52
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Bsa a10 b31 - 500, 650

Bsa a10 b31 - 500, 650

£199.99
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Bsa a10 b31 b33 500cc - bsa,

Bsa a10 b31 b33 500cc - bsa,

£119.99
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3131 bsa b31 - 66-3131, b33

3131 bsa b31 - 66-3131, b33

£3.40
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Bsa b31 gearbox sprocket - bsa,

Bsa b31 gearbox sprocket - bsa,

£17.22
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Bsa m20 m21 b31 b33 - m20,

Bsa m20 m21 b31 b33 - m20,

£49.99
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Bsa outer gearbox - outer, case

Bsa outer gearbox - outer, case

£7.95
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Bsa a10 b31 b33 swinging - a10,

Bsa a10 b31 b33 swinging - a10,

£6.15
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Gearbox outer cover - 2,

Gearbox outer cover - 2,

£6.47
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Bsa b31 gearbox - bsa, gear

Bsa b31 gearbox - bsa, gear

£63.10
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Bsa a10 b31 b33 std - a10,

Bsa a10 b31 b33 std - a10,

£95.00
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Bsa a10 b31 b33 - bsa,

Bsa a10 b31 b33 - bsa,

£16.50
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Gearbox inner outer cover - gearbox,

Gearbox inner outer cover - gearbox,

£6.47
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Bsa b31 b33 - b31/b33, std

Bsa b31 b33 - b31/b33, std

£167.10
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4217 bsa nke premium - (nke,

4217 bsa nke premium - (nke,

£14.98
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Bsa a10 b31 gearbox - bsa,

Bsa a10 b31 gearbox - bsa,

£3.98
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Bsa gearbox inspection cover - bsa,

Bsa gearbox inspection cover - bsa,

£10.26
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Bsa b31 b33 swinging - bsa, b31/b33

Bsa b31 b33 swinging - bsa, b31/b33

£78.70
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Gearbox clutch arm cover - x,

Gearbox clutch arm cover - x,

£5.40
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Bsa a10 500cc 650cc - a10,

Bsa a10 500cc 650cc - a10,

£170.00
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Bsa a10 b31 b33 - b33, gold

Bsa a10 b31 b33 - b33, gold

£19.36
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Bsa b31 b32 b33 b34 - bsa,

Bsa b31 b32 b33 b34 - bsa,

£8.50
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Selection bsa b31 - selection,

Selection bsa b31 - selection,

£1.89
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Bsa goldstar b31 lower - goldstar, /b31/33

Bsa goldstar b31 lower - goldstar, /b31/33

£10.80
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Bsa gearbox inspection cover - gearbox,

Bsa gearbox inspection cover - gearbox,

£15.00
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Gearbox inspection cover - gearbox,

Gearbox inspection cover - gearbox,

£4.33
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Bsa a10 b31 gold star - a10,

Bsa a10 b31 gold star - a10,

£18.95
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Bsa a10 b34 - b32, b31

Bsa a10 b34 - b32, b31

£11.00
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Bsa m20 m21 m22 b31 - bsa, m20,

Bsa m20 m21 m22 b31 - bsa, m20,

£5.44
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Bsa a10 gearbox layshaft 2nd - bsa,

Bsa a10 gearbox layshaft 2nd - bsa,

£16.15
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Bsa a10 b31 - bsa,

Bsa a10 b31 - bsa,

£3.45
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Bsa a10 b31 b33 - a7,

Bsa a10 b31 b33 - a7,

£3.90
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3508 bsa a10 plunger - 65-3508,

3508 bsa a10 plunger - 65-3508,

£9.75
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Bsa b31 b33 - b31, m20

Bsa b31 b33 - b31, m20

£12.09
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Bsa m20 m21 b31 - b31, gearbox

Bsa m20 m21 b31 - b31, gearbox

£49.99
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Bsa a10 b31 b32 b33 - b31,

Bsa a10 b31 b32 b33 - b31,

£4.80
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Bsa a10 b31 b33 swinging - b31,

Bsa a10 b31 b33 swinging - b31,

£5.98
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Bsa a10 b31 b33 swinging - bsa,

Bsa a10 b31 b33 swinging - bsa,

£160.00
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Bsa a10 b31 - ,

Bsa a10 b31 - ,

£35.00
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Gearbox clutch arm cover - gearbox,

Gearbox clutch arm cover - gearbox,

£4.33
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Bsa a10 b31 b33 outer - bsa,

Bsa a10 b31 b33 outer - bsa,

£39.99
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3067 bsa a10 b31 b33 - a7,

3067 bsa a10 b31 b33 - a7,

£8.99
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Bsa a10 b31 b33 gearbox - bsa,

Bsa a10 b31 b33 gearbox - bsa,

£19.36
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Bsa a10 b31 b33 - b33, gear

Bsa a10 b31 b33 - b33, gear

£6.00
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Bsa singles mini - 33,

Bsa singles mini - 33,

£4.65
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Bsa a10 b31 - bsa, c11

Bsa a10 b31 - bsa, c11

£39.98
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Bsa a10 b31 b33 - bsa,

Bsa a10 b31 b33 - bsa,

£67.50
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3032p gearbox outer cover - gearbox,

3032p gearbox outer cover - gearbox,

£3.25
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Bsa gearbox gear - bsa,

Bsa gearbox gear - bsa,

£29.99
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Bsa m20 m21 - bsa, b31

Bsa m20 m21 - bsa, b31

£19.99
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Bsa b31 b33 - b31-b33-m20-m21-m33, inner

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

£30.00
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Bsa a10 b31 - a10, casing

Bsa a10 b31 - a10, casing

£49.99
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Bsa b33 b31 - b33/b31, m20

Bsa b33 b31 - b33/b31, m20

£30.86
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Bsa a10 b31 b33 series - a10,

Bsa a10 b31 b33 series - a10,

£12.99
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3031 gearbox inner cover - inner,

3031 gearbox inner cover - inner,

£3.00
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Vintage bsa kickstart - vintage, g5

Vintage bsa kickstart - vintage, g5

£16.15
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Bsa m21 b31 b33 - b31, a7

Bsa m21 b31 b33 - b31, a7

£14.99
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Bsa a10 b31 - a7, b33

Bsa a10 b31 - a7, b33

£8.25
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Bsa a10 b31 - clutch, arm

Bsa a10 b31 - clutch, arm

£17.99
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Bsa b33 b31 m20 - bsa, m21

Bsa b33 b31 m20 - bsa, m21

£68.30
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4065 bsa a10 b31 - 24-4065, a7

4065 bsa a10 b31 - 24-4065, a7

£17.95
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Bsa a10 b31 b33 gearbox - b31,

Bsa a10 b31 b33 gearbox - b31,

£40.00
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Bsa a10 b31 - b33, gearbox

Bsa a10 b31 - b33, gearbox

£8.45
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Bsa b31 b33 m20 m21 - bsa,

Bsa b31 b33 m20 m21 - bsa,

£6.15
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Bsa b31 b32 b33 - b32, m20

Bsa b31 b32 b33 - b32, m20

£5.55
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3069 gearbox inner - inner, cover

3069 gearbox inner - inner, cover

£3.45
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Bsa b31 b33 m20 - m20, rigid

Bsa b31 b33 m20 - m20, rigid

£2.90
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Bsa 3005 a10 b33 - 42-3005, b31

Bsa 3005 a10 b33 - 42-3005, b31

£22.67
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Skf bsa 4065 - bsa, 24-4065

Skf bsa 4065 - bsa, 24-4065

£24.99
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📊96 listings · from £1.89 · avg £39.79
⚠️ These listings were last updated more than 12 days ago. Search for fresh listings

Browse 96 bsa gearbox b31 listings currently in our index. Prices range from £1.89 to £338.2, with an average of £39.79. 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 £338.2 — giving you a wide budget spread to work with. The average price of £39.79 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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