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Knex

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Home / Construction & Building Toys / Knex refurbished & used for sale | For Sale UK
Nex stem explorations - k'nex,

Nex stem explorations - k'nex,

£11.05 · Buy It Now

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Vintage 35035 45035 k nex - vintage, k'nex

Vintage 35035 45035 k nex - vintage, k'nex

£25.66 · Buy It Now

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Nex creation zone - creation,

Nex creation zone - creation,

£8.66 · Buy It Now

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Basic nex building - k'nex, 5

Basic nex building - k'nex, 5

£12.94 · Buy It Now

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Kid knex bundle approx - kid,

Kid knex bundle approx - kid,

£9.73 · Buy It Now

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Nex pieces mixed - mixed, bundle

Nex pieces mixed - mixed, bundle

£15.95 · Buy It Now

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Vintage knex black carry case - knex,

Vintage knex black carry case - knex,

£9.99 · Buy It Now

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Nex model building set - 10,

Nex model building set - 10,

£16.15 · Buy It Now

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Vintage nex orange - box, 1990s

Vintage nex orange - box, 1990s

£19.95 · Buy It Now

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Nex mix 5kg - k’nex,

Nex mix 5kg - k’nex,

£39.99 · Buy It Now

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Kid nex zoo friends bundle - kid,

Kid nex zoo friends bundle - kid,

£6.50 · Buy It Now

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Big knex bundle with - big,

Big knex bundle with - big,

£9.99 · Buy It Now

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Knex vintage green carry case - green,

Knex vintage green carry case - green,

£14.99 · Buy It Now

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Knex mega motorcycle - knex,

Knex mega motorcycle - knex,

£9.78 · Buy It Now

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Nex yellow crown gears - k'nex,

Nex yellow crown gears - k'nex,

£3.31 · Buy It Now

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Nex building set 417 - building,

Nex building set 417 - building,

£32.99 · Buy It Now

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Nex beginner fun - beginner, fast

Nex beginner fun - beginner, fast

£6.99 · Buy It Now

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Nex vintage construction - vintage, set

Nex vintage construction - vintage, set

£6.52 · Buy It Now

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Knex 950g choose your - 950g, lot

Knex 950g choose your - 950g, lot

£17.00 · Buy It Now

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Small knex motorcycle chopper - small,

Small knex motorcycle chopper - small,

£8.66 · Buy It Now

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Nex 38001 71695 mariokart - k'nex, 38001/71695

Nex 38001 71695 mariokart - k'nex, 38001/71695

£10.80 · Buy It Now

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Kid knex bundle approx 200 - kid,

Kid knex bundle approx 200 - kid,

£12.94 · Buy It Now

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Knex orange track tube - knex,

Knex orange track tube - knex,

£14.00 · Buy It Now

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Knex battlers saw zaw - 'battlers,

Knex battlers saw zaw - 'battlers,

£6.90 · Buy It Now

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Nex fast vehicles - fast,

Nex fast vehicles - fast,

£11.99 · Buy It Now

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Nex set 45015 - k'nex,

Nex set 45015 - k'nex,

£26.70 · Buy It Now

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Nex trains planes and - trains,

Nex trains planes and - trains,

£25.99 · Buy It Now

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Knex railroad pals complete - railroad,

Knex railroad pals complete - railroad,

£5.45 · Buy It Now

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Nex vintage roller - roller, coaster

Nex vintage roller - roller, coaster

£45.00 · Buy It Now

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New vintage knex - knex, model

New vintage knex - knex, model

£16.15 · Buy It Now

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Knex architecture london - architecture, eye

Knex architecture london - architecture, eye

£34.50 · Buy It Now

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Nex control crane 15213 - control,

Nex control crane 15213 - control,

£34.99 · Buy It Now

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Kidk nex bucket of - ‘bucket,

Kidk nex bucket of - ‘bucket,

£4.38 · Buy It Now

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Job lot nex huge bundle - huge,

Job lot nex huge bundle - huge,

£31.90 · Buy It Now

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Knex bundle robot - knex, orange

Knex bundle robot - knex, orange

£7.99 · Buy It Now

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Vintage nex case and - k'nex,

Vintage nex case and - k'nex,

£12.94 · Buy It Now

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Job lot mixed bundle - job,

Job lot mixed bundle - job,

£9.72 · Buy It Now

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Nex bundle job lot - bundle,

Nex bundle job lot - bundle,

£19.36 · Buy It Now

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Nex musical ferris - musical,

Nex musical ferris - musical,

£31.90 · Buy It Now

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Knex 1992 construction - knex, set

Knex 1992 construction - knex, set

£23.06 · Buy It Now

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Green nex man knex robot - man,

Green nex man knex robot - man,

£4.99 · Buy It Now

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200 classic nex knex - 200,

200 classic nex knex - 200,

£7.99 · Buy It Now

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Nex mario kart wii - kart,

Nex mario kart wii - kart,

£10.79 · Buy It Now

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Nex model building - k'nex,

Nex model building - k'nex,

£10.00 · Buy It Now

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Micro knex bundle rods - micro,

Micro knex bundle rods - micro,

£10.00 · Buy It Now

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Knex 5kg assorted - (k'nex), 1.5kg

Knex 5kg assorted - (k'nex), 1.5kg

£19.99 · Buy It Now

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Nex knex 521 piece box - 521,

Nex knex 521 piece box - 521,

£12.34 · Buy It Now

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Nex jumbo jet building - jumbo,

Nex jumbo jet building - jumbo,

£11.99 · Buy It Now

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Kid knex bundle approx - knex, 110

Kid knex bundle approx - knex, 110

£9.72 · Buy It Now

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Nex blue rod 54mm 100 - blue, x

Nex blue rod 54mm 100 - blue, x

£1.63 · Buy It Now

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Nex knex spare - knex, rods

Nex knex spare - knex, rods

£5.95 · Buy It Now

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Nex large yellow - 2, gear

Nex large yellow - 2, gear

£3.84 · Buy It Now

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Vintage knex bundle blue - vintage,

Vintage knex bundle blue - vintage,

£19.99 · Buy It Now

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Nex purple way - purple, 3d

Nex purple way - purple, 3d

£3.10 · Buy It Now

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Nex joblot over - k’nex, 2kg

Nex joblot over - k’nex, 2kg

£16.99 · Buy It Now

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Kid knex bundle 7kg over - bundle,

Kid knex bundle 7kg over - bundle,

£12.99 · Buy It Now

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Knex classix building - knex, set

Knex classix building - knex, set

£6.47 · Buy It Now

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Knex 23012 imagine - 23012, power

Knex 23012 imagine - 23012, power

£12.94 · Buy It Now

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Micro nex knex spare - micro, rods

Micro nex knex spare - micro, rods

£3.95 · Buy It Now

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Nex blue way - 3d, connector

Nex blue way - 3d, connector

£3.31 · Buy It Now

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Nex box random - k'nex, of

Nex box random - k'nex, of

£6.52 · Buy It Now

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Nex lot small wheels - lot,

Nex lot small wheels - lot,

£3.20 · Buy It Now

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Job lot mixed 1kg bundle - lot,

Job lot mixed 1kg bundle - lot,

£16.14 · Buy It Now

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Collection nex in - a,

Collection nex in - a,

£26.99 · Buy It Now

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Nex job lot - job, bundle

Nex job lot - job, bundle

£5.45 · Buy It Now

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Knex nex joblot bundle 6kg - joblot, 6kg+

Knex nex joblot bundle 6kg - joblot, 6kg+

£35.00 · Buy It Now

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Nex classics motorized - k’nex,

Nex classics motorized - k’nex,

£28.99 · Buy It Now

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Nex amazin roller coaster - 8,

Nex amazin roller coaster - 8,

£23.00 · Buy It Now

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Knex blue rod 50 - knex,

Knex blue rod 50 - knex,

£2.24 · Buy It Now

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Knex nex set - set, k'nex

Knex nex set - set, k'nex

£5.00 · Buy It Now

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Nex typhoon frenzy - k'nex,

Nex typhoon frenzy - k'nex,

£24.99 · Buy It Now

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Knex 200 axle and - 200,

Knex 200 axle and - 200,

£15.99 · Buy It Now

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200 classic nex - 200, k'nex

200 classic nex - 200, k'nex

£8.99 · Buy It Now

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Nex bundle joblot 5kg - joblot, 2.5kg

Nex bundle joblot 5kg - joblot, 2.5kg

£21.49 · Buy It Now

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Knex electric inferno - inferno, roller

Knex electric inferno - inferno, roller

£21.50 · Buy It Now

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Kid knex nex boxed complete - knex, k'nex

Kid knex nex boxed complete - knex, k'nex

£15.95 · Buy It Now

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Nex classics building sets - k'nex,

Nex classics building sets - k'nex,

£5.98 · Buy It Now

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Nex genuine1996 - k’nex,

Nex genuine1996 - k’nex,

£31.90 · Buy It Now

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Knex wheels with spare - , tyres

Knex wheels with spare - , tyres

£10.00 · Buy It Now

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200 classic nex knex - k'nex,

200 classic nex knex - k'nex,

£7.99 · Buy It Now

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Bundle cyber knex motors - of,

Bundle cyber knex motors - of,

£21.50 · Buy It Now

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Knex joblot - knex,

Knex joblot - knex,

£16.40 · Buy It Now

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Nex job lot - k’nex,

Nex job lot - k’nex,

£6.52 · Buy It Now

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Knex green rod 80 - 16, mm

Knex green rod 80 - 16, mm

£2.24 · Buy It Now

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Nex beginner model - k'nex,

Nex beginner model - k'nex,

£24.99 · Buy It Now

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Nex purple grey way - k'nex,

Nex purple grey way - k'nex,

£3.10 · Buy It Now

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Knex bundle 100x - knex, bundle-100x

Knex bundle 100x - knex, bundle-100x

£7.99 · Buy It Now

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Knex joblot 600g - knex,

Knex joblot 600g - knex,

£10.80 · Buy It Now

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Nex space shuttle - k'nex, 60pc

Nex space shuttle - k'nex, 60pc

£9.99 · Buy It Now

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Knex 8kg assorted - 1.8kg,

Knex 8kg assorted - 1.8kg,

£19.99 · Buy It Now

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Knex red battery - battery,

Knex red battery - battery,

£10.79 · Buy It Now

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Nex lot large wheels - of, 2

Nex lot large wheels - of, 2

£3.84 · Buy It Now

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Vintage nex 80s - k’nex, 90’s

Vintage nex 80s - k’nex, 90’s

£17.99 · Buy It Now

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Knex red rod - knex, cm

Knex red rod - knex, cm

£2.24 · Buy It Now

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Knex grey case with - case, original

Knex grey case with - case, original

£15.03 · Buy It Now

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Nex large blue storage box - large,

Nex large blue storage box - large,

£38.57 · Buy It Now

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📊96 listings · from £1.63 · avg £14.5
⚠️ These listings were last updated more than 20 days ago. Search for fresh listings

Browse 96 knex listings currently in our index. Prices range from £1.63 to £45, with an average of £14.5. 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 knex →

Try this: lego city bus | lego spongebob sets | lego robot | joblot lego | lego technic tractor | lego dino | lego storage brick 8 | section roller | lego minifigures lot | lego 12v

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Everything you need to know about knex

Whether you are looking for a brand-new or second-hand knex, 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 £1.63, while premium listings can reach £45 — giving you a wide budget spread to work with. The average price of £14.5 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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