18 mountain bike
18 mountain bike for sale on Ireland's largest auction and classifieds sites
Piranha frenzy inch wheel - piranha, - £103.66
Piranha frenzy inch • Wheel kids mountain • Bike gears - Free postage - New and Used
Piranha frenzy inch • Wheel kids mountain • Bike gears - Free postage - New and Used
Inch kids bike - inch, boys - £139.90
This stylish sturdy • Kids bike perfect • Gift your child - Free postage - New and Used
This stylish sturdy • Kids bike perfect • Gift your child - Free postage - New and Used
Specialized rockhopper sport - specialized, - £338.20
1994 specialized rockhopper • Sport inch frame • Paint work really - Free postage - New and Used
1994 specialized rockhopper • Sport inch frame • Paint work really - Free postage - New and Used
Carerra vulcan 18in - carerra, / - £208.70
Excellent condition used • Only handful times • Comes stand drink - Free postage - New and Used
Excellent condition used • Only handful times • Comes stand drink - Free postage - New and Used
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Boardman mht silver - boardman, 8.8 - £415.00
Bike very good • Condition wheels - Free postage - New and Used
Bike very good • Condition wheels - Free postage - New and Used
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48 listings · from £6.79 · avg £163.3
⚠️ These listings were last updated more than 15 days ago.
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Browse 48 18 mountain bike listings currently in our index. Prices range from £6.79 to £415, with an average of £163.3. 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 18 mountain bike →
Claud butler edge mountain - claud, - £195.00
Edge caters everyone • From teenagers above • Aim provide you - Free postage - New and Used
Edge caters everyone • From teenagers above • Aim provide you - Free postage - New and Used
Yoac mountain bike - mountain, dual - £189.99
Yoac full suspension • Mountain bike speed • Engineered those who - Free postage - New and Used
Yoac full suspension • Mountain bike speed • Engineered those who - Free postage - New and Used
New inch kids - new, 20 - £139.90
Wheels brakes gears • Must set fine • Tuned way they - Free postage - New and Used
Wheels brakes gears • Must set fine • Tuned way they - Free postage - New and Used
Inch kids girls - 18, bike - £141.14
Anti skid wear • Resistant wheels textured • Tread can effectively - Free postage - New and Used
Anti skid wear • Resistant wheels textured • Tread can effectively - Free postage - New and Used
Apollo slant gears brake - apollo, v-brake - £129.89
Saddle apollo mtb • 27.5 50mm travel • Quill 60mm handlebars - Free postage - New and Used
Saddle apollo mtb • 27.5 50mm travel • Quill 60mm handlebars - Free postage - New and Used
Carrera vengeance wheel - vengeance, 27.5" - £290.79
Speed shimano gears • New clarks clout • Limited edition paintwork - Free postage - New and Used
Speed shimano gears • New clarks clout • Limited edition paintwork - Free postage - New and Used
Huffy extent inch mens boys - huffy, - £150.00
All manuals instructions • Are provided when • You head outdoors - Free postage - New and Used
All manuals instructions • Are provided when • You head outdoors - Free postage - New and Used
Piranha frenzy inch - inch, wheel - £144.99
Gears twist grip • Shifters bike type • Style tyres mountain - Free postage - New and Used
Gears twist grip • Shifters bike type • Style tyres mountain - Free postage - New and Used
Calibre two - two-two, mens - £203.50
Two mtb cycle • High quality men • Mountain bike aluminium - Free postage - New and Used
Two mtb cycle • High quality men • Mountain bike aluminium - Free postage - New and Used
Unisex kids inch mountain - kids, - £52.70
Perfect condition only • Used few times - Free postage - New and Used
Perfect condition only • Used few times - Free postage - New and Used
Basis mountain bike - mountain, full - £190.99
Basis componentry vibrant • Graphics gives unique • Look furnished full - Free postage - New and Used
Basis componentry vibrant • Graphics gives unique • Look furnished full - Free postage - New and Used
New inch kids bike boys - 18-22, - £169.90
This bike also • Gives you adjustable • Can customise suit - Free postage - New and Used
This bike also • Gives you adjustable • Can customise suit - Free postage - New and Used
Inch kids bike boys - 18-24, - £154.90
This stylish sturdy • Kids bike perfect • Gift your child - Free postage - New and Used
This stylish sturdy • Kids bike perfect • Gift your child - Free postage - New and Used
Men mountain bike - mountain, - £199.00
Men mountain bike - Free postage - New and Used
Men mountain bike - Free postage - New and Used
Maxlight kinesis pro 2 - maxlight-, - £80.00
Needs proper clean • Otherwise all good • Shimano headset are - Free postage - New and Used
Needs proper clean • Otherwise all good • Shimano headset are - Free postage - New and Used
Yoac mountain bike dual - mountain, - £171.99
Yoac full suspension • Mountain bike speed • Engineered those who - Free postage - New and Used
Yoac full suspension • Mountain bike speed • Engineered those who - Free postage - New and Used
New 24 kids - 18", 22" - £164.90
This stylish sturdy • Kids bike perfect • Gift your child - Free postage - New and Used
This stylish sturdy • Kids bike perfect • Gift your child - Free postage - New and Used
Inch kids bike - 22, 24 - £162.90
This stylish sturdy • Kids bike perfect • Gift your child - Free postage - New and Used
This stylish sturdy • Kids bike perfect • Gift your child - Free postage - New and Used
Avalanche mountain bike - gt, - £35.00
Leeds bike mill • Recycling training established • 2014 service bikes - Free postage - New and Used
Leeds bike mill • Recycling training established • 2014 service bikes - Free postage - New and Used
Carrera bike - carrera, - £104.70
Carrera bike sleek • Suitable adults any • Gender made from - Free postage - New and Used
Carrera bike sleek • Suitable adults any • Gender made from - Free postage - New and Used
Yoac mountain bike 18 dual - 18, - £179.99
Link mountain bike • Those who seek • Yoac dual sus - Free postage - New and Used
Link mountain bike • Those who seek • Yoac dual sus - Free postage - New and Used
Apollo slant speed - apollo, v-brake - £129.89
Saddle apollo mtb • 27.5 50mm travel • Quill 60mm handlebars - Free postage - New and Used
Saddle apollo mtb • 27.5 50mm travel • Quill 60mm handlebars - Free postage - New and Used
Apollo slant speed - slant, v-brake - £125.89
Saddle apollo mtb • 27.5 50mm travel • Quill 60mm handlebars - Free postage - New and Used
Saddle apollo mtb • 27.5 50mm travel • Quill 60mm handlebars - Free postage - New and Used
Inch kids bike - 18-22, - £139.90
This bike also • Gives you adjustable • Can customise suit - Free postage - New and Used
This bike also • Gives you adjustable • Can customise suit - Free postage - New and Used
Ammaco eclipse inch speed - inch, 6 - £47.33
Bought about years • Ago daughter never • Really wanted learn - Free postage - New and Used
Bought about years • Ago daughter never • Really wanted learn - Free postage - New and Used
Spike girls mountain - spike, 18 - £129.99
Its eye catching • Design printed saddle • Coloured details make - Free postage - New and Used
Its eye catching • Design printed saddle • Coloured details make - Free postage - New and Used
Inch kids bike - 18, - £139.90
This stylish sturdy • Kids bike perfect • Gift your child - Free postage - New and Used
This stylish sturdy • Kids bike perfect • Gift your child - Free postage - New and Used
Voodoo mtb bike frame - bike, 18 - £30.00
Originally was fitted • Hybrid knowledge can • 27.5 also comes - Free postage - New and Used
Originally was fitted • Hybrid knowledge can • 27.5 also comes - Free postage - New and Used
Cross mens mountain bike - cross, - £159.99
Speed shimano gears • Urban saddle you • Can comfortable your - Free postage - New and Used
Speed shimano gears • Urban saddle you • Can comfortable your - Free postage - New and Used
Inch kids girls boys bike - 18, - £127.89
Specifications overall material • High carbon steel • Color pink bike - Free postage - New and Used
Specifications overall material • High carbon steel • Color pink bike - Free postage - New and Used
Boss stealth mountain bike - mountain, - £296.99
Stealth black componentry • Vibrant graphics gives • Cutting edge look - Free postage - New and Used
Stealth black componentry • Vibrant graphics gives • Cutting edge look - Free postage - New and Used
Boss vortex g18 boys - ht, boys/mens - £188.99
Wide sure grip • Knobbly mountain bike • Tyres keep you - Free postage - New and Used
Wide sure grip • Knobbly mountain bike • Tyres keep you - Free postage - New and Used
Inch kids girls boys - girls, bike - £141.14
Anti skid wear • Resistant wheels textured • Tread can effectively - Free postage - New and Used
Anti skid wear • Resistant wheels textured • Tread can effectively - Free postage - New and Used
Men voodoo braag inch - men’s, - £265.90
Men voodoo braag • Inch frame mountain • Bike features riser - Free postage - New and Used
Men voodoo braag • Inch frame mountain • Bike features riser - Free postage - New and Used
Boom 22inch kids bike - kids, - £135.90
Bicycle provide years • Fun equipped height • Adjustable saddle decorated - Free postage - New and Used
Bicycle provide years • Fun equipped height • Adjustable saddle decorated - Free postage - New and Used
Carrera mountain bike 18in - carrera, - £47.50
Sale carrera hardtail • Mountain bike frame • Black green accents - Free postage - New and Used
Sale carrera hardtail • Mountain bike frame • Black green accents - Free postage - New and Used
Speed mountain bike - speed, cycle - £6.79
Chain tool required • You need less • Shorten number links - Free postage - New and Used
Chain tool required • You need less • Shorten number links - Free postage - New and Used
Carrera sulcata limited - sulcata, ed - £179.99
This stylish green • Bike boasts flat • Handlebar front suspension - Free postage - New and Used
This stylish green • Bike boasts flat • Handlebar front suspension - Free postage - New and Used
Boss stealth mountain bike 26 - stealth, - £187.89
Boss stealth 26x18 • Full suspension black • Pink tyres 1.95 - Free postage - New and Used
Boss stealth 26x18 • Full suspension black • Pink tyres 1.95 - Free postage - New and Used
Inch kids bike boys - kids, - £149.90
This stylish sturdy • Kids bike perfect • Gift your child - Free postage - New and Used
This stylish sturdy • Kids bike perfect • Gift your child - Free postage - New and Used
Basis toro mountain - basis, - £211.99
Gearing taken care • Shimano tourney speed • System indexed using - Free postage - New and Used
Gearing taken care • Shimano tourney speed • System indexed using - Free postage - New and Used
Claud butler edge - edge, mountain - £312.70
Bike bought few • Months back only • Used handful times - Free postage - New and Used
Bike bought few • Months back only • Used handful times - Free postage - New and Used
Scott scale 760 mountain - 760, - £224.30
This mountain bike • Scott scale 760 • Men lightweight aluminium - Free postage - New and Used
This mountain bike • Scott scale 760 • Men lightweight aluminium - Free postage - New and Used
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Everything you need to know about 18 mountain bike
Whether you are looking for a brand-new or second-hand 18 mountain bike, eBay offers one of the largest selections available online. With 48 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 £6.79, while premium listings can reach £415 — giving you a wide budget spread to work with. The average price of £163.3 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.