20 mountain bikes
20 mountain bikes for sale on Ireland's largest auction and classifieds sites
Inch mountain bike - mountain, - £88.98
Gross weight 12.65kg • 27.88lbs maximum bearing • Capacity 85kg 187lbs - Free postage - New and Used
Gross weight 12.65kg • 27.88lbs maximum bearing • Capacity 85kg 187lbs - Free postage - New and Used
Dallingridge melody girls - dallingridge, 20" - £158.99
Kitted 1.95 all • Terrain tyres ensure • Traction regardless condition - Free postage - New and Used
Kitted 1.95 all • Terrain tyres ensure • Traction regardless condition - Free postage - New and Used
Huffy korros mountain bike - korros, - £204.99
All manuals instructions • Are provided gears • Speed fork forged - Free postage - New and Used
All manuals instructions • Are provided gears • Speed fork forged - Free postage - New and Used
Basis princess girls - 20", - £158.99
Handlebars junior mtb • Riser new autumn • 2022 princess basis - Free postage - New and Used
Handlebars junior mtb • Riser new autumn • 2022 princess basis - Free postage - New and Used
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Barracuda charge wheel - charge, - £199.99
Fierce bold design • This bike will • Have your child - Free postage - New and Used
Fierce bold design • This bike will • Have your child - Free postage - New and Used
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48 listings · from £52.7 · avg £186.32
⚠️ These listings were last updated more than 98 days ago.
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Browse 48 20 mountain bikes listings currently in our index. Prices range from £52.7 to £883, with an average of £186.32. 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 20 mountain bikes →
Youth kids mountain bike - youth, 20" - £299.99
Rear derailleur shimano • Tz50 7spd shifter • Fork sunpeed youth - Free postage - New and Used
Rear derailleur shimano • Tz50 7spd shifter • Fork sunpeed youth - Free postage - New and Used
Inch mountain bike speed - inch, - £87.99
Gross weight 12.65kg • 27.88lbs maximum bearing • Capacity 85kg 187lbs - Free postage - New and Used
Gross weight 12.65kg • 27.88lbs maximum bearing • Capacity 85kg 187lbs - Free postage - New and Used
Inch mountain bike - mountain, 7 - £84.89
Mudguards both front • Rear wheels are • Effectively blocking water - Free postage - New and Used
Mudguards both front • Rear wheels are • Effectively blocking water - Free postage - New and Used
Inch mountain bike speed - 20, - £98.46
This kids mountain • Bike perfect ride • Outdoor adventures front - Free postage - New and Used
This kids mountain • Bike perfect ride • Outdoor adventures front - Free postage - New and Used
Inch mountain bike speed - 20, - £90.04
This20 kids mountain • Bike perfect ride • Outdoor adventures front - Free postage - New and Used
This20 kids mountain • Bike perfect ride • Outdoor adventures front - Free postage - New and Used
Dallingridge melody girls - dallingridge, - £148.99
Kitted 1.95 all • Terrain tyres ensure • Traction regardless condition - Free postage - New and Used
Kitted 1.95 all • Terrain tyres ensure • Traction regardless condition - Free postage - New and Used
Inch mountain bike speed - inch, - £98.00
This20 kids mountain • Bike perfect ride • Outdoor adventures front - Free postage - New and Used
This20 kids mountain • Bike perfect ride • Outdoor adventures front - Free postage - New and Used
Huffy extent inch aqua blue - 20-inch, - £208.99
Speed mircoshift twist • Shift gears will • Help your child - Free postage - New and Used
Speed mircoshift twist • Shift gears will • Help your child - Free postage - New and Used
New 22inch kids bike - new, - £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
Inch kids bike - 22, 24 - £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
Inch mountain bike - bike, speed - £129.79
Mudguards both front • Rear wheels are • Effectively blocking water - Free postage - New and Used
Mudguards both front • Rear wheels are • Effectively blocking water - Free postage - New and Used
Professional diva wheel - diva, - £179.99
Professional diva kids • Bike young riders • Big dreams flair - Free postage - New and Used
Professional diva kids • Bike young riders • Big dreams flair - Free postage - New and Used
New inch kids bike - inch, - £162.90
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 mountain bike speed - mountain, 7 - £90.89
Mudguards both front • Rear wheels are • Effectively blocking water - Free postage - New and Used
Mudguards both front • Rear wheels are • Effectively blocking water - Free postage - New and Used
Falcon samurai inch boys - falcon, - £185.99
Most suitable children • Aged years well • Being great looking - Free postage - New and Used
Most suitable children • Aged years well • Being great looking - Free postage - New and Used
Inch mountain bike - inch, 7 - £104.99
Gross weight 12.65kg • 27.88lbs maximum bearing • Capacity 85kg 187lbs - Free postage - New and Used
Gross weight 12.65kg • 27.88lbs maximum bearing • Capacity 85kg 187lbs - Free postage - New and Used
Dallingridge brave junior - brave, - £148.99
Dallingridge raven boys • Full suspension mountain • Bike mtb wheel - Free postage - New and Used
Dallingridge raven boys • Full suspension mountain • Bike mtb wheel - Free postage - New and Used
Inch mountain bike - mountain, speed - £101.99
Ideal kids teens • Theadjustable seat height • Andergonomic design make - Free postage - New and Used
Ideal kids teens • Theadjustable seat height • Andergonomic design make - Free postage - New and Used
Inch mountain bike - bike, speed - £104.69
Gross weight 12.65kg • 27.88lbs maximum bearing • Capacity 85kg 187lbs - Free postage - New and Used
Gross weight 12.65kg • 27.88lbs maximum bearing • Capacity 85kg 187lbs - Free postage - New and Used
Basis princess girls - princess, 20" - £199.99
Handlebars junior mtb • Riser new autumn • 2022 princess basis - Free postage - New and Used
Handlebars junior mtb • Riser new autumn • 2022 princess basis - Free postage - New and Used
Inch mountain bike speed - 7, - £100.44
This20 kids mountain • Bike perfect ride • Outdoor adventures front - Free postage - New and Used
This20 kids mountain • Bike perfect ride • Outdoor adventures front - Free postage - New and Used
Scott roxter wheels - roxter, 20" - £274.99
Scott roxter mountain • Bike disc wheels • Recomended years 110 - Free postage - New and Used
Scott roxter mountain • Bike disc wheels • Recomended years 110 - Free postage - New and Used
New inch bike mountain - 20, - £128.88
Foldable yes suitable • Adults teens folding • Bike speed perfect - Free postage - New and Used
Foldable yes suitable • Adults teens folding • Bike speed perfect - Free postage - New and Used
Inch unisex mountain - 20, bike - £139.44
Package included mountain • Kettle holder storage • Bag english installation - Free postage - New and Used
Package included mountain • Kettle holder storage • Bag english installation - Free postage - New and Used
Inch avoca fs20 mountain - 20, - £259.97
Bright blue design • Adds eye catching • Style encouraging children - Free postage - New and Used
Bright blue design • Adds eye catching • Style encouraging children - Free postage - New and Used
Inch unisex mountain bike - unisex, - £125.80
Description cycling great • Exercise that can • Help your child - Free postage - New and Used
Description cycling great • Exercise that can • Help your child - Free postage - New and Used
Inch mtb bike tricycle - 20, - £139.44
Description cycling great • Exercise that can • Help your child - Free postage - New and Used
Description cycling great • Exercise that can • Help your child - Free postage - New and Used
Professional dude kids - dude, - £179.99
Dude kids bike • Your child • Made specifically young - Free postage - New and Used
Dude kids bike • Your child • Made specifically young - Free postage - New and Used
Basis gator mountain - gator, bike - £169.99
Above beyond exceed • Expectation junior cycling • Following success hardtail - Free postage - New and Used
Above beyond exceed • Expectation junior cycling • Following success hardtail - Free postage - New and Used
Yoac mountain bike dual - yoac, - £195.99
Yoac dual suspension • Mountain bike built • Adventure versatility speed - Free postage - New and Used
Yoac dual suspension • Mountain bike built • Adventure versatility speed - Free postage - New and Used
Kids mountain bike - 20", - £88.99
Kettle length 19cm • Holder piece taren • Flexible smooth allowing - Free postage - New and Used
Kettle length 19cm • Holder piece taren • Flexible smooth allowing - Free postage - New and Used
Inch kids bike - 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
Boys summit mountain bike - mountain, 6 - £52.70
Boys summit mountain • Bike durable sturdy • Gear shimano system - Free postage - New and Used
Boys summit mountain • Bike durable sturdy • Gear shimano system - Free postage - New and Used
Bucklos 20x4 inch - 20x4.0, - £124.73
Bucklos 20in single • Air shock fat • Fork 32mm stanchion - Free postage - New and Used
Bucklos 20in single • Air shock fat • Fork 32mm stanchion - Free postage - New and Used
Electric bike adults 0 - electric, - £669.00
Battery 48v 15.6ah • Hassle free assembly • Pre assembled complicated - Free postage - New and Used
Battery 48v 15.6ah • Hassle free assembly • Pre assembled complicated - Free postage - New and Used
Dallingridge brave junior - brave, - £159.99
Dallingridge raven boys • Full suspension mountain • Bike mtb wheel - Free postage - New and Used
Dallingridge raven boys • Full suspension mountain • Bike mtb wheel - Free postage - New and Used
Huffy korros inch speed - korros, 20-inch - £220.00
All manuals instructions • Are provided type • Children hardtail mountain - Free postage - New and Used
All manuals instructions • Are provided type • Children hardtail mountain - Free postage - New and Used
Inch mountain bike speed - mountain, 7 - £108.69
Gross weight 12.65kg • 27.88lbs maximum bearing • Capacity 85kg 187lbs - Free postage - New and Used
Gross weight 12.65kg • 27.88lbs maximum bearing • Capacity 85kg 187lbs - Free postage - New and Used
New inch kids bike - 18-22, girls - £162.90
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
Ace stomper wheels - gt, - £174.99
Ace stomper mountain • Bike wheels excellent • Condition few minor - Free postage - New and Used
Ace stomper mountain • Bike wheels excellent • Condition few minor - Free postage - New and Used
Inch mountain bike speed - bike, 7 - £128.39
Bothfront rear mudguards • Keep rider clean • Dry during wet - Free postage - New and Used
Bothfront rear mudguards • Keep rider clean • Dry during wet - Free postage - New and Used
Electric bike adults 0 - bike, 20 - £665.00
Easy assembly pre • Quicker enjoy your • Riding style fat - Free postage - New and Used
Easy assembly pre • Quicker enjoy your • Riding style fat - Free postage - New and Used
Emoko c93 bike - emoko, 48v - £883.00
Battery capacity 48v • 20ah removable bike • Equipped 10w led - Free postage - New and Used
Battery capacity 48v • 20ah removable bike • Equipped 10w led - Free postage - New and Used
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Everything you need to know about 20 mountain bikes
Whether you are looking for a brand-new or second-hand 20 mountain bikes, 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 £52.7, while premium listings can reach £883 — giving you a wide budget spread to work with. The average price of £186.32 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.