125cc Motocross Bikes For Sale On eBay

Browse current 125cc motocross bikes, including popular two-stroke options like Honda CR125 motocross bikes and Kawasaki KX125 motocross bikes.

A 125cc MX bike is a popular choice for riders moving up from smaller youth bikes, lighter adult riders, and anyone who wants a responsive 2-stroke or entry-level race bike. Always check the advert details, service history, frame condition and seller information before buying.

Disclosure: Our goal is to feature items and services that we think you’ll find interesting and useful related to Motocross Bikes & Dirtbike Racing. For certain products and links from this site, we may get a small share of the revenue from the sale from our commerce partners. The actual product won't cost you any more, revenue is generated through advertising of the products and services on this site. When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
116 matching listings

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Best MX Bike 125cc Finds

Compare current 125cc motocross bikes, with picks that suit riders moving up from youth bikes or looking for a lighter adult machine.

Best Offer UK seller
Yamaha YZ 125 2025 - Low hours

Yamaha YZ 125 2025 - Low hours

£5,195.00
Condition
Used
Buying
Best Offer
Seller
BUSINESS
rhs-motorcycles - BA5***, GB
High value
View on eBay
UK seller Business seller
Razor Dirt Rocket MX125 Electric Motocross Bike Vibrant Pink 12 Volt Ages 7 +

Razor Dirt Rocket MX125 Electric Motocross Bike Vibrant Pink 12 Volt Ages 7 +

£269.00
Shipping +£6.59
Condition
New
Buying
Buy It Now
Seller
BUSINESS
scootershop - BS49***, GB
Budget pick 125cc
View on eBay
UK seller Business seller
RFX Hour Meter for Yamaha YZ125 YZ250 2002 - 2026 Motocross Bike

RFX Hour Meter for Yamaha YZ125 YZ250 2002 - 2026 Motocross Bike

£19.99
Shipping +£3.99
Condition
New
Buying
Buy It Now
Seller
BUSINESS
moto-connection-worldwide - DL10***, GB
Budget pick 125cc
View on eBay
Best Offer UK seller
YAMAHA YZ125 2025 - 31.3 HOURS - 2 STROKE

YAMAHA YZ125 2025 - 31.3 HOURS - 2 STROKE

£4,950.00
Condition
Used
Buying
Best Offer
Seller
INDIVIDUAL
rpm_trading - HP3***, GB
125cc Recent model
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More matching listings

116 listings
Razor Dirt Rocket MX125 Electric Motocross Bike Vibrant Pink 12 Volt Ages 7 +

Razor Dirt Rocket MX125 Electric Motocross Bike Vibrant Pink 12 Volt Ages 7 +

£269.00
Budget pick
View on eBay
RFX Hour Meter for Yamaha YZ125 YZ250 2002 - 2026 Motocross Bike

RFX Hour Meter for Yamaha YZ125 YZ250 2002 - 2026 Motocross Bike

£19.99
Budget pick
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2025 Yz 125 Monster Edition 5 Hours From New Yamaha Yz 125 Fully Road Legal

2025 Yz 125 Monster Edition 5 Hours From New Yamaha Yz 125 Fully Road Legal

£5,895.00
High value
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Yamaha yz125 Monster edition. motocross bike

Yamaha yz125 Monster edition. motocross bike

£3,995.00
125cc
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2006 Yz125 Yamaha Motocross Bike 125cc Blue

2006 Yz125 Yamaha Motocross Bike 125cc Blue

£2,750.00
125cc
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2026 Yamaha Yz125 70th Anniversary Edition Motorcycle Model

2026 Yamaha Yz125 70th Anniversary Edition Motorcycle Model

£6,500.00
High value
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KTM SX 125 2025 - 0 hr Fresh Rebuild tc mc 250 150 yz

KTM SX 125 2025 - 0 hr Fresh Rebuild tc mc 250 150 yz

£4,500.00
125cc
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Kawasaki Kx 125, STUNNING KX125,HGS,V FORCE,RESTYLE,RARE 2007 MODEL,

Kawasaki Kx 125, STUNNING KX125,HGS,V FORCE,RESTYLE,RARE 2007 MODEL,

£3,995.00
125cc
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2x 2024 KTM SX 125 Only 11-Hours One-Owner Immaculate Great 85 Progression Bikes

2x 2024 KTM SX 125 Only 11-Hours One-Owner Immaculate Great 85 Progression Bikes

£4,290.00
125cc
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Suzuki RM125 spark plug BR9EG motocross NGK

Suzuki RM125 spark plug BR9EG motocross NGK

£9.80
Budget pick
View on eBay

Listings open on eBay. Check seller, delivery and returns on the eBay listing.

Disclosure: Our goal is to feature items and services that we think you’ll find interesting and useful related to Motocross Bikes & Dirtbike Racing. For certain products and links from this site, we may get a small share of the revenue from the sale from our commerce partners. The actual product won't cost you any more, revenue is generated through advertising of the products and services on this site. When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

125cc motocross bike FAQs

Are 125cc motocross bikes good for beginners?

A 125cc motocross bike can suit some developing riders, especially those with clutch and off-road experience, but suitability depends on rider size, confidence and the specific bike.

What should I check before buying a used 125cc motocross bike?

Check engine condition, top-end history, gearbox feel, suspension, wheel bearings, frame condition, tyres, chain and sprockets, and whether the advert details match the bike.

Are 125cc motocross bikes usually two-stroke?

Many popular 125cc motocross bikes are two-strokes, including models like Honda CR125, Kawasaki KX125 and Yamaha YZ125, but always check the exact listing details.

How often does a used 125cc motocross bike need servicing?

Service needs depend on use, condition and maintenance history. Ask about recent oil changes, air filter care, top-end work and any receipts before buying.