Gas Gas MC125 2 Stroke Motocross Bike, New 2026 Model, In Stock & Special Price
01933312827 / UK Delivery / Finance Available
GasGas MC125 2026 Motocross Bike in stock now @ John Lee & Sons Motorcycles
The sound of a 125cc 2-stroke ripping around a motocross track is one of life's simple pleasures! Step forward the awesome MC 125. This little ripper is fully equipped with everything you'll need to find the fastest way around any circuit. We're talking a powerful motor, an updated frame for 2025 with improved handling, a close-ratio 6-speed gearbox, plush WP suspension, and strong brakes. Yep, that's right, our MC 125 is the real deal, and it sits proudly at the top of the small-bore pre-mix class!
Our 2-stroke motors are fuelled using Throttle Body Injection - a 39mm Keihin throttle body, to be precise - which works together with the Engine Contol Unit (ECU) to deliver the perfect mix of fuel and air. The end result? Crisp, clean running motors that create smooth, strong power. A new protection cap for the CPC fuel connector adds extra safety and keeps dirt out, while the in-line fuel filter remains easily accessible for maintenance.
- All Part Exchanges Considered
- Next-day nationwide delivery is available starting at £95 + VAT
- We also carry a wide range of clothing and accessories for all makes and models.
- Finance available using Santander @ 9.4% APR
- Official GasGas Dealer
- Over 60 Years Of Off-road Experience
Price Promise
We guarantee competitive pricing across our full range of new and used bikes.
Certified Dealer
Officially authorised and trusted to supply and support leading motorcycle brands.
Extended Warranty
Added peace of mind with comprehensive warranty options available.
4.8 Google Rating
Highly rated by our customers for service, expertise, and reliability.
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What Our Customers Say
4.8 rating from our customers
warren stacey
5 months ago
Purchased a 25 TXT Racing today. Easy painless transaction Brilliant deal from Chas, Fantastic customer service, will definitely be using again cannot recommend them enough
Ingrid Leatherdale
1 months ago
Fantastic service They could select boot and helmet size at a glance. Amazing choice for trials equipment available and very competitive prices. So glad I found them.
AK
3 months ago
Purchased my first 2T here, a Beta 200. It was strange, I’d tell friends where I was buying it and they all told me, “oh Chas will look after you.” And look after me he did! DVLA caused some delays and Chas took care of it all and helped me throughout. My next bike will also be bought from Chas! I’d have no hesitation in recommending John Lee & Sons.
RR Sendit
2 months ago
I just want to say a massive thanks to Chaz and the guys at John Lee & Sons, there customer service skills are a rare thing to find now a days and they go above and beyond to make sure you as a customer are happy with everything. I couldn't recommend them enough. -Reece C
Jack Stevens
3 months ago
Fantastic service from start to finish from Chas and the team here! First time buying a new bike and was very happy with the process, will definitely be returning when it's time for another and highly recommend! Thanks all!
Sam Gage
3 months ago
Fantastic company and friendly staff. Had a great experience with the Purchase of my son’s electric duo bike. Even when I encountered an issue it was quickly resolved.
Brian Hughes
3 months ago
Particularly for the service from Chas. Greatly appreciate the top customer service he has given me on a bike that was supplied by John Lees which I won from a competition site. Really unexpected as I didn't purchase it as a customer
Ander L
1 years ago
I reached out regarding the Beta Xtrainer 300. I am currently researching the market to see what options I have for an enduro/trail bike. I am fairly short so before putting this bike on my shortlist, I wanted to check the seat height in person and see if I could actually reach the ground with one or both feet. They replied straightaway, and they even offered to unbox a brand new bike and put it together for me to check. I went to the shop on Saturday and I must say that they were very helpful. Went to the garage on the back and brought out an Xtrainer for me to check. Also explained what options I have in terms of lowering the bike etc… I didn’t get the name of the young guy that helped me, but if you happen to read this, thank you! I have dealt with other big brand dealers (even “premium” like MV Agusta, Ducati…), and this has been the best experience. Very friendly and approachable. Even knowing that I just wanted to check the bike out and had no intention of buying yet. Also, they seem to be a family run business which for me is a massive plus. I will definitely buy the bike here if I end up going for the Beta. Thank you!