OneMoto™

OneMX™ | PX3S | 140CC | 4 Stroke | Petrol Dirt Bike

£949
/
Tax included. Shipping calculated at checkout.

Are you the parent of a teenage dirt bike enthusiast? If that's the case, then look no further than the OneMX™ PX3S OneMoto Teen 140cc Petrol dirt bike!

Not only is it equipped with a reliable and powerful 140cc mini bike engine, but it also features upgraded grippy tyres and flexible suspension for maximum fun and excitement.

Your teen will love tearing up the trails on this bad boy, which can reach speeds of between 50km/h and 70km/h depending on the skill of the rider. Plus, it's suitable for both wet and dry conditions, so there's no need to bring the fun to a halt if it starts raining. And with its reasonably priced price tag, it's a great value for money. 

Make your teenager's dirt bike dreams a reality with the OneMX™ PX3S OneMoto Teen 140cc Petrol dirt bike!

Assembly is required for this bike, and you would also need to apply any stickers upon delivery. RiiRoo also offers free delivery to the United Kingdom mainland.

Note: This model is equipped with 4 forward gears only.

Speed & Performance

  • Approx Max Speed: 70 KM/h
  • Transmission: Rear shock: Alloy rear shock
  • Gears: 4 Gears
  • Stroke: 4-Stroke
  • Cooling Method: Air cooled
  • Petrol Type: Unleaded

    • Suspension & Brakes

  • Front Brakes: Yes
  • Rear Brakes: Yes
  • Front Shocks: Telescopic Spring-hydraulic
  • Rear Shocks: Coil Spring
  • Brake Type: Disk

    • Dimensions & Weights

  • Box Dimensions: 148 x 66 x 38CM
  • Box Weight: 40KG
  • Product Dimensions: 174 x 74 x 108CM
  • Product Weight: 85KG
  • Height to Seat: 600mm
  • Max User Weight: 70KG

    • Other

  • Start-Up Method: Kick Start
  • Working Lights: No

    • Delivery to the United Kingdom is on a next day service as long as you order by 1 PM and it is included in the price :)

    Delivery to Northern Ireland is a 2-3 day service; however, this will incur a surcharge :(

    Please Note: Shipping orders and returns outside of the UK will incur a customs fee, so please be sure to factor this in when ordering or returning items.

    Given the varied sizes of the products on offer, we are unable to calculate shipping for you at checkout, therefore please contact our support so they can get a delivery price for you. 

    As an alternative, you can checkout as usual and wait for our customer service team to get in touch with you to provide a quote. 

    We also can ship to most European countries; however, you will need to contact our customer service team for a delivery quote.

    Most of our products will be delivered using a specialised carrier service, and because of this, it is essential you have someone to accept delivery on the scheduled date specified.  A failed delivery will incur additional charges :(.

    Now that we have started selling Petrol dirt bikes, buggies, and quad bikes, we thought it would be a good idea to provide an explanation of the different age ranges that these toys are suitable for.

    Providing a specific age range for these toys is extremely difficult, due to the fact that children come in all different shapes and sizes. Also, what is deemed acceptable to one parent isn’t acceptable to another.

    For that reason, please take this as a rough guideline of the ages these toys are suitable for. It goes without question that the suitability of each product we sell is at the parents discretion. The weight, height and skill level of the person using the toy also needs to be considered.

    We Have 2 Main Categories of Bikes - Dirt Bikes & Pit Bikes

    Pit bikes are generally smaller than dirt bikes in appearance and features. This makes it difficult to choose an appropriate bike since there are so many different varieties of bikes. 

    We ask that you take care when ordering your bike to ensure it is the right weight, height and power and features you are looking for.

    The Pit and Dirt Bikes have a minimum user age of 15+. These are extreme guidelines and will vary depending on the height, weight and skill level of each child.

    We Have 3 Main Categories of Quad Bikes

    There are no maximum ages for these quad bikes. However, OneMoto has a guideline for minimum age use.

    Mini Quads

    These quad bikes are designed for children from the age of 7 and upward. The suitability of each product we sell is at the parents discretion. The mini quads range from 250w to 500w in the electric range and 50cc - 80cc in the petrol range.  We will have more powerful versions under the same category, however, based on customer feedback these should be reserved for much older kids and adults.

    Kids Quads

    These quad bikes are designed for children from the age of 10 and upward. The suitability of each product we sell is at the parents discretion. The child quads range from 500w - 1000w for the electric range and  50cc - 250cc for the petrol range.

    Adult Quads

    There really isn’t a minimum or maximum age for the adult quads, so there was no need for us to set any other guidelines for them other than they are designed specifically for adult use. The adult quad bikes range from 150cc+.

    Buggies & Go Karts

    There are no maximum ages for these buggies and go karts. However, OneMoto has a guideline for minimum age use which is 6+. With this, let us stress that this is purley at a parent’s discretion. Bear in mind that these are pretty powerful machines.

    Customer Reviews

    Based on 11 reviews
    45%
    (5)
    9%
    (1)
    9%
    (1)
    9%
    (1)
    27%
    (3)
    J
    Jonathan D.
    140cc

    Brill bike easy to put together fast though its a 140cc but its a 150cc

    User picture
    L
    Leanne B.
    140cc

    The worst customer service you will ever meet they don’t get back touch with you no phone line or anything paid nearly 900 for my daughter bike for a Christmas present starts then cut straight out emailed them on 25th December nearly a month and still left with a broke bike and nobody is doing nothing about it don’t buy from these as you if you have problems they don’t care they quick enough to take your money but not quick enough to help you when it’s there fault it’s main problem if the bike won’t start

    M
    Mark l.
    Quad ATV

    got a quad ATV for Christmas the carburetor is leaking petrol everywhere and all most set us on fire i have tried to contact riiroo with no success i have emailed them with no reply never ever bye from here the customer service is disgusting

    Thank you for your review, Mark, and we’re truly sorry about the issue with your ATV’s carburetor. A fuel leak is a serious concern, and we’d like to address this as a priority. Please email us with your order details and a description of the issue so we can review and provide a resolution as quickly as possible. Thank you for bringing this to our attention.

    D
    David H.
    140CC bike

    Bought for my son for Christmas. Bike runs and works flawless with plenty of power. The only advise I’ll give is that upon receiving the bike there was minimal information on how to build the bike, there is not many videos available and trust me when I say I spent hours searching. For a novice like me it was a struggle but I got there in the end. Overall I would recommend this site and the bike.

    Hi Dave,

    Thank you for your review! It’s great to hear the 140CC bike has been running flawlessly and has plenty of power—sounds like it was a brilliant Christmas gift for your son!

    We appreciate your feedback about the assembly instructions and understand how challenging it can be for a first-timer. Your suggestion is invaluable, and we’ll work on improving the resources available to make assembly easier.

    Thanks again for recommending both the bike and our site, and we hope your son continues to enjoy his new ride!

    Best regards,
    The RiiRoo Team

    A
    Anonymous
    140 cc dirtbike!

    my daughters bike has came in and the carbonater is not working! does not let any throttle cable through and back wheel is popped. front suspension is locked DO NOT BUY!

    Thank you for leaving this review. We’re so sorry to hear about the issues with your daughter’s bike, especially with the carburetor, throttle cable, and suspension. Please reach out to our Customer Service team so we can make this right and get everything working properly for you.

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    Why choose us?

    Because we are One

    OneMoto™ has been years in the making, taking all the learnings from our sister site RiiRoo.com.  Two Sites One Goal: Get Kids & Adults in the OutDoors by Providing Exciting & Enticing Products!

    Testimonials

    Couldn't have asked for more.  It got delivered in 2 days and it is exactly what they said it would be! The manual was missing from the box and their support sent it electronically within the hour!

    Maria W

    The choice of products on offer is reason enough to spend hours on their website.  I must have watched at least 30 product videos before I pulled the trigger.  Quick Delivery and a good product.

    Louise Pertonu
    Back to Shop All Petrol