M2R Racing KM140MX 140cc 17/14 86cm Red Dirt Bike

98.00€  755.00€
Model: model114

The KM140MX Pit Bike

The KM140 MX pit bike is the ideal bike for riders taking the next step up from a mini dirt bike or riders aged 14 and up.

The CRF70 range of bikes are bigger than the equivalent CRF50 range by around 10cm, making them much more comfortable for adults and teens when riding “in the seat”.

Equipped with a 140cc engine that inspires confidence due to its lovely power delivery, this little beauty can take anything in its stride!

The KM140 MX is equipped with the latest CRF70 chassis and our engineers have fitted an oil cooled high performance YX Motorsport Race engine to match!

This spec M2R engine won the Fab Racing British Mini Bike Championships, beating every other brand of pit bike!

From field and gravel tracks to a full blown Moto X course, the KM140 MX will perform splendidly. (For MX we recommend the excellent DNM Rear shock upgrade).

The KM140MX has a 4 speed manual gearbox with gears being a simple arrangement of neutral to fourth - (N -1-2-3-4) or 4 - up.

Even some of the world's best riders use our pit bikes!

All spares and upgrades are available from.

** This product requires assembly of Handlebars, Front wheel, Front mud guard, and rear suspension attaching before use. Please also give the bike a full inspection, change oil and check chain tension.


  • M2R RACING 140cc race engine
  • 26mm race carb
  • M2R racing dual foam air filter
  • Race pattern N1234 gearbox – Kick in gear start
  • CRF70 chromoly frame
  • Alloy swing arm - extended
  • M2R RACING big bore CNC thumper exhaust
  • Piggy back rear shock absorber
  • Oil filled leading front axle hydraulic front forks
  • Lightweight CNC oil cooler
  • Hydraulic brake calipers
  • M2R RACING double piston front brake
  • M2R RACING wavey disk brakes
  • Engine bash plate
  • M2R RACING clutch and brake levers
  • Black Steel 17 inch front wheel / 14 inch rear wheel
  • Agressive motoCross tyres
  • High strength handlebars with brace bar and pad
  • Alloy filler cap
  • Re-enforced 428 KMC gold chain
  • 3M Graphics

Support: Unlike most other online retailers, offer a full backup service and FREE technical support to all of our customers. We stock standard parts for all our bikes and buggies and have an expanding range of performance parts available.

Note: This product REQUIRES ASSEMBLY.

A mechanically able person will be required to carry out the assembly and maintenance of this product. You should be prepared to maintain and fit parts to this product when required. DO NOT purchase this product unless you are able to maintain it.

Pre-Assembled: If you prefer you can pay to have your purchase fully assembled by one of our skilled technicians.

*** This item must be built up and PDI'd to qualify for your 30 day competition warranty.

"Rockstar" branding now removed and has replaced with model name for 2016 models.

Supporting Documentation