KURZ FS 140 17/14 Big Wheel


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KURZ FS 140 & RT1 Colour Kit Blue

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KURZ FS 140 & RT1 Colour Kit Red

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SKU: FS-140-BW Category: Tag:


  • CNC Alloy Triple Clamps
  • CNC Alloy Gear Shifter
  • Pro-Taper Two Tone Grips
  • Genuine KĂśRZ™ Shock Proof Plastics
  • FACTORY™ 770mm Forks Increased Travel
  • FACTORY™ 335mm Rear Shock Increased Travel
  • FACTORY™ MX 43 Tooth Rear Sprocket
  • FACTORY™ Gripper Seat
  • FACTORY™ T2.1 Exhaust System with Removable DB Killer
  • Improved Extended Reinforced Swing Arm
  • Newly Revised Geometry Tested and Rated Machine Welded HD Frame
  • FRC Toughened Wheels
  • KTM Style Kick Start
  • Two Piece Rear Brake Pedal with CNC Alloy Tip
  • Revised Compact Engine Bash Plate
  • Revised Mud Flap
  • Colour Options

The KÜRZ FS 140 is built for future champions fighting for victory, no matter if it is the BMB championship or a regional championship. In this scene, the new and improved KÜRZ FS 140 is considered a winner's bike. With the most powerful engine in the 140cc class and a chassis that is machine welded precision engineered for an exact balance of stiffness and torsional flex, the HD frame features class leading geometries all that deliver an accurate rider feedback, energy absorption, handling response and straight-line stability. There is simply nothing else like it.

Cutting-edge 4-stroke technology, combined with a precise 4-speed all up race transmission which sets the foundation of the KÜRZ FS’s superiority in all racing competitions. The new YX Racing 140cc Z40 engine uses the latest technology to deliver unrivalled performance in the competitive 140cc class. The engine became 0.59kg lighter and delivers improved power and ride-ability across the rev range. Key to the engine is the upgraded Z40 Camshaft which allows the power delivery to be tailored simply and more effectively than before.

The KURZ FS is suitable for the downright adventurous of 14 year old Junior riders and right upto full sized adult riders wanting the arm stretching grunt. Winners - Line up here.

This bike is the closest thing you'll get to a full size motocrosser, giving you that big bike feeling.


YX Racing Big Valve 140cc engine, Z40 camshaft, Uprated 26mm Race Carburettor, Machine Welded HD Frame, FACTORY™ Performance Suspension, Extended Reinforced Swing Arm, Race Specification HSK Twin Front and 1 Pot Rear Hydraulic Brakes with Wavey Discs,  Factory T2.1 Exhaust System with Removable DB Killer, CNC Anodised Race Chain Adjusters, Genuine KÜRZ Shock Proof Plastics, Premium 3M Race Graphics, Super T Race Coil, 1 Piece 'Fatboy' 28mm Alloy Handlebars, KMC™ Gold Drive Chain, CNC Billet Alloy Fuel Cap.

Note: This product requires part assembly, and after its initial running in stage it will require a full inspection, oil change, chain tension adjustment and for all nuts and bolts to be set to the correct torque tensions and 'Thread lock' to be used if required . A mechanically able person will be required to carry out the 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.

Off-road use only.

Supplied with manufacturers 30 day competition parts only warranty.

Colours and specification may be subject to change without notice.

Additional information

Weight 85 kg


Engine Spec YX Racing™ 140cc Z40™, Single Cylinder, 4-Stroke, Oil Cooled
Engine Oil Putoline™ Super DX4 Semi Synthetic 10W-40
Carburettor 26mm Performance Carburettor for Increased Power
Clutch Manual, Wet Multiple
Gears 4 Speed Manual N-1-2-3-4
Start Type Kick Start
Brakes Front & Rear HSK™ Hydraulic, Wavey Vented Discs, Braided Hoses with Front TWIN Pot and Rear Single Pot Hydraulic Brake Calipers, Forged Alloy Brake and Clutch Levers
Frame Machine Welded HD Frame, Graphite Powder Coated Finish
Plastics Genuine KÜRZ™​ Shock Proof Plastics with 3M™ Race Graphics
Front Suspension FACTORY™​ 770mm USD, CNC Alloy Triple Clamps
Rear Suspension FACTORY™ Long Travel 335mm Rear Shock Absorber
Wheels FRC 17/14″ SDG Big Wheels with Alloy Hubs and Matt Black Rims
Tyres 70/100-17″ / 90/100-14″ Innova Pattern Tyres
Final Transmission Front 15t / Rear 43t / Chain Type KMC™ Gold 420
Max Speed 60mph
Terrain Off-Road Use Only

Dimensions and Weights:

Dimensions (L x W x H) 1780 x 800 x 1135 mm
Wheelbase 1220 mm
Seat Height 880 mm
Kerb Weight 74kg (Without Fuel)
Fuel tank 5 Litres
Max Rider Weight 100kg

Run-In Service – 2 Hours / 1 Month From Date Of Purchase (Whichever Comes First)
Service Intervals – Every 5 Hours Use.


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