Sex on Wheels.
The beauty of the TM & KTM 144's is they are purpose built bikes not bored out 125's.
Check specs below.
MX 144
Technical detailed
Engine: 2T TM RACING
--------------------------------------------------------------------------------
Bore and Stroke: 56 x 58,2 (54 x 54.5)
--------------------------------------------------------------------------------
Displacement: 143,35cc (123.5cc)
--------------------------------------------------------------------------------
Compression ratio: N.D.
--------------------------------------------------------------------------------
Kw power: N.D.
--------------------------------------------------------------------------------
Intake: V-Force Reed valve
--------------------------------------------------------------------------------
Fuel system: Keihin PWK 38 Carburettor
--------------------------------------------------------------------------------
Fuel type: Unleaded fuel / 3,5% Mix oil
--------------------------------------------------------------------------------
Ignition type: Kokusan CDI Electronic with variable advance with two selectable maps
--------------------------------------------------------------------------------
Primary drive: Straight ? tooth gear
--------------------------------------------------------------------------------
Cluth: Multiple-disk in oil-bath with hydraulic control
--------------------------------------------------------------------------------
Gear: 5 gears
--------------------------------------------------------------------------------
Cooler System: Coolant liquid with pump
--------------------------------------------------------------------------------
Frame: Alluminium perimetral
--------------------------------------------------------------------------------
Front fork: Marzocchi USD 50mm
--------------------------------------------------------------------------------
Rear shock: Sachs Boge (optional Ohlins o TM )
--------------------------------------------------------------------------------
Front tyre: 80 / 100 x 21
--------------------------------------------------------------------------------
Rear tyre: 100 / 90 x 19
--------------------------------------------------------------------------------
Front brake: Braking wave Disk 270 mm. With Nissin pump and caliper
--------------------------------------------------------------------------------
Rear brake: Braking wave Disk 245 mm. With Nissin pump and caliper
--------------------------------------------------------------------------------
Tank: Plastic (8,7 Litres)
--------------------------------------------------------------------------------
Weight:
--------------------------------------------------------------------------------
MX and Enduro 144 cc engine
New cylinder and head
Repositioning of the reed-valve on the crankcase
New carburetor manifold
New airbox manifold
New filter cage
Electronic valve on the exhaust
New crankshaft bearings
New HGS exhaust system
HGS silencer
The carried out modifications will increase power through the whole range.
144cc. TM have not rested on their laurels with their 144cc engine either and the 2013 engine for MX and Enduro models now shares the same TM electronic exhaust-valve system, that has been proven to be a significant aid in engine performance and control at any given rpm, as fitted to the 125cc engines. The adaption of the TMEES system means the 2013 144cc engine features a totally new cylinder and cylinder head along with the all the other changes that have been made to its slightly smaller capacity brethren, changes including new main bearings tailored to the 144cc specific crankshaft with its own specific billet machined connecting rod. A new intake system featuring a new air filter cage and new manifolds for both the airbox and carburetor, these changes are also matched to a revised position of the V-Force reed valve on the crankcases. New programming to the ECU modules for both ignition spark control and powervalve operation also feature combined with alterations to fueling and carburetion setting. As with the 125cc engine the 144cc powerplant will also feature a new specific HGS pipe and silencer combination all working together to once again give significant performance gains in both horsepower and torque throughout the rev range.