HIGH PERFORMANCE, 4 UP, ANY GEAR START, 140CC 4 STROKE 4 SPEED COMPLETE RACING ENGINE, a bolt-in replacement/ upgrade for the XR50/ CRF50
Horsepower is More than FOUR TIMES of stock CRF 50!! This motor is the Biggest that is being currently offered in the aftermarket industry!
LIFAN offers with this engine of the newest generation all tuning- and racing-fans best quality and highest performance state-of-the-art!
The engine comes with a high-quality cylinder head made from aluminum, a reinforced kick starter axle and extra large valves and canals!
Furthermore it comes with a high-quality 4-disc clutch!
With 7.4 kW/12 hp by 7500 rpm the engine reaches more than the triple performance of a standard CRF50 engine. Best of all, it comes with 24MM MIKUNI racing carburetor. and alloy performance head!!
Single cylinder, 4-stroke, 2 valves, OHC racing head, oil cooled, 140cc
Bore x Stroke: 55mm x 59.5mm
Compression Ratio: 9.47:1
Carburettor: 24mm MIKUNI racing carburetor
Ignition: CDI, 12 volt, permanent magnetic stator
Maximum Power: 8.5 Kw DIN @ 9,500 rpm
Rated Power: 6.5 Kw @ 7,500 rpm
Torque: at least 9.5 Nm @ 5,500 rpm
Gears: 4-speed, manual clutch, START IN ANY GEAR! 4 up!!
Gear Ratios: 1st 2.833:1, 2nd 1.706:1, 3rd 1.238:1, 4th 0.958:1
Final Drive: 14 tooth #420 front sprocket included (we have other sprockets on sale too!!)
Lubrication: 1.1 liters, 5W/40 4-stroke motorcycle oil, pressure and splash
Buyer will receive Lifan 140CC Motor, 24MM MIKUNICarburetor, Intake manifold, intake gaskets, Shifter, Kick Starter, Wiring Harness, CDI, Spark Plug , Ignition Coil, AND CNC Billet oil cooler. This package has almost everything, excepts a bike to bolt on.
This Motor should fit the following models:
Note: This is not a guarantee, if you are unsure, please check with your local dealer.
HONDA CRF50 / CRF70 / XR50 / XR70 / Z50 / Z50R / CT70 Mini Trail / Z50 / Minitrail Monkey / XL70 ST70 / QA50 / QR50 / CL70 / SL70 / 70 Passport / ST 90K2 / ST 90K1 / CS 90 / SL 90 / ZB 50 /
Due to the fact that this is a racing engine, no warranty is expressed or implied. We have not had a single problem with the engine.
(GENUINE LIFAN NOT KNOCKOFF!!)