HIGH PERFORMANCE, 4 UP w/CLUTCH, ANY GEAR START, 150 CC 4 STROKE 4 SPEED RACING ENGINE, a bolt-in replacement/ upgrade for the XR50/ CRF50 Horsepower is More than Four TIMES that of stock CRF 50!!
Type:	Single cylinder, 4-stroke, horizontal, Oil cooled
Bore x Stroke:	60mm x 53mm
Displacement:	149.8ml
Compression Ratio:	10.0:1
Max HP:	10KW / 9500 r/min
Rated Power:	9.2KW / 9000 r/min
Max Torque:	11.2N.m / 7500 r/min
Minimum Fuel Consumption:	<367g / KW.h
Fuel:	90＃ up GB484-89
Lubrication Brand:	API SAE 15W / 40-SF
Gear Ratios:	1st: 3.272(11/36), 2nd:1.937(16/31), 3rd: 1.350(20/27), 4th: 1.043(23/24)
Spark Plug:	A7TC
Plug Gap:	0.6mm-0.7mm
Ignition System:	CDI
Clutch:	Manual
Lubrication:	Pressure / Splash
Oil Capacity:	950ml
Starter:	Kick Start any Gear Start
Dimension:	435X285X235mm
Weight:	25+/-1Kg
This complete kit include : 150 cc motor Kick start Shift lever Intake Manifold Seal gasket and necessary nuts and bolts. This motor is the Biggest that is being currently offered in the aftermarket industry! Yin Xiang is one of the top 5 motor manufactures in China, Quality is absolutely guaranteed! 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 10 KW/9500r/min, this motor performs 4 times better than a standard CRF50 engine It should fit most of the following models: Note: This is not a guarantee, if you are not sure, please check with your mechanic or local dealers. HONDA CRF50 / CRF70 / XR50 / XR70 / Z50 / Z50R / CT70 Mini Trail / Z50 / Mini trail Monkey / XL70 ST70 / QA50 / QR50 / CL70 / SL70 / 70 Passport / ST 90K2 / ST 90K1 / CS 90 / SL 90 / ZB 50 / This Motor shipped in Continental USA, lower 48 only Shipping by FedEx ground only ( Insurance Included), sorry we do not use USPS priority mail!