125cc 4Stroke Engine, 4-Speed Off-Road Motorcycle Engine Kit

ApplicationIt fits for CRF50 / CRF70 / XR50 / XR70 / Z50 / Z50R / CT70 Mini Trail / Z50 / Minitrail monkey / XL70 ST70 / QA50 / QR50 / CL70 / SL70 / 70 Pass / ST 90K2 / ST 90K1 / CS 90 / SL 90 / ZB 50.SpecificationsColor: Black, SilverAssembly Required: YesEngine Type: 4-Stroke, Single CylinderCooling System: Air CoolingEngine Displacement: 125ccTransmission: 4-speed, Manual Clutch 1-N-2-3-4Clutch: Wet Multi-disc ClutchLubricant: SAE 15W/40-SE, Four-stroke Gasoline Engine OilCompression Ratio: 9.0:1Bore*Stroke: 52.4*55.5 mm/2.06*2.18inMaximum Power: 6.5KW/7500 rpm ± 375 rpmRated Power: 5.6KW/7500 rpm ± 375 rpmMax. Torque: 8.0 Nm/5000 rpm ± 250 rpmIdle Speed: 1500 rpm ± 100 rpmMin. Fuel Consumption: ≤367g/kw.hIgnition System: CDIStarting Mode: Kick StarterSpark Plug: A7TCCarburetor Type: PZ22Primary Reduction Ratio: 3.722Lubricant Capacity: 900ml/30.43ozItem Weight: 19.1kg/42.1lbsProduct Size: 44*29*22cm/17.32*11.4*8.66inGross Weight: 21.5kg/47.4lbsPackage Size: 48*37*35cm/19*14.6*14inPackage Included1* 4-stroke EngineAll Accessories for InstallationNotes1.The installation manual is not included. Professional installation is highly recommended. Please note that the applicable models are only for reference.2.Please carefully read the product label and pay attention to the safety precautions inside. Before use, please carefully check the cable, power supply, etc., and take proper protective measures to avoid potential safety hazards.3.Please allow the slight color difference caused by the shooting light and 1-3cm error due to manual measurement, and make sure you do not mind before you order.

Pit Bike Engine, Compatible with Honda CRF50, CRF70, XR50, XR70, and Z50, Includes an A7TC Spark Plug and a PZ16J Carburetor

【Rugged Industrial Grade Material】: This 125cc motor adopts high-strength metal construction with precision machining craft, featuring solid wear-resistant and heat-resistant performance. The sturdy internal structure ensures stable operation under high-load conditions. This durable small engine and mini engine delivers excellent durability, serving as a reliable dirt bike engine for long-term off-road use.

【Professional Engine Specifications】: This 125cc engine features 4-stroke single cylinder air-cooled design with standard 9.0:1 compression ratio and PZ22 carburetor. It supports 4-speed manual clutch transmission, stable power output and matched idle speed. With reasonable bore stroke parameters and low fuel consumption, this pit bike engine meets standard mini motor power demands.

【Stable & Efficient Operation Performance】: This dirt bike engine adopts mature CDI ignition system and wet multi-disc clutch structure for sensitive start and smooth gear shifting. The air cooling design effectively dissipates heat during continuous operation, reducing overheating risks. This 125cc motor offers steady torque output and low fuel consumption for daily mini bike riding and modification.

【Complete Accessories & Usage Notes】: This pit bike engine package contains the 4-stroke 125cc engine and full installation accessories. Professional installation is highly recommended as the manual is not included. Please fully inspect circuit and power conditions before use. Slight color difference and minor manual measurement errors may exist.

【Wide Compatibility & Application】: This versatile mini engine is compatible with multiple mini bike models including CRF50, CRF70, XR50, Z50 and CT70 series. It works perfectly for motorcycle replacement and modification, acting as a practical 125cc engine and small engine for daily off-road riding and equipment upgrading.