Yamaha BS25A Carburetor (Euro 3 Version) for 125cc-150cc 4-Stroke Motorcycle

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Material	Aluminum Alloy
Condition	New
Application	STANDARD CRANKSHAFT
Jetsize	Standard 100 Main Jet
Choketype	Manual Choke
Caliber Of Bore	30mm (125-250cc)
Mountingstyle	Clamp Mount
Size	Standard
Form Of Packaging	Color bag + color box/carton
Color	As shown
Market	ALL OF WORLD
Compatibility	Universal Fit for Most Motorcycles
Rubber Sleeve Material	Oil-resistant nitrile rubber
Throttletype	Cable Operated
Dimensions	66×78×110mm

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Product Details
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Product Specification


Material	Aluminum Alloy	Condition	New
Application	STANDARD CRANKSHAFT	Jetsize	Standard 100 Main Jet
Choketype	Manual Choke	Caliber Of Bore	30mm (125-250cc)
Mountingstyle	Clamp Mount	Size	Standard
Form Of Packaging	Color bag + color box/carton	Color	As shown
Market	ALL OF WORLD	Compatibility	Universal Fit for Most Motorcycles
Rubber Sleeve Material	Oil-resistant nitrile rubber	Throttletype	Cable Operated
Dimensions	66×78×110mm

Product Overview

The Yamaha BS25A Euro 3 Carburetor is an OEM-spec replacement carburetor designed for Yamaha and compatible 125cc–150cc 4-stroke motorcycles. Built to meet Euro 3 emission standards, this carburetor delivers precise fuel-air mixing, improving throttle response, idle stability, and fuel efficiency while ensuring compliance with stricter environmental regulations.

Constructed with durable die-cast aluminum alloy and corrosion-resistant components, it is engineered for long-lasting performance in daily commuting and general use. Factory-calibrated for direct bolt-on installation, it fits most compatible Yamaha engines without modifications, making it ideal for repairs, restorations, and bulk wholesale orders.

Key Features

BS25A specification with 25mm venturi optimized for 125–150cc engines
Euro 3 compliant design for reliable emissions control
OEM-style construction for perfect fit on Yamaha motorcycles
Durable die-cast aluminum body for long service life
Pre-calibrated for direct bolt-on installation (no modifications needed)

Improves engine idle stability, throttle response, and fuel efficiency

Specification	Details
Model Number	Yamaha BS25A (Euro 3 Version)
Product Type	Emission-Compliant OEM Carburetor
Venturi Inner Diameter	25mm
Control System	Electronic/Automatic Choke
Material	Die-Cast Aluminum Alloy + High-Quality Rubber/Plastic Components
Compatible Engines	4-Stroke Single Cylinder 125cc–150cc (Yamaha and compatible models)
Compatible Vehicles	Yamaha 125cc–150cc 4-Stroke Street Motorcycles (Euro 3 Spec)
Fuel Type	Unleaded Gasoline (91+ Octane Recommended)
Installation Type	Direct Bolt-On Replacement (OEM-Compatible, No Modifications Needed)
Net Weight	~0.49 kg (1.08 lbs)
Package Contents	1 × Yamaha BS25A Euro 3 Carburetor + Hoses
Warranty	12 Months Limited Warranty (Covers Manufacturing Defects)

Company Details

Bronze Gleitlager

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and

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from Quality China Factory

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Business Type:

Manufacturer,Seller 


Year Established:

2015 


Total Annual:

1000000-5000000


Employee Number:

50~100 


Ecer Certification：

Verified Supplier 

Guangzhou Huanhe New Energy Co., Ltd. was established in May, 2015. We are a comprehensive enterprise dedicated to the integrated R&D, production, manufacturing, and sales of two-wheeled motorcycles, three-wheeled motorcycles, and lithium batteries. Our mission is to provide high-quality carbure... Guangzhou Huanhe New Energy Co., Ltd. was established in May, 2015. We are a comprehensive enterprise dedicated to the integrated R&D, production, manufacturing, and sales of two-wheeled motorcycles, three-wheeled motorcycles, and lithium batteries. Our mission is to provide high-quality carbure...

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