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

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Product Description

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)

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Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Guangzhou Huanhe New Energy Co., LTD
Location No. 28, Zhongyue Middle Street, Michong, Jinshazhou, Baiyun District, Guangzhou City
Contact Person Wang

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