BWS125 Variator Pulley Set

Engineered Airflow Balance for Stable CVT Operation

This Performance Pulley Set is designed for YAMAHA BWS 125 models. Built with precise machining tolerances and balanced component weight, it supports smooth CVT movement and consistent transmission response.

Available in Carburetor (Carb) Version and Fuel Injection (FI) Version, the difference lies in the pulley fan center design to ensure proper compatibility with the original starting system layout.

🔹 Precision Machined Pulley Face — OD 115mm / ID 21mm for accurate fitment and stable belt travel
🔹 Matched Pulley Fan Design — Optimized airflow alignment for heat dissipation within the CVT case
🔹 Version-Specific Center Structure — Carb version features recessed center for kick-start gear installation; FI version uses flat center design
🔹 Balanced Total Weight (660g) — Supports consistent transmission engagement characteristics
🔹 Complete Core Components — Includes pulley face, pulley fan, and center boss for direct system replacement

✔ Product Specifications

• Type: Performance Pulley Set

• Size / Dimensions:

  • Pulley OD 115mm / ID 21mm

  • Pulley Fan OD 120mm

• Weight: 660g (Total Kit Weight)

• Fitment: YAMAHA BWS 125 (Carburetor & FI models)

• Focus: CVT stability, airflow management, precise belt guidance

• Package Includes:

  • Pulley ×1

  • Aluminum Pulley Fan ×1

  • Center Boss ×1

🔧 Installation Notes

• Please confirm Carburetor or FI version before purchase

• Ensure belt condition is inspected during installation

• Verify smooth rotation after assembly before engine start

• Professional installation recommended if unsure

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