Star Yamaha Accessories Competition CNC-Ported Cylinder Heads, Silver - '99-'03 Road Star Models

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Part Number: SPD-4WM09-70-01

CNC-ported on 5-axis machine for precise repeatability. After porting, the heads receive a SERDI valve job to help ensure the best airflow.

Airflow is improved by 47.5% over stock when flowed with Competition Intake Manifold and 42mm HSR carburetor. Heads are built with stock valve train.

Important: SEE FITMENT DETAILS!

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This accessory fits:

- Yamaha 1600/1700 Road Star
- Yamaha 1600/1700 Road Star Silverado
- Yamaha 1700 Road Star Warrior

Important Fitment Details:
Fits '99~'03 Road Star models.

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