Athena Main Jet Precision fuel delivery for your carburetor — the Athena Main Jet is engineered to optimize air–fuel mixture, improve throttle response, and unlock smoother power across the rev range. Perfect fit: Manufactured to OEM specifications for consistent, repeatable performance and easy installation. High-quality materials: Corrosion-resistant brass construction for long life and reliable fuel flow. Performance gains: Refine fueling to reduce hesitation, improve acceleration, and support tuning changes like different air filters or exhausts. Wide compatibility: Available in multiple sizes to match a variety of carburetors and engine setups. Easy to use: Simple swap-in part to fine-tune mixture without special tools. Choose the Athena Main Jet to achieve accurate metering and consistent performance whether you’re restoring, repairing, or tuning. For best results, select the correct jet size for your carburetor and consult a tuning chart or technician.