POLISPORT Body Kit - Complete - '09 OEM Green/Black - KX 250F 90206 Lo-Boy Shotgun Exhaust System There are two reasons why

There are two reasons why you want to remove the air injection system from your bike:

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Thermometer

or any other solvents or spray-on cleaners

I've seen common fixes to this by continuing to use softer metals and making the holes bigger which leads to failure in other places

POLISPORT Body Kit - Complete - '09 OEM Green/Black - KX 250F 90206 Lo-Boy Shotgun Exhaust System There are two reasons whyIndividual pieces of Replacement Plastic also available Less prone to scratches DGP Durable Gloss Polypropylene, highest levels a superior gloss finish and color brightness Glossy and flexible Exact replica of stock OEM plastic components but stronger Inexpensive alternative to OEM replacement parts Injection molded, quality plastic components with a perfect OEM fit