These oil fill plugs are a perfect upgrade to your racing engine. When changing your engine oil happens more frequently, as with racing engines, a lot of the stock plastic oil fill plugs get worn out, strip the threads, or even break. Throw those plastic plugs away and upgrade to these billet plugs today! These plugs fit multiple Suzuki engines, including the popular 06-Up Suzuki GSX-R600 and GSX-R750 engines, and include a new o-ring.