The K&N YA-1199 is a High-Flow powersports replacement element for the 1999-2009 Yamaha XVS1100 V-Star. It uses pleated media for a large filtration area, plus multiple layers of woven cotton gauze, and the manufacturer says it is washable, reusable, and pre-oiled. Compared with the stock paper element, you can clean and re-oil it instead of replacing it at each service. The manufacturer says it is designed to deliver high airflow that can help improve horsepower, acceleration, and engine response without typically requiring fuel-management modifications. Owners on user forums are divided on how much seat-of-the-pants difference it makes on a stock airbox, so treat it as a durable, reusable upgrade rather than a power kit.
This filter is a drop-in fit for the V-Star 1100 platform, and the manufacturer says it has application-specific seamless sealing beads and custom seals. Owners on user forums note that the stock airbox remains the main restriction, so a pod or airbox modification is usually the next step if you want larger gains. The install is straightforward and the manufacturer rates it an easy DIY job. Search terms this filter matches include K&N YA-1199 V-Star 1100 air filter, 1999-2009 XVS1100 reusable cotton gauze filter, V-Star 1100 K&N airbox fitment, and V-Star 1100 jetting after air filter change.
The manufacturer says the filter is designed to work without typically requiring fuel-management modifications. Owners on user forums report that changes elsewhere in the intake or exhaust are more likely to require carburetor adjustment, so check your carburetor setup after any other modifications.
Owners on user forums say the V-Star's oil reservoir is often overfilled, which can cause oil to blow back into the airbox and onto the filter. Checking the filter at each oil change and wiping off excess oil is the common practice. If oil has soaked into the element itself, replace it.
The manufacturer lists a re-oiling amount of 0.38 oz (11 ml). Owners on user forums advise against soaking the element and warn that too little oil lets fine particulate through, so apply oil evenly and sparingly after cleaning.
The manufacturer rates this filter as an easy DIY job that typically takes about 5 to 10 minutes with a screwdriver. Remove the airbox lid, pull the stock element, clean the sealing surfaces of dirt and debris, and seat the K&N element fully so it sits flush. K&N's install sheets for its other filters stress that the filter must be fully seated and sealed each time it is serviced, or it may not seal properly and could allow unfiltered air into the engine. Reinstall the lid and check that the element is seated and the lid closes without forcing it.
