The K&N YA-1098 is a reusable high-flow replacement element for the factory airbox on the 1998 through 2001 Yamaha YZF-R1. Instead of a disposable paper cartridge, it uses layers of cotton gauze over a pleated media pack and arrives pre-oiled. The manufacturer says this design can help improve horsepower and acceleration without typically requiring fuel-management modifications, and it covers the filter with a lifetime limited warranty. Because the element is washed and re-oiled rather than replaced, it can end up costing less than repeatedly buying paper filters, which helps justify the premium over a stock or budget replacement.
Riders searching for a 1998-2001 YZF-R1 K&N air filter, a YA-1098 cotton gauze intake element, or a washable R1 airbox upgrade will find a part engineered for this specific application rather than a universal shape. Its 113 mm height and roughly 0.8 lb weight suit a direct swap, and the manufacturer describes it as custom engineered for this model. Installation is a drop-in job, but the seal between the filter and the airbox is critical, so the fit should be checked carefully at every service.
The manufacturer lists the YA-1098 for the Yamaha YZF-R1 from 1998 through 2001, and it is custom engineered for those models. Confirm your model year against the manufacturer's fitment listing before ordering.
Yes. The manufacturer describes this filter as washable, reusable, and pre-oiled, and it is designed to be cleaned and re-oiled rather than replaced at each service. The manufacturer's recharge kit is the recommended way to clean and re-oil it.
Installation involves removing the airbox lid, pulling out the stock paper element, and seating the K&N in the airbox base. The manufacturer's install sheets for its other filters stress clean sealing surfaces, a bead of sealing grease around the filter's perimeter, and correct orientation so the filter seals fully; an unsealed filter can let unfiltered air bypass it. No YA-1098-specific install sheet or tool list was confirmed in our research, so check the manufacturer's instructions before starting.
