The K&N YA-1007 is a reusable, high-flow replacement element for the 2007 and 2008 Yamaha YZF-R1 1000cc. The manufacturer calls it a drop-in part for the factory airbox, with an application-specific base seal. Its media is stacked cotton gauze held in aluminum mesh, pleated for extra filtering area, and pre-oiled from the box. The main buying argument over a disposable paper element is reuse: you can clean and re-oil it instead of replacing it, and the manufacturer backs it with a lifetime limited warranty. The manufacturer says the design aims to raise horsepower and torque, but no gain figure is published, so think of it as an airflow and throttle-response upgrade. Riders searching for a 07 R1 high-flow air filter, a YZF-R1 2007-2008 reusable filter, or a K&N R1 airbox replacement will find the right fitment here.
Owners on user forums describe the swap as a seat-and-tank job. After removing the seat, side covers, and fuel tank, the airbox lid comes off with a ring of Phillips screws, and the element lifts out from the front. Forum posters list a 5mm hex, a Phillips driver, and a torque wrench as the tools, and one write-up cites about 5 ft-lbs for the 5mm fasteners. Confirm torque values in the factory service manual. Reinstall with the element's alignment tabs seated correctly. Forum accounts differ on how the airbox is opened, so check the service manual before you start.
The manufacturer states the YA-1007 is designed to fit the factory airbox as a direct replacement, so no airbox modification is needed.
The manufacturer lists fitment for the 2007 and 2008 Yamaha YZF-R1. Verify your bike's year and part number before ordering, since other R1 model years may use a different K&N part.
The manufacturer's specifications list a re-oil amount of 0.97 oz (29 ml) for this element.
This is a moderate-difficulty job, mostly because the fuel tank has to come off before the airbox is accessible. Plan on removing the seat, side covers, and fuel tank, disconnecting the hoses and electrical plugs, and then unscrewing the airbox lid. Use a 5mm hex, a Phillips screwdriver, and a torque wrench. Keep the fuel line work tidy, catch any residual fuel with a shop towel, and watch the alignment tabs on the element when you reinstall it. Forum posters also warn that the lower airbox has extra fasteners and a wiring harness, so check the service manual before you disassemble further.
