All Balls extended fuel mixture screw for Yamaha WRF 400 98-00

Kit includes all necessary parts to replace OEM style fuel mixture screw with an extended screw for easy tuning.
Kit includes extended mixture screw o-ring, spring, and washer.

Each All Balls kit contains all the necessary components (bearings, seals, pins, spacers, collars, thrust washers and thrust bearings) needed to finish the job without ordering a laundry list of parts. Better yet, all All Balls kits meet or exceed the quality of the OEM parts they replace and at a fraction of the cost.