FMF MegaBomb Header YZ250F /YZ250FX 2019-2024 044449 1822-0475 Primary Chain Adjuster Kit Includes 18 mm O2 sensor

Includes 18 mm O2 sensor ports and 12 mm adapters

Race-tested materials give the bike a true racing feel

interwoven fiberglass fibers

hidden by the lower fairings

Notice:Closed Course Use Only

FMF MegaBomb Header YZ250F /YZ250FX 2019-2024 044449 1822-0475 Primary Chain Adjuster Kit Includes 18 mm O2 sensorThe ultimate power booster featuring exclusive Ti Metal construction Improved bottom to mid range power Produce the low end of a longer header and the top end of a short header Less susceptible to damage than a long header Runs well with sound restricting mufflers; effectively reduce sound output by as much as 1. 5 dB Make Model Year YAMAHA WR250F 20 21 YAMAHA YZ250F 19 24 YAMAHA YZ250FX 20 24