KOSO NORTH AMERICA Wideband Air/Fuel Ratio Meter BA004068 Regent-X Solid Helmet 2020-2023 Yamaha YZ 125 X

2020-2023 Yamaha YZ 125 X - - 2016-2023 Yamaha YZ 250 X - - 2016-2023 Yamaha YZ 450 FX - - 2015-2023 Yamaha YZ 250 - - 2015-2023 Yamaha YZ 250 FX - - 2015-2023 Yamaha YZ 125 - - 2010-2023 Yamaha YZ 250 F - - 2010-2022 Yamaha YZ 450 F

Sounds reducing insert included in kit (USDF/USDA approved spark arrester

17" diameter without bezel

oversized K&N high flow air filter equals longer life

Feature advanced acoustical tuning technologies for a deep rumbling sound Come with 3" cores encased in proprietary Cobra sound tuning materials with specific acoustical dampening and thermal insulation properties The frequency and location of the perforation patterns in the high-flo cores creates significant sound scattering in the mid frequencies

KOSO NORTH AMERICA Wideband Air/Fuel Ratio Meter BA004068 Regent-X Solid Helmet 2020-2023 Yamaha YZ 125 XHighly visible, backlit digital display Allows more precise tuning Programmable warning alerts rider of too lean or too rich ratio Displays ratio between 10. 0 24. 0 Includes Bosch O sensor, sensor bung, sensor bung cap and gauge bracket Recommended for use with 4 stroke engines; for 2 stroke applications, use O adapter PART #1861 0524 Requires a DC 12 V battery; will not function with AC DC converter