This insert will reduce the noise level on your PMB spark arrested 02-03 CRF 450/250, 01-05 YZ 250F, KXF/RMZ 250 to meet or beat the 96 db sound test. Simply inserts into the nozzle and is held in with a bolt from the back side.
These inserts only fit the original "snorkel" type endcaps. 96db silent inserts available for all of our spark arrestors.
