BOYESEN - Power Resin Reeds Stock Item:POWER (RESIN) REED YZ250 THRU 77 [] More Air Flow: The dual-stage

More Air Flow: The dual-stage design allows you to replace your stock reed stop with a Rev-Plate which permits the reeds to open freely and function efficiently

this no-compromise race grade exhaust is incidentally road legal

Please check the thread fitment by hand

durable finish that looks fantastic

Frame plugs

BOYESEN - Power Resin Reeds Stock Item:POWER (RESIN) REED YZ250 THRU 77 [] More Air Flow: The dual-stageBoyesen's patented dual stage reed design incorporates a specially shaped top reed and a ported bottom reed. The top reed is lightweight and resilient for crisp throttle response at partial throttle or low RPMs. The stiffer, bottom reed is ported to provide maximum flow and horsepower at higher RPMs. More valves equals more power by creating: More Air Flow: The dual stage design allows you to replace your stock reed stop with a Rev Plate which permits