Processing customization is the use of silencer drum size 35 (mm), model 35mm, applicable models general modification article number SCL-2018070016-A-01 specifications honeycomb type back pressure bag, three-layer clapboard type back pressure bag suitable for KTM EXC XC XE suitable for KLX YZF CQR NC250 Applicable models CRF RMZ DRZ KTM YZF KXF CRF WR YZ Product name: Modified motorcycle exhaust pipe 35mm muffler porous sound reduction plug back pressure core mute catalyst silencer classification: A Exhaust pipe sound reduction plug honeycomb back pressure pack 38 /58MMB Exhaust pipe sound reduction plug three-layer clapboard type back pressure bag 38/58mm Product description: Refit the muffler catalyst sound reduction plug to reduce noise and purify exhaust gas standards