Yoshimura INS-14-K AMA-Legal Low-Volume Insert for RS-4 - 1.500in. Diameter

Spark arrestor inserts are U.S.F.S.-legal and include noise-reduction insert. Low-volume inserts are for non-spark-arrestor equipped bikes; reduce noise levels for AMA or FIM competition sound requirements. Fits Yoshimura exhaust system or slip-on noted in description. Sold each.

Vehicle Fitment:

2010-2013 Honda CRF250R
2009-2012 Honda CRF450R
2022-2023 Husqvarna Norden 901
2012-2015 KTM 250 SX-F
2012-2015 KTM 350 EXC-F
2011-2012 KTM 350 SX-F
2019-2020 KTM 790 Adventure
2021-2023 KTM 890 Adventure
2010-2014 Suzuki RM-Z250
2008-2014 Suzuki RM-Z450
2010 Suzuki RMX450Z
2007-2013 Yamaha YZ250F
2010-2014 Yamaha YZ450F