This rocker arm assembly is compatible with 300, Carnaby, X-Evo, MP3, X7, X8, and X9 scooter models equipped with 125cc, 200cc, 250cc, and 300cc 4-valve engines.It replaces OEM part numbers B0184835 and B0184845. Fitment includes: 125 (2011–2014) 125 Sport (2008–2010) 125 (2009–2010) Carnaby 125 (2007–2010) MP3 125 (2006–2008, 2009–2013) MP3 125 ie (2008–2009) X-Evo 125 (2007–2015) X7 125 (2007–2008) X8 125 (2004–2007) X8 125 Street (2004–2007) X9 125 (2000–2003) X9 125 SL (2000–2003) Carnaby 200 (2007–2010) 250 (2007–2009) Carnaby 250 ie (2008–2009) MP3 250 (2006–2008, 2008–2009) MP3 250 LT (2008–2009) X-Evo 250 (2007–2012) X8 250 IE (2007–2008) 300 ie (2010–2017) 300 S (2014–2017) MP3 300 Hybrid 4T 4V (2010–2013)