PROX Engine Valve. 1 x PROX Engine Valve (part number 28.1227-2). HONDA CRF 150 R(2007-2023). HONDA CRF 150 R Expert(2018). HONDA CRF 150 RB(2007-2017). ☎ Expert Help. Established 2002 — one of the UK's largest authorised Honda, Yamaha, Can-Am and Polaris ATV & UTV dealers.
