RFX Race Series Kill Button (OEM Replica) Honda CR80/85 86-07 CRF150 07-14 CR125/250/500 86-07 CRF250 04-09 CRFX250 04-14 CRF450 02-08 CRFX450 05-14. RFX Race Series kill buttons are an exact OEM replacement part. Complete with the same couplings, fasteners, connectors and exact cable lengths as the genuine part. Available for a wide variety of bikes. OEM replacement. Accepts all original connectors. OEM cable length.