Honda CRF 250X & 450X Airbox Modification

If you own a Honda CRF 250X or a Honda CRF450X you can complete an airbox modification and open up the airflow to your motor for significant power gains. Jay Clark walks you through the proper way to do this modification and also gives you some jetting recommendations for rejetting after you complete the airbox cutout. For a complete list of OEM and aftermarket parts and acessories visit our website www.rockymountainatv.com.