Our ultra high strength crankcase main stud kit is essential equipment when upgrading internal components on your high boost Yamaha engine. Precision machined from premium grade 8740 alloy and heat treated to exacting...
Increase airflow and powerEasily installedMounts directly onto original flame arrestor caseBuilt to our specifications by K&NIncludes water repellent pre-filter cover.NOTE: We strongly recommend removal of catalytic...