raven... for rxz meter 180km super 4 is only 130 or 140km only... tested n proven...haha... alot or 2b rxz rider will not happy by telling that...but u can try it ur selflah... if rxz meter same with super 4 like rxz 180km n super 4 same 180km i go buy rxz oredy...haha... i myself gt ride super 4 n rxz before... so no offence guyz... hahaha