Trokón is a colloquial and augmented form of "troca" (truck), meaning a "big truck" or a "badass truck." It's a word that immediately sets the tone for the song's theme of cruising in a powerful vehicle.
This word is interesting because it's not standard Spanish; it's a regionalism and a slang term common in Mexican-American culture and narcocorridos. Its use here is vivid and paints a picture of a formidable vehicle, making it memorable and unique to this type of song.
Get ready to ride shotgun in "Un Trokón"! This song is all about cruising in a powerful truck, a "troconón bien perrón" [a really bad-ass big truck], tearing it up on dirt roads, or "pura terracería" [pure dirt roads]. The music is blasting, "bien arriba el musicón" [the music way up high], setting the perfect vibe for celebrating and showing off.
Lefty Sm is calling up his crew, who are always down for a good time, saying "no me fallan, pues nunca dicen que no" [they don't fail me, because they never say no]. He's on his way, "vengo en chinga" [I'm coming in a hurry], ready to light up some good weed and get high, creating a "buen polvaderón" [good dust cloud] and a "humaderón" [big smoke cloud]. He's feeling untouchable, saying "falsedades me la pelan" [falsehoods can kiss my ass], with a strong style he earned through hard work. Enigma Norteño joins in, describing their own powerful truck, cruising through Sonora, San Luis, and Sinaloa with their loyal friends, ready to keep the party going.