The # HSE7K-T1 brake kit you referenced is designed to work with 7K axles, regardless of the suspension used. It'll work perfectly with your axles/suspension. The rotors included are compatible with a 25580 inner/14125A outer wheel bearing and a # GS-2250DL grease seal. The kit includes everything you need to switch your trailer over to disc brakes for improved performance and greater stopping power. view full answer...