LOSA9116 13T regular..
LOSA9126 13T high endurance..

has anyone found a drastic improvement between the 2 bells as far as it actually wearing longer? i can't see the inside of the bell lasting longer, it cakes up with aluminum shoe material anyways.. the only thing i can think of is the teeth that ride the spur lasting longer.

my HD's last about 1.5-2 gallons before marking the teeth up real bad and making a ton of noise. i usually clean the bell every 1/2 gallon. a quick dremel job make it easy. just wondering if the few bucks is actually worth it.