I checked the part numbers first ..
TRX 500FE /FM ..# 52100-HP0-A00
TRX 500FA /FG ..# 52100-HN2-000
Next I measured (as best I could)
Both bikes the width at the pivot (swingarm bearings) was approx. 10.5"
and the length from the swingarm tube to the brake mount bolt was 14" on both bikes ..
The bikes were a new TRX500FE and new & used Rubicon ..
TRX 500FE /FM ..# 52100-HP0-A00
TRX 500FA /FG ..# 52100-HN2-000
Next I measured (as best I could)
Both bikes the width at the pivot (swingarm bearings) was approx. 10.5"
and the length from the swingarm tube to the brake mount bolt was 14" on both bikes ..
The bikes were a new TRX500FE and new & used Rubicon ..