NOTE: For matching left mirror use part number 39-1809
All include 10mm RH threaded adapters for mounting to most Japanese bikes, as well as 5/16 in. -18 bolts for mounting to Harley-Davidson. Most Japanese motorcycle with thread-in mirrors use 10mm RH threads. Many Yamahas use 10mm LH threads for the right-hand mirror.
Length (overall): 6 7/8 in.
Length (glass only): 4 7/8 in.
Height (glass only): 2 in.
Stem length: 7 in.
Stem offset: 3 1/4 in.
Part 391810 fits the following machines