Yamaha BW80 Fork Seals

The Yamaha BW80 runs a 26 mm conventional front fork, oil seal 26x37x10.5.Every kit here is verified by the manufacturer to fit this exact bike. Fork seals can share a size and still not seat in a different fork, so we only list what is confirmed for your bike.

  • Fork tube26 mm
  • Oil seal size26x37x10.5
  • Fork typeConventional
KitYearsSeal sizeReplaces OEM
55-100 1986–1990 26x37x10.5 n/a

Verified fork kits we stock for your Yamaha BW80

Fork oil for your Yamaha BW80

A fork-oil change on the Yamaha BW80 uses 10wt fork oil. Factory fill: OE ATF/10W-30 engine oil (pre-fork-oil era); modern 10wt.