Yamaha YSR50 Fork Seals

The Yamaha YSR50 runs a 27 mm conventional front fork, oil seal 27x39x10.5.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 tube27 mm
  • Oil seal size27x39x10.5
  • Fork typeConventional
KitYearsSeal sizeReplaces OEM
55-101 1987–1992 27x39x10.5 n/a

Verified fork kits we stock for your Yamaha YSR50

Fork oil for your Yamaha YSR50

A fork-oil change on the Yamaha YSR50 uses 10wt fork oil. Factory fill: OE ATF/10W-30 engine oil (pre-fork-oil era); modern 10wt.