
Seal Kit by MOOSE OFFROAD HARD - PARTS (manufacturer part number: 811690MSE) — a complete set of sealing parts designed for 4-stroke off-road motorcycles (enduro / motocross). This kit includes everything essential for an engine and gearbox overhaul: paper gaskets, moulded rubber gaskets, oil seals, and sealing rings, as well as the valve stem seals necessary for reassembly.
Designed for mechanics and preparers who want to restore an engine block without breaking the bank, this kit makes it easier to get back on the road after a complete disassembly. It fits the common 4T engine configurations of motocross and enduro machines — notably compatible with several Yamaha 250 4T models (e.g. YZ/WR 250F 2016–2017).
Before purchasing, check the reference list and applications for your motorcycle to confirm compatibility. This kit is aimed at riders and technicians who want a complete set of reliable gaskets for a serious engine overhaul.