WSM Top End Kit - 1mm - Yamaha 54-540-14 Carb Vent Hose Kit Installing our stainless lines gives

Installing our stainless lines gives a large performance increase by significantly reducing expansion under pressure

Designed to work with your stock-length axles

- Standard forestry approved quiet core / spark arrestor is included

In order to use a Dynojet Speed Shifter you will need to use the Dynojet Ignition Module along with the Power Commander PC3USB

Grips follow the original Petty design

WSM Top End Kit - 1mm - Yamaha 54-540-14 Carb Vent Hose Kit Installing our stainless lines givesTop quality piston kit Includes pistons, rings, pins, clips, needle bearings, head and base gaskets and intake and exhaust gaskets and oil filter for 4 stroke models