The Factory Fatty recalls the conical section of the tubes once used by Factory teams and thanks to its workmanship and quality material, it shares many of its characteristics.
- Widens and flattens the power curve, improving performance throughout the arc
- More power at low and mid-range and increased over-revs
- Lighter steel with 20 gauge thickness for the tube body
- 19 gauge steel for the manifold part
- Hand hammered welds for the smoothest possible gas transition
- YAMAHA YZ 125 05-21
- YAMAHA YZ 125 X 20-21