MOOSE RACING Dual Sprocket - Orange - 49 Tooth 1210-897-49-14X Fuel & Air This breakthrough system replaces your

This breakthrough system replaces your inadequate stock O2 sensor with a proprietary FTECU lambda controller and the latest generation Bosch LSU 4

The inter core tube is made of stainless that slips over the entrance and into the exit cap that is a stamped Titanium

Machined aluminum end caps

1998-1999 Yamaha WR 400 F - - 1998-1999 Yamaha YZ 400 F - - 1992-1999 Yamaha YZ 125 - - 1992-1999 Yamaha YZ 250

A perfect compliment to your Yamaha sport bike

MOOSE RACING Dual Sprocket - Orange - 49 Tooth 1210-897-49-14X Fuel & Air This breakthrough system replaces yourDesigned to outlast standard aluminum rear sprockets and is much lighter than steel rear sprockets Inner ring is made from 7075 T6 aluminum and the outer ring is made from heavy duty steel Self cleaning mud grooves between each tooth to prevent dirt build up