MOOSE RACING Rear Sprocket - 51 Tooth - Yamaha 1211-251-51-11 4" Slip-On Mufflers 2007-2011 Yamaha WR 450 F

2007-2011 Yamaha WR 450 F - Notes: 2007-2010Must use YZ250F/450F '06-'09 shrouds

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Intuitive and immediate reassembly in a few seconds

GB Racing’s revolutionary new tough

MOOSE RACING Rear Sprocket - 51 Tooth - Yamaha 1211-251-51-11 4" Slip-On Mufflers 2007-2011 Yamaha WR 450 FThe 7075 T651 aluminum we use for these sprockets receives an extra tempering which reduces distortion and provides optimal thickness vs. typically thinner 7075 T6 sprockets 100% machined, no stamping or grinding Optimal tooth thickness results in maximum tooth and chain contact