1" Bore Reduction Insert 1-1/8" Diameter WM301-1.125


Our new Jimmy Mars designed traction tuning carb spacer system allows you to have the maximum power and also the option to reduce power by changing the insert when the track gets slick. 1" tall bore reduction 1-1/8" diameter with 7% reduction in power.

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  • Model: WM301-1.125.
  • Shipping Weight: 3.5lbs

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