Seller notes

Simple but effective way to shift the torque curve to favor the low- to mid-range band of the rev rangeInsert spacer between cylinder and reed valveCNC machined aluminumKit includes 2 gaskets and stainless allen boltsIf your air boot has shrunk with age, this is a great way to get everthing to fit snug again.6mm thick plateProud sponsor of the AMA D14 Vintage Motocross Series & AHRMA Great Lakes Regional Series....

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