The Factory Metal Works black rippled velocity stack for amal 900 series carbs

Amal 900 series rippled velocity stack. Fits Triumph,BSA, and Norton vintage amal carbs.CNC Machined in USA from 6061 aluminum Comes in Bright black anodized finish. Length- 2.5" Outer diameter (intake side)- 3" Inner diameter (carb side)- 2.75".Made in the usa at tfmw in stock ready to ship sold each. if ordering a large amount of items we offer shipping discounts please call or email

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