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Discussion Starter · #1 ·
Anyone know it? i'd like to know how much i'm increasing it by


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Discussion Starter · #3 ·
wait. that doesn't make sence. 2 inches is 50 mm. Modified throttles are bored out to 51mm. Surely they don't bore out 1 mm?


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stock it is 2 inches tapperes to one inch in the middle then back out to two inches the upgrade you are thinking of is a straight two inch


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