with TORs the carbs should be rejetted. Triumph says it's not required and doesn not ship jets with the pipes. (at least they didn't) But as was stated above our bikes come lean from the factory so its a no brainer that less restrictive exhaust = leaner engine. Lean from the factory + less restrictive pipes = even leaner so rejet should be done. If you have any doubt put it on a dyno.

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