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I'm not sure about the differance between the TBS & Thruxton needles but after putting the Thruxton needles in my 03 America the throttle response from 1/4 to full is much smoother and the speedo needle climbs over those numbers much faster than before.



Someone said that the Thrux and TBS differ in length but are the same taper. So in other words if you cut off enough length so they're the same, they'd be identical needles. However, i don't know of he measured them with a caliper or was just eyeballing them.

By the way, anyone have a pair of thruxton needles they wanna trade for a pair of TBS? PM or email me if ya do..