Bonneville America Forums Forums Technical Forums Performance Mods TBS vs Thruxton vs Standard needles

Michael888, This is the question I've been wondering all along too.Midrange Throttle! I've done a little digging and this is what I have so far....TBS needles are tapered but not evenly - thruxton was found to have a markedly tapered needle with much improved midrange flexibility , with no apparent loss of top end power.( compared to a standard Bonneville needle it is not only more tapered but slightly longer.) I've also recieved a post about dyno-jet needles which have a more agressive taper w/ 6 height settings for tuning.That's all I have so far in the real world midrange.