And YES, even the stock XR throttle is a "quarter turn" throttle. The advantage in the Quick turn throttle is that
the ramp is steeper at the beginning of the throttle twist, causing slightly quicker acceleration in the opening twist of
the throttle. But, the throttle tube does not shorten the throttle turn significantly to Wide Open Throttle. It
is a nice mod though for cruising and improving partial throttle acceleration.