Serco sent us the following information on the all-new Twister Trottle Tube from Pro Taper:

Pro Taper’s Twister Throttle Tube is constructed with anodized aluminum. The sealed radial ball bearing bushing allows for a consistent and smooth throttle operation while a knurled grip mounting area ensures
a vice like grip bond.

The Pro Taper Twister Throttle Tube are compatible with all Pro Taper handlebars and Renthal 7/8 handlebars with the std bearing insert, RRP for this product is $79.95.

Check out www.serco.com.au for more information on the Pro Taper Twister Throttle Tube.