This version of our Internal Throttle Assembly offers a smaller diameter twist-sleeve (1.025") that has been developed for use with the popular after-market billet grips that typically replace the stock throttle tube instead of fitting over it. These billet grips typically have the cable attachment points at the end of the right grip. When using a billet grip (as opposed to a rubber grip) it will be necessary to use a set screw or some other means to anchor the grip to the internal throttle twist-sleeve. The Internal Throttle Assembly is generally supplied for use with stock 1" handlebar tubing, but other handlebar insert diameters can be requested. Note that all aftermarket 'large diameter' bars have 1" tubing end sections - the diameter of the 'main' part of the bar is irrelevant to your throttle choice.
Made in the USA and beautifully engineered with a smooth, roller-bearing action, this kit is the best available.
NOTE: a throttle cable is not included with the internal throttle. When converting to an internal throttle you will need a throttle cable with the adjuster positioned either at the carb/throttle body or positioned mid-cable (the stock cable has the adjuster at the handlebar end). Most internal throttle customers also order our cable, part number TCK.
NOTE: for decades now all bikes (except TBW of course) have been manufactured with dual throttle cables, but the 'return' cable is simply a government requirement, and it is not necessary for the throttle to function perfectly, as the return spring on the carb or throttle body will snap the throttle shut. SO, just because your bike has two throttle cables currently does NOT mean you can't run an internal throttle. Almost every one we've ever sold (and we've been selling them over 25 years) ends up on a 'dual cable' bike.