The smaller diameter twist-sleeve has been developed for use with the popular after-market billet grips that typically replace the stock throttle sleeve instead of working with it. The Internal Throttle Assembly is generally supplied for use with stock 1” handlebar tubing, but other handlebar insert diameters can be requested. Made in the USA and beautifully engineered with a smooth, roller-bearing action, this kit is the best available. There is simply no excuse for not using one! Exile Cycles’ Internal Throttle Assembly sells for $199. A left-side version is also available as part of Exile’s clever Twist Clutch Assembly. Exile Cycles ships worldwide every day and accepts MC, Visa and PayPal.