Some things just get better over time, like Kuryakyn's new Contoured ISO-Throttle Boss! Updated styling combined with a larger surface area & pad provide even more comfort than the original design while still easing hand & forearm fatigue. The addition of a throttle boss can make the difference between a quick trip & a cross country adventure. They're simple to install & are easily adjustable to suit your needs.
Throttle Boss K-6318: Gloss Black Contoured ISO-Throttle Boss. Note: Fits Right Side Only
Throttle Boss K-6319: Gloss Black ISO Throttle Boss
Throttle Boss K-6310: Chrome Contoured ISO-Throttle Boss for GL1800 Fits KÃ¼ryakyn ISO-Grips for use with GL1800 Heated Grips (P/N 6183)
Throttle Boss K-6309: Chrome Contoured ISO-Throttle Boss â€“ Left Side (ea)
Throttle Boss K-6299: Chrome Contoured ISO-Throttle Boss Fits KÃ¼ryakyn ISO-Grips, ISO-Flame, and Transformer Grips