so do you have a twist throttle? a thumb throttle from a 400ex or the stock blaster thumb throttle? The 400ex cable adjuster is different than the yamaha cable and it won't ever work with the Yamaha Thumb Throttle . If you are using the standard Yamaha Thumb Throttle , but you have deleted the TORS , you simply need a Motion Pro TORS delete Thumb Throttle Cable . If you have the 400ex thumb throttle then the cable would work for you just fine . and depending on the brand of twist throttle ( probably a motion pro , and twist throttles on a quad is just asking for bodily damage ) they will have their own cable that is just a bit longer than the thumb version.