Motion Pro Push/Pull Throttle Housing

The throttle cam twist rate is 3.67 and it's capable of opening carburetors up to 38mm in diameter. To determine your twist for the throttle, the 3.67 means for every 1 mm of wire pulled, the throttle tube rotates 3.67 degrees. If you have a bell crank on a carb and it take 25 mm movement of the wire to pull from full closed to full open, the formula is 25 mm x 3.67 = the throttle tube rotates 91.75 deg (about 1/4 turn) to full open. The design is essentially an copy of OEM Honda part number 53141-300-010 which is used on many vintage Honda models such as the CB750. Just be sure to take some careful measurements to determine if this throttle housing will suit your needs.