I had 2 of those years ago. 1 on my BSA 500 Dirt bike and 1 on a BSA 750 Twin for flat track. The Wheel that the cable attaches to, is larger, also the grip itself is a smaller dia. Be aware, sudden power engagements (Narrow Band power) can cause you to open it up more that you want. I let a friend of mine ride The BSA 500 single and warned him about the 1/4 turn racing throttle. He didn't realize the torque that bike had, and the first thump jerked him back and of coarse caused his throttle hand to go back also. He learned to do wheelies while his feet were behind him, not pretty as the bike kept accelerating.