No you do not. The JumboMax Grips are more than double the weight of normal grips. This will throw off the swingweight of your clubs. If you order new clubs and can get them installed at the factory, or in a fitting with my recommended fitter then I would give them a try. Please try them though before buying. They are really big grips. I do have recommended grip sizes for my method which are only a bit thicker than standard. Custom fit to each person’s hand size. Members can email me for individual sizing information.