The EZGO Heavy-Duty Leaf Spring for 03 and up is used on the front of the golf cart. This spring is not going to drastically increase the weight you can tow with the golf cart. If you need to support more rider weight, whether it's rear passengers or upfront, you need to be looking at heavy-duty rear leaf springs. The front spring supports the suspension and allows the golf cart to tow an insane amount of weight. They use EZGO's with heavy-duty suspension and no other upgrades to taxi large jets at the airport. If they can handle those things, we think your little lawn trailer shouldn't be an issue. We have seen customers drive their golf carts off the trailer and then hook that same trailer to their golf cart and drive off on the job site.Getting the golf cart front spring installed is a cinch. It goes on the same way the old one came off. All you will need is a set of sockets, a jack, and a couple of stands. Call Buggies Unlimited today for a great price.