Meet the Champion 4 MAX Round Front toilet, the undisputed leader in high performance toilets. With the industry's widest 2-3/8 in. trap way and 4 in. flush valve, it virtually eliminated clogged toilets for homeowners and call backs for plumbers. The Champion 4 will move a mass 70% larger than the industry standard. It achieves the highest bulk removal rating of 1,000 grams and will even flush a bucket of golf balls. Which means you can flush with confidence.