Big Foot Goped 750 Long Drive Spindle - This comes with everything you need for immediate and simple installation. Compare the 750 size spindle to the stock sport size 625 and you will see 20% increase in size which means a larger spindle is turning the same rpms which means you go faster. This is definately a case where MORE SIZE is a good thing – up to a point. We at Edge recommend that the largest spindle diameter you should use for your Big Foot be a 750. Any larger and your off-the-line performance will suffer. This is a knurled steel spindle not that cheezy stock replacement spindle that quickly wears down. This is the most cost effective and simple way to gain greater performance from your Big Foot and provides 3-5 mph greater top-end speed. This is a high performance item for your Big Foot and GEO BIG FOOT too!!