You have a LARGE RANGE of bikes to choose from, CRF150R's, CRF/XR100's, KTM65's, RM85's, NSR's, YSR's, Metrakits, Pitster Pro's, TTR125's, KLX110's, SSR's, Derbi, etc... any mini up to 105cc 2 strokes, and 150cc 4 strokes (liquid cooled) and 200cc 4 strokes (air cooled). For more info on the rules, click here: http://www.ohioysr.org/rules.htm Leathers or textile suits are good (2 or 1 piece works). Leather gloves, race boots and I'd get a back protector also! If you want a place to get some cheap leathers (I was told they are good suits also) I'd buy one of these.. http://himalayaleather.com/products.php?cat=35 Gloves are cheap at Iron Pony (around $20)