This is old info but might help. Tires and location are always helpful along with current setup .
Amarillo Guy Here. check Facebook, Redline Kart Sales.
Answers-no well in the world you can drive a shorty. For 5-10 yr olds.
Chassis from QRC
Shorty-you can tell, very small, bought for my 10 year, he was crammed.
Intermediate-use a mic and the bottom cage tubing will measure 1 1/8. Made for clones, animals, 125cc 2 stoke and 250f four stroke. Still 10yrs-16 maybe, 16 might be pushing it.
Open-here's what you need. Bottom frame will measure 1 1/4.I'm 250, 6' and it's still a chore getting in, but once I'm in, it's race time. My son is 10 but likes the open because of the room, and he's fast in it. Use this with a 250 four stroke, or a 500 2 stoke. These are mainly used for 500's and 450 four stroke.
Watch what you buy
'06 and prior, bearing front end, very old technology
07-09 pill front end, some adjustment in front end, but it's a hassle.
'10 or newer, block front end. Easier to adjust caster due to the caster blocks. Kinda like Phantom, kinda not near as cool though.
I sell 10-15 karts a month, mainly QRC. SPORT IS really growing and moving east into Az, Tx, Ia, Mo, and Ok.
Kyle Larson said Open kart with a cr500 is like driving a 360 sprint. Insane power to weight.
We ship all over US for $200. Rollers or race ready.
Call if your interested or even if you just need questions answered.
Shane Redline
806-683-9071