Here's my two cents from a guy who's now done with mini's...WOOOHOOO!.
As stated, size and future size of the rider is the biggest factor is this decision. The Cobra chassis is proven with whoever's components... but if your rider is tall or up to 120 lbs, you need to move up to something else.
Hands down the Robert's chassis is the strongest. JB continues to improve his as needed.
BUT, for my then 14 year old, the full size chassis was the way to go now looking back... the CanAm chassis is far lighter than anything else out there.... I made my own brackets for the engine BUT the Six5design brackets are king(Jake is the man). For what is worth, I had under half the money in my CanAm's than all our competition.
Engine: Zimmerman's PR2 Suzuki's are fast as crap. I am not a fan of the Honda 150 ONLY cause of costs involved in making them fast... As far as engine builders: The big dirt bike engine builders are best...example: PR2 or Mitch at Pro Circuit...
Now, I hear the new Kawasaki KX 85 is badazz from the factory... now, send that to Pro Circuit and blister the field.
Shocks, pick your poison. The newest version of shocks work great... I like Fox floats cause they are light... But our PB1's are awesome!
If money is no object, and your rider is 110lbs and growing, buy the new Six5design set up. It is set up to accept motors as the rider grows including a 450! Buy one quad and be done... as we all know, you loose your butt on mini's on resale...
If money is a factor, get a CanAm and put a PR2 RM in it... Throw the JB components on it and go racing... works for Hetrick....
AND LAST BUT MOST IMPORTANT: If your rider does not push his thumb forward...it does not matter what they are riding.
Did I mention that we are not in the mini classes anymore? LOL.
Wannabe Racer Dad of:
#34 Logan Dusenberry
2014 AMA/ATVA 450 2X National Champion
ALL OUT RACING
2015 CanAm JB/Mt. Dew Live Wire Amateur Race Team
2014 Sponsors: Extreme-Tec ATV, Makson Incorporated, Corrosion Specialties, Rath Racing, Walsh Racecraft, SF Racing, Baldwin Motosports, Apex Powersports - New Philadelphia, Ohio, Action Extreme Sports - New Philadelphia, Ohio,