Owens

This was the guide the AMA used here in Aus. I think it is a good summary. T1 Green The most difficult division, suited to top level riders T2 Red High Difficulty T3 Yellow Moderate-High Difficulty T4 Blue Moderate difficulty; suited to the majority of riders and experienced riders on twinshock (pre-86) machines T5 White Lesser difficulty; suited to younger riders, returning riders, sidecars and classic (Pre-65) machines T6 Orange The least difficult division suited to new riders, mini bikes, young kids and older riders. Regards Tim

Long term owner of a 2017 Beta 4T standard model. Lots and lots of hours on it and the engine is not far off new in terms of performance. I will say that they do take a while to run in (stalls more easily when new than when run in) and the carb arrangement is poor with the rubber boots being both poor quality and tricky to correctly install. Outside of those issues everything else is the same as a 2 stroke beta. The beta 4Ts (standard or factory) are also supplied with a better clutch than the standard beta 2 strokes. I always run penrite 10-60 oil and nothing else matches the clutch performance I get with that oil. I have had to do zero carb maintenance on the bike and I have owned it from new. Have ridden in deep water, rain etc. It's as good as a carb gets in terms of reliability. With any of the 4 stroke bikes I'd recommend a better bash plate such as the costa special parts offer. If you are a big fella the standard beta suspension may be too soft and I'd go with the factory model. It's perfect for me usually in the 75 to 80kg range (~170lbs). Cheers Owens