Parts for a new build

[gphil]

Rounding up parts for the next build and I will have a four pumper on it and the best available drive as affordable. I was wondering how much torque the rear gear cluster can take and how tricky it is when shifting. Under normal riding sometimes my bike will miss the shift and having that happen under power could be exciting I bet. I would like to utilize that system but can use the transmissions if needed. Which would you guys recommend? Going to have the HF Predator engine. May turn into a trike, who knows. Thanks and will be watching. gphil