The extended Cub gear on the Husky does slow it down, say maybe 10mph+ with 31's. We put fairings on the cub gear and got back 5mph, and teardrop shape fairings on the AOSS shocks and gained another 3mph. But still slower than stock Husky gear, but stock gear is not that great as many have stated. One can plop the Husky down with the cub/AOSS gear and just no bounce.
I have a 2018 Husky with the factory extended gear and the shocks. Factory gear is extended 4" taller and 2" forward, so is better than standard gear, but I like the cub gear and AOSS far better for the rough stuff.
The 2018 is very fast, 115-120mph, so if going fast is your goal, the stock Husky is great. Still get into short and rough stuff, braking is better with the 2" forward gear too, not nose heavy as much, but also not a 200HP model, they are nose heavy.
Not sure if the factory extended gear can go on an older Husky? Is set up for the shock system.
And I do have the SGS bumpers that Thomas makes, they help on the rebound, softens it.
John