engagement

Im wanting lower my rpm engagement for better performance in deep powder so I don’t trench and loading on/off trailer, sled is all stock. Ive done a lot research and I need help deciding between the Speedwerx H5 blue/white 120-310 or the White 125-340? Ive also read that you don’t want to go too...

Putting a new clutch on my 2007 M8 running 68 weights (6000-9000 ft) and was wondering if the stock yellow/white spring is fine or if there may be a better choice and why you like it if so. Thanks

2003 600 HO summit ZX, THe clutch engages at around 5100-5200 rpm. according to the manual it should be at 4100. I had the clutch apart, cleaned everything, there was no unusual wear and everything is stock. Is there something i else should be looking for? (pulley spacing or alignment, etc...)...