Clutching 05 900 151"

This isn't exactly stock to the tee, but IMO is the ideal setup. Take it for what it is..

Primary;
-black/green spring
-balanced and shimmed for 3211115 drive belt
-weights depend on your altitude

Secondary;
-Red/pink or black/white spring
-use a derlin washer under spring cup
-proper belt deflection
-helix anywhere from58-66 (first number), 44 or 46 (second number), 46 (last number)
---example of helix is 66.46.46er (electronic reverse)

I would not run the stock helix by any means, its trash and will cause high belt temps

Hope that helps.

Pretty much nailed it Guido !! May want to drop a tooth on gearing,depends on what you need.

I always space the gearing cause they always ask for clutching info, lol. bu yeh gearing is huge on RPM as well.

I was gonna build a 151 sled, and go with the usual (and BEST IMO) gearing of 19/42. (use auto tranny fluid or Polaris gear oil) as well.

your MAX rpms should be around 7800 +/- 100