I love my 440, I installed next-softer springs all the way around.
Man it hauls arse, yet now I don't get as tired on this particular [6 mile run] we do through the bush. I find it sucks up 6"~12" ripple bumps better on flat so I can get a rest while standing. The chassis stays more flat across everything you pretty well hit and the suspension does more work instead of my legs.
Since I do this standing thing now I can drive between 5 to 10 mph faster in bumps that normally would make my sled go *ping ping* across the top. When the track is off the ground, you have less control. I even set my torsions on lowest pos. and coupler blocks at uncoupled. My standing position has improved also. I used to hook my toes in while standing driving and now I drive in sno-x position with my feet towards the back of the running board where it starts to curl back towards the tunnel. I have more confidence when i come to compression dips or rises where it makes the sled go straight up in the air. The sled has less influence on my body, the sled goes up and i still can keep my feet on the running boards then rotate the handlebars through towards the direction where im going and because im up high i can see the ground better to time getting on the gas again to straighten me out. When I find my position, my feet are slight forward than I like, i just wait for a bump and let the sled kick my feet off the running boards so then my feet fall back and find the "honey spot"
..00000oooooh i can't wait to go riding tomorrow for two days out in the forest. *drool*
Put it this way....how I drive my 440 rev even with softer springs, to drive a consumer rev I will break that sled in half. My good pal has a 600 SDI and has the shocks done with stiffer high speed valving, it works very good however I can still bottom it out in compression 4' rises at the bottom of a hill. Not to the point of hurting my ankles but fking close...
...stock consumer model is like wet noodle.
Havva look here on an FAQ regarding the 440 rev.
http://www.mxzx-revzone.com/faq.htm
If you need part numbers for next-softer springs all the way around just email me.
Im putting the original centershock spring back in just to see what it's like again, however leave all other springs to next-softer.
Man my sled leaves them in the dust on the trail, no wait, it don't even do that I get so far ahead of a consumer sled..............as long as there's bumps, sheeya l8r....
As far as jetting, I leave mine the way it I set it up and you can follow my jetting specs they are good. Have dozens and dozens, never mind....rather a small army of 440's running my jet specs for safe running on 87 octane.
Oil injection can be installed for a small price.
L8R
J'
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