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  1. REV Chassis - Performance and Trail Models
    Hi Guys, I have an 04 Rev 600 HO adrenaline Carb. 4200 miles It currently has 800 miles on a top end rebuild with new pistons and rings. New V-force reeds. Before and after the rebuild, I am noticing a "dead zone" if you will while riding on winding trails. Narrow in NH. When the rpm drops below...
  2. REV Chassis - Performance and Trail Models
    My 07 600 SDI has about 10,100 miles on it. Its producing about 120 psi per cylinder so I'm thinking its time to refresh the top end. If the pistons are ok(no damage)is it ok to just replace the rings? Is there a good aftermarket rebuild kit or should I only stick with OEM parts? I also planned...
  3. REV-XP / XM Chassis - Mountain Sleds
    So I finally pulled my old sled apart tonight to take a peek at the cylinders the mag side piston was missing a chunk on the exhaust side top. Just curious what could have caused this? I am going to rebuild it once i order parts and get the cylinders replated but could be awhile since i am in no...
  4. REV-XP / XM Chassis - Mountain Sleds
    Wife squeaked her 09 800 Summit with 3000 mi this weekend( bad carb boots). Will do total top end with double ring pistons,snowx or rk tek. How long is the bottom end good for? Seals? Are aftermarket boots available? Thanks for your help.
  5. MXZ / Legend / Summit / Grand Touring / Formula
    Hi does anyone have any input on SPI pistons? seen a great deal online with pistons,rings,circlips, needle bearings and a winderosa gasket set. Or does anyone have a suggestion or any good stories about other piston companies? thanks everyone
  6. REV Chassis - Performance and Trail Models
    Ok so I took my 440/800 to the dealer to hook up oil injection and they hooked it up wrong so after 200 miles it had a melt down and I know I need 2 pistons and not sure how the jugs are but with 800 miles on the compleat motor rebuild is it worth it for me to tear into the bottom end with only...
  7. REV-XP / XM Chassis - Mountain Sleds
    Hi, I have a question that will probably be really easy for a lot of you guys to answer. I bought a summit 800r 154in last winter with about 3000 kms on it. By the end of the winter it had 3800 kms. At the end of winter, maybe the 4 last rides, the check engine light started lighting up when...
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