dburnexx Posted June 16, 2014 Report Share Posted June 16, 2014 i am lookin for a little stronger reliable trail bike would a 421 serval stock lenght crank be alot more than my stock drag ported cyl im at 65hp now just curious if a stock stroke serval will put out in the 70s to 80s Sent from my GT-S5360L using Tapatalk 2 Quote Link to comment Share on other sites More sharing options...
rjdgriff Posted June 16, 2014 Report Share Posted June 16, 2014 421 serval is a 4mm crank. Do a 4mm ported serval , you'll like it. Call redline 541-367-2453. Have your credit card readywhat he said. The 421 4mil serval is a blast in the trails Quote Link to comment Share on other sites More sharing options...
dburnexx Posted June 17, 2014 Author Report Share Posted June 17, 2014 ok thanks will i need a longer swing arm Sent from my GT-S5360L using Tapatalk 2 Quote Link to comment Share on other sites More sharing options...
Nightmare Posted June 17, 2014 Report Share Posted June 17, 2014 ok thanks will i need a longer swing arm Sent from my GT-S5360L using Tapatalk 2 That would depend on you but more than likely yes. I wouldn't go past a +2 for tight trails though. Sent from my HTC One_M8 using Tapatalk Quote Link to comment Share on other sites More sharing options...
rjdgriff Posted June 17, 2014 Report Share Posted June 17, 2014 +2 would be good, I ran a +4 on my 421 and did fine but I think the +2 would have been great Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted June 20, 2014 Report Share Posted June 20, 2014 -2 swinger FTW 1 Quote Link to comment Share on other sites More sharing options...
dburnexx Posted June 23, 2014 Author Report Share Posted June 23, 2014 ok thanks. also what size carb will i need i was told i could run stock and be fine. thanks for all ur help Sent from my GT-S5360L using Tapatalk 2 Quote Link to comment Share on other sites More sharing options...
dburnexx Posted June 23, 2014 Author Report Share Posted June 23, 2014 ok thanks tryin 2 get 1 built by jan. at the latest just gettin a price range got a build quote frm F.A.S.T racing for 2500 so im lookin at about 4500 for the full build. just tryin 2 save alil $ Sent from my GT-S5360L using Tapatalk 2 Quote Link to comment Share on other sites More sharing options...
dburnexx Posted June 23, 2014 Author Report Share Posted June 23, 2014 how many paddles would be needed if i had skat trac hauler tires Sent from my GT-S5360L using Tapatalk 2 Quote Link to comment Share on other sites More sharing options...
rjdgriff Posted June 23, 2014 Report Share Posted June 23, 2014 I would run 9pdl b2b buff 72-73 ro. Atleast that's what I ran on mine and it was about perfect IMO Quote Link to comment Share on other sites More sharing options...
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