DBR06Banshee10 Posted March 5, 2014 Report Share Posted March 5, 2014 I have a 421 serval cub and i was wondering what pipes would be better for me? I am trail riding and a little bit of drag racing and came to the conclusion of which would be better for my build its a 421 serval with 4 mm 115 rod crank any suggestions would be helpful from anyone site sponsors etc Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
hp2000 Posted March 5, 2014 Report Share Posted March 5, 2014 CPI Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Nightmare Posted March 5, 2014 Report Share Posted March 5, 2014 CPI x2 Sent from my XT1080 using Tapatalk Quote Link to comment Share on other sites More sharing options...
bluebanshee98 Posted March 5, 2014 Report Share Posted March 5, 2014 CPI will pull lil harder off the bottom shearers will rev higher and make more peak hp 1 Quote Link to comment Share on other sites More sharing options...
bansheefromhell Posted March 5, 2014 Report Share Posted March 5, 2014 Fmf fattys Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted March 5, 2014 Report Share Posted March 5, 2014 Probably CPI Quote Link to comment Share on other sites More sharing options...
DBR06Banshee10 Posted March 5, 2014 Author Report Share Posted March 5, 2014 Why cpi tho Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
bluebanshee98 Posted March 5, 2014 Report Share Posted March 5, 2014 Why cpi tho Sent from my iPhone using Tapatalk well you said trail riding but explain more on that. is it fast pace trails thats more wide open or tight stuff? you could use either pipe but cpi's will get things happening sooner. like i said earlier cpi will pull harder off the bottom but the shearers will rev out more and make more peak hp. who ported your cylinders? might wanna ask them what they would recommend for pipes. it sounds like you wanna use shearers though Quote Link to comment Share on other sites More sharing options...
FullThrottle_06' Posted March 6, 2014 Report Share Posted March 6, 2014 Agreed. CPI is what I would suggest to Quote Link to comment Share on other sites More sharing options...
GOAT Posted March 6, 2014 Report Share Posted March 6, 2014 Is there much sound difference between the schearers and cpi's. I'm in the market Aswell. Lots of wide open grass whoops, 2 to 3rd hill climbs and the occasional 1 mile trek on asphalt.. The tight stuff is no fun/ more dirt bike/mtb oriented Quote Link to comment Share on other sites More sharing options...
Deadbeat Posted March 6, 2014 Report Share Posted March 6, 2014 both scream...if you want to quiten things down there are option$ Quote Link to comment Share on other sites More sharing options...
sleeper06 Posted March 6, 2014 Report Share Posted March 6, 2014 Cpi would be my choice for any trail oriented bike Quote Link to comment Share on other sites More sharing options...
GOAT Posted March 7, 2014 Report Share Posted March 7, 2014 Sorry to thread jack.Im leaning towards CPI's.. And by sound difference.. I meant.. audible, tone.. pitch.. charactiristics.? Or do they all sound the same.. I can honestly say ive only heard 3 different exhaust systems recently to go off of. Quote Link to comment Share on other sites More sharing options...
bansheefromhell Posted March 7, 2014 Report Share Posted March 7, 2014 ^^^ I would defiantly go with sound on pipe choice, not performance... Quote Link to comment Share on other sites More sharing options...
WINDYCITYJOHN400 Posted March 8, 2014 Report Share Posted March 8, 2014 ^^^ I would defiantly go with sound on pipe choice, not performance... X2 ^^^^ I would go with Rocket pipes. Makes bike sound like a real bad ass rocket. Then do the dime mod. I did them all. I even tried the 5 dime....but I thought the 4 dimes worked the same and sounded even better. 1 Quote Link to comment Share on other sites More sharing options...
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