Extractors......4-1 & 4-2-1....wats the difference


Junior Member
Senior Member
Apr 17, 2005
hey guys...

just wondering whats the difference in 4-1 and 4-2-1 extractor???
if i was going to get an extractor for my car, what should i look for before buying...

Thanks guys


Known Member
Senior Member
Jan 9, 2006
wat car..I using 4-1 in my 1.5 carb wira.I need to know too.coz I just need pickup.which better for pickup?4-1 or 4-2-1.
I heard mech and ppl say 4-1 for pickup and 4-2-1 for balance pickup and top speed.But my car 1st gear berat skit.but after 4-5K rpm for 2,3,4,5 gear,its feel
good.very quick.


3,000 RPM
Senior Member
Oct 25, 2005
bro,we discuss about this before.the thread is still around here somewhere.4-2-1
is for low to mid while 4-1 is for high end.meaning the first is for pick-up n mid-range
pull while the later is for top end power.in extractor,look for mandrel bent pipe
cos the gas can flow faster n if u got more money,look for a merge collector then
Y collector.merge collector exhaust tend to be more expensive cos difficult to make but
flow a lot better then Y collector.check out those jasma extractor.most of it come
with merge collector n all construct using mandrel bent tubing.

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