This is a little summary of Puch Maxi pipes with some basic info about what they are made for and how they perform.
"Made for" reflects to the cylinder size these exhausts work best on.
"Sound" reflects to the sound the muffler makes. Please keep in mind that sound is also dependant on the type of cylinder, air filter & carburettor you use.
"Rev-range" reflects to the RPM range this exhaust is useable for. IE. you have a Metrakit with a low to mid rev-range, and you want a Simonini that has a pretty high till very high rev-range, you'll know that isn't going to be the best combination.
"Powerband" reflects to the pull the exhaust creates and where it happens.
"Quality" reflects to lifetime, finish and other aspects that have to do with the quality of the material.
Biturbo
Made for: 50cc to 70cc
Sound: Heavy
Rev-range: Mid-revs till high
Powerband: Average
Quality: Good for the price. Silencer commonly rattles apart.
A diagram of the measurements of the Biturbo
Bullet
Made for: 50cc to 70cc
Sound: Heavy
Rev-range: Mid-revs till high
Powerband: Average
Quality: Silencer sucks and they occasionally drop off after a while
A diagram of the measurements of the Bullet
Gianelli
Made for: 50cc
Sound: Racey
Rev-range: Mid to top
Powerband: Mid-revs till very high
Quality: Very good
Note: This pipe is very rare
Homoet P4
Made for: 60cc & 50cc.
Sound: Racey
Rev-range: Pretty high till very high
Powerband: Worthless low end, great top end
Quality: Good, but the paint lets go soon
Homoet P6 & P8
Made for: P6 = 60cc to 70cc. P8 = 75cc+ and cylinders with an angled exhaustport
Sound: Racey
Rev-range: Pretty high till very high
Powerband: little low end, great top end
Quality: Good, but the paint lets go soon
Jamarcol
Made for: 50cc to 70cc
Sound: Loud as *&#**#
Rev-range: Pretty high
Powerband: Comes in late
Quality: Ok for the price
A diagram of the measurements of the Jarmacol
LeoVince HM
Made for: 50cc
Sound: Dirt-bike like
Rev-range: Mid-revs
Powerband: Good pull, holds back at top
Quality: Good
Note: Must remove center-stand. Not suitable for 2-speed engines
A diagram of the measurements of the Leovince HM
Proma CC (Circuit)
Made for: 50cc till 70cc
Sound: Thin
Rev-range: Mid-revs
Powerband: Good pull
Quality: Good
A diagram of the measurements of the Proma CC (Circuit)
Proma GP
Made for: 50cc till 70cc
Sound: Dirt-bike-ish, thin
Rev-range: low-revs to upper Mid-revs
Powerband: Nice pull
Quality: Good, but is rust-sensitive
Note: Considered by many the bestexhaust for 50cc stock cylinder.
A diagram of the measurements of the Proma GP
Proma LowBoy Twin
Made for: 50cc
Sound: Nice, twin muffler
Rev-range: Mid-revs till pretty high
Powerband: Nice pull
Quality: Good, but is rust sensitive
Proma Warrior
Made for: 50 till 70cc
Sound: Metalish
Rev-range: Mid-revs till pretty high
Powerband: Nice pull
Quality: Good, but is rust sensitive.
A diagram of the measurements of the Proma Warrior
Cigar (stock)
Made for: Stock 50cc
Sound: Soft purr
Rev-range: Low
Powerband: Almost non-existant
Quality: Good
Simonini
Made for: 70cc+
Sound: Metalish with aluminum silencer. Racey with kevlar silencer.
Rev-range: Pretty high till very high
Powerband: Low end is lost, but top end is extreme
Quality: Very good
A diagram of the measurements of the Simonini
Technigas Next
Made for: 50cc till 70cc
Sound: Very quiet, quieter on the bottom than tecno estoril, but gets louder up top
Rev-range: Low to medium- high (3000-7000 stock, 4000-8000 with kit)
Powerband: Hits hard early and pulls to a fat midrange, shuts down like tecno estoril but a bit later
Quality: Very very good, probably the sturdiest of the non-american made pipes
Comments: Somewhat expensive for the performance, but will probably last the life of the bike. Great for mildly tuned stock cylinders or conservative kits, a good pipe to pair with a 60cc airsal or alukit reed for a nice torquey around-town 45mph bike. The header is long and narrow so the power comes on late, but it is well designed for a broad subtle curve, and doesn't have the restrictor that causes the estoril to shut down. If you want something cheaper, get an estoril, if you want something faster get an estoril and derestrict it. If your mom is riding the bike to commute spend the money on the Technigas
Technigas Twin
Made for: 50cc till 70cc
Sound: Unknown
Rev-range: Pretty high
Powerband: Mid-revs till pretty high
Quality: Good
Note: To fit, you must remove the pedals and add a mounting point on the right side.
Tecno Boss
Made for: 50-70cc
Sound: Poppy
Rev-range: High on a stock cylinder, mid to high on a kit
Powerband: Comes on very gradually, for a stock cylinder with mild porting it will provide enough boost to let your cylinder keep pulling higher, with a kit you will feel a more noticeable gain from 8000 up. Not as powerful as a 'big pipe' so it wont catapult you into demonic super revs, but a nice big header wont hold you back.
Quality: good, baffle is welded into the rest of the pipe so it doesn't have the same drawbacks as bullet/biturbo like pipes.
Notes: looks stock, considered by many the best of the lower price bracket puch pipes. can be paired with almost every cylinder for a modest increase with limited drawbacks. Can result in a moderate loss of torque on 50cc. Header extends into chamber at weld about 2.5 inches, so for maximum performance remove the offending chunk of pipe and weld it back together.
A diagram of the measurements of the Tecno Boss
Tecno Hunter
Made for: 50cc & 60cc
Sound: Metalish
Rev-range: Average till pretty high
Powerband: Mid-revs
Quality: Fair
Note: Can't be used with pedals or centerstand.
Tecno Circuit
Made for: 50cc till 70cc
Sound: Heavy, bit metalish
Rev-range: Mid-revs till pretty high
Powerband: Mid-revs
Quality: Bad, silencer is a disaster
Note: Also known as " Tecno Racing"
Note 2: This exhaust is sometimes restricted. To remove the restrictor, read this: Unrestricting Tecno Circuit Exhaust
Tecno Estoril
Made for: 50cc till 70cc
Sound: Good
Rev-range: Mid-revs till pretty high
Powerband: Mid-revs till pretty high
Quality: Fair, silencer & paint are inferior
Note: Reports have surfaced of an interior restriction. To remove the restrictor, read this: Unrestricting a Tecno Estoril Exhaust
Made by SchijnHeilig. And yes, this took some work to copy.
Original is on: Puch Forum.com
Credit for measurement diagrams goes to Jorismb from Puchforum.com
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