yasani pipes

[hybridrazz]

ive seen that yasani sells a few different pipes for the zuma i was wondering if the c21 gives the greatest top end speed?

[str8dum]

only if your motor revs 13,000 to 15,000 rpm, which I'm sure it doesnt.

The c16 is even very hi rev pipe, as u need over 10000 rpm to properly use that one. A race ported Airsal or like a hi end polini corsa r might rev high enough for the 16. You really need a sick motor to rev high enough for the c21.

[XPS1210]

More than likely the 21 or 20 will need something higher reving than the corsa/R I'd say you should use the evo or MHR cylinder for either of those...

The 16 will work well with the corsa/R...

[pinkymingeo]

I run the C16. It's great over 10, really starts to put out at 12 and pulls well into the low 13's. For the C20/C21 add 1000-1500 rpm to those numbers. You don't want any of these pipes unless you have the right cylinder. For most street scooters it's hard to beat an RS70.

[rydah]

i'm getting the c21 for my bike.

[pinkymingeo]

I thought about a higher revving pipe but decided against it. With the RS70 my power peak was at 11.3K (dyno). Now it's at about 12-12.2. This cylinder would run the C20/21 but I don't feel the extra 1/2hp or so is worth the added wear and noise.

[hybridrazz]

so im thinking with a 100cc plus stroker motor the c16 would still be the best pipe?

[pinkymingeo]

I haven't messed with a big cc stroker, but I think you'll get your horses from cubes, not revs. There aren't many 100cc pipes around. Google Jolly Moto and see what you come up with.

[hybridrazz]

ok ill check into that thanks.

[rydah]

the c16 is made for 68cc and 70cc engines, so i dont think it will work good on a 100cc stroker. if you want to get a 100cc stroker pipe i know where to get them from.