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Only $10 for all 2024 SX, MX, and SMX series (regularly $30).
I probably wouldn't pay full price for one if it weighed the same as stock. $1300 can buy more performance than an exhaust.
https://www.vitalmx.com/forums/Old-School-Moto,22/1990-VRP-Mugen-125-re…
BTW: At the time i had the japanese HRC tecnicians take pictures of my bike in the GP pits!
Just to show some TeamGreen rider that maybe i am around longer than him
The older i get the more bikes i have.:
All 125cc twostrokes - i couldn't care less for fourstrokes....they're ALL too heavy anyway
The Shop
Nino, do you have a summarized list of the weights you took available? Maybe we can get in touch through mail or phone, I'm from Germany.
https://www.flickr.com/photos/ottospeed/albums
Most of the weights are in my AF build though:
https://www.flickr.com/photos/ottospeed/albums/72157632570549639
Or in here:
https://www.flickr.com/photos/ottospeed/albums/72157649383024720
I had almost every part of my bikes on my scale. Only this way you can find lighter options. In the end it's the sum of all little savings here and there...
BTW: are you german? Sprichst du deutsch?
This is the weight of my AF 125cc before i put handguards and a protection for my exhaust to get it to 88 kilos straight (lower weight limit for 125cc)
Rest assured that a bike this light feels and rides like a bicycle. Many have tried a 125cc already and know that they already feel light. Now imagine them another 5 kilos lighter...and especially light wheels. It's unreal. I did it since i wanted to stick to my 125cc bikes , using my 30 year old Mugen engines....yet the races i do with that AF usually i face competition riding modern 450s. So i concentrated on improving the 125s strong point which is it's little weight. I managed to get it so light to be competitive against tricked out 450s !
https://en.wikipedia.org/wiki/Work_(physics)
Super cool bike and great moto background.
The PC exhaust got installed...and together with the other modifications it really offers a huge increase over the stocker.
Stock the bike had 38,3 HP on that same dyno
RED:
opened up airbox
instead of the weird shaped intake collector we put the CRF 450 collector which is much better shaped
(No weird rectangular angles in the gas stream like the 250!)
Stock exhaust
Stock mapping
The 450 intake collector already showed a 1HP gain!
BLUE:
opened up airbox
450 intake collector
head work by swiss tuner
stock exhaust
stock mapping
GREEN:
opened up airbox
CRF 450 intake collector
head work by swiss tuner
PRO Circuit Ti-6 exhaust
Mapping (a sensor got brazed on to be able to do precise mapping)
A whopping increase from down low but especially the overrev now offers serious pull while the stocker would already stop pulling after 12'000 RPM. Now it offers endless pull up to the limiter.
Torque is much improved as well from down-low to the very top. A huge difference.
Still no real track testing but riding the bike in front of the house already showed a dramatic change. No comparison!
Here's the stock 250 intake collector.
By just looking at this 250 collector you would think if the japanese engineers had a little too much Sake
This is the 450 (and additionally my friend is a strong believer in rough surfaces everywhere gas flows to improve airflow. That's why he actually sands all parts with a super rough grain). The 450 intake is much more aerodynamically shaped. BIIIG difference.
So now we have some numbers too. Too bad not just for the Pro Circuit alone (on a stock engine) but paired to the head work and mapping it makes for a massive power gain.
You have to know that my friend and Sigi Zachmann back in the days were fierce opponents and not very much on the same "vibe". My friend would never go there to have his bikes tuned
My friend was multi-time swiss champion and once lost a championship on the green table to Sigi Zachmann when that guy put a claim when my friend arrived a couple seconds late to the pre-start of the final race of the year (which he then also won). But he got disqualified and obviously since the the "friendship" wasn't the best anymore...
Zachmann is the only Swiss tuner I know, I think I've heard he did Seewers Suzukis in the beginning.
Pit Row
So, uh, the PC pipe DOES WORK?
And it meets AMA/FIM sound?
I like your input on this forum but you have completely lost the plot in this case.
Thanks for the info Nino.
About the weight when compared to a POS stock system that's too damn loud...too damn complicated...to fragile...and..again..."NOT legal" in most serious pro racing programs.
Oh, by the way, that stick system doesn't work too well...either...which is another point at the core of my argument.
Making things light is one thing.
Making these light and actually "better" is another.
And, yes, I take this stuff SERIOUSLY.
It's what I do.
sorry if i hurt your feelings!
But i just passed some facts on this exhaust. Most others would just post a picture and drool over the bling-bling factor of the dual carbon endcaps...sorry: i'm not that kind of consumer. Honestly - for me a bike with a dual-exhaust is the biggest rubbish you could possibly offer. Putting twice the weight high up on the bike and still get less power? Ridiculous. I'm a diehard Honda rider since 30 years....but for me the little CRF is too far off the competition.
When choosing an exhaust for the '18 CRF 250 power was not the only priority. We definitely would have liked to shed some weight as the CRF is suffering not only powerwise but is also overweight.
I showed verified weights and it is not as light as most hope for when paying this kind of money for a full titanium exhaust.
BUT i also showed the Dyno-numbers to show that at least the power seems ok.
We should get some more numbers soon from testing both Yoshimura and HGS exhaust systems. It will be interesting to see those power numbers and weights as well and how they compare to the PC system.
Post a reply to: Pro Circuit Ti-6 Sytem for CRF 250 '18....HEAVY !!