It took Stage6 a while to get one of the most anticipated releases out of the door but finally it happened: The Stage6 Sport Pro MKII and Stage6 Racing MKII cylinder kits are available for Minarelli and Piaggio engines. Read all about them below including Dyno test results!
Update: The Stage6 Sport Pro MKII are now available for Minarelli and Piaggio scooters at an incredibly low price in our Store. Click here for the Stage6 Sport Pro MKII Minarelli and here for the Stage6 Sport Pro MKII Piaggio. The Stage6 Racing MKII is available here for Piaggio.
Stage6 Sport Pro MKII
Everyone who wants to get into scooter tuning and buys his first cylinder kit this is no doubt what I would recommend to get. An all aluminium street to mid-race cylinder kit at a very affordable price and with a perfect spare part availability. This kit gives you everything you would expect from an aluminium cylinder and it is not too hard to setup. If you want to get more out of your setup in the future it still has the reserves for porting and even stock runs great with higher revenue exhausts like the R1200 by Stage6.
At a price of 145€ for the LC version and 117€ for the air cooled model this is a steal. Ride this with a Stage6 Pro exhaust and a 17.5mm carburator for an instant 12hp or go hard with a R1200 and up to 21mm for an estimated 15hp.
Stage6 Racing MKII
If you want to be real fast and have already gathered some experience in scooter tuning this cylinder allows for 21hp when porting it to the max. The T-shaped exhaust port is revenue oriented by default but allows for maximum horse power when modified correctly. Due to the low price and and the amount of available spare parts the old version of this cylinder was probably one of the best selling cylinder kits ever sold. The new version improved the performance and will no doubt again be a best seller.
Priced at 187€ for the LC and 155€ for the air cooled version this cylinder kit is considerably cheaper than the Malossi and Polini kits. Ride this with a Stage6 R1200 exhaust and a 21mm carburator for an instant 15-16hp boost. In combination with an R1400 or Yasuni C21 and a 24mm+ PWK you will exceed the 18hp.
Will the stock crankshaft be killed from high rpm with Stage 6 Pro Mk2, Stage 6 R1200,21mm carb,Sport vario+clutch ?
The Piaggio cranks are a bit stronger than the Minarelli ones. Still, I’d suggest to go with a racing crankshaft, especially since you have the chance then to flow the engine case and adjust the boost ports to match the cylinder!
I bought Aerox and I don’t know what setup I should install. I prefer Stage6 Sport Pro MKII and don’t know what others parts should I get. I hope you will help me.
Sport Pro MK2 is a great cylinder! I recommend to get the Stage6 Pro exhaust (not replica) or a Yasuni C16. All of them work amazing on this kit. The C16 has a bit better quality than the Stage6 but is also more expensive. For carburetor it is sufficient to get a 17.5mm or 19mm Dellorto (or copy). Bigger PWK carbs use a LOT of petrol, so better go with the smaller dellorto’s if you want to ride the scooter on a daily basis.
Make sure to get an unrestricted intake manifold with the carburator. If you have some extra cash get some better intake membrane valve. Some standard sport one is good enough.
For transmission you should consider going a bit longer. The Stage6 kits come prepressed and are plug and play. Also the Stage6 variator and clutch are good and easy to install.
All in all this should give you about 15hp and 100kmh++!
Hey can you help to mee with streetrace setup? I have about 500-600 euro budget
Hi, Yes, sure. What were you thinking about getting? Maybe it’s best if you post to the forum. This way it’s easier to discuss!
Hi im prefer mk 2 racing (aerox ) , i think the combination with 21 mm and yasuni c16 is good ?
Hello, what gains would i see if i used this setup!
S6 Racing Mk2
S6 HPC 12 mm(already bought, so cant change!)
S6 Pro Replica Exhaust (already bought, so cant change!)
How many hp’s should i see?
Thanks in advance
The S6 Pro Replica Exhaust is made for the Stage6 StreetRace Cylinder Kit. You might get away with it on the Sport Pro MK2 Cylinder, but not the Racing. The Sport Pro exhaust, or better the R1200/R1400 are suitable exhausts for the Racing, but not the Pro Replica.
If you really can’t change the muffler, I’d go with the Sport Pro MK2 Cylinder Kit. Given your setup you will get about 12hp at the rear wheel.
No need for such a big carburator… 19 or 21mm is enough, everything on top won’t give you much more power, but use a lot more fuel!
The MVT millenium is also not necessary. No power gains here, unless you go with a high end setup like the Stage6 R/T or the MHR Team cylinder kits.
Hope this helps?
Carb – Dellorto PHBL 24 BS! forgot to say!
I`m also looking forward to purchase the Sport pro MK2 together with a Polini CP 19mm carb for my Peugeot Jetforce. Allready have a Malossi Multivar installed.
In regards to the exhaust system, everyone is mostly reffering to the C16 and the R1200, but what about the Doppler RR7 ? Do you have any information about the results in combination with the MK2 ?
Thanks in advance !
I don’t have any details on the Doppler RR, however in general I am not a big fan of Doppler as the quality is relatively low given the price they charge. The ideal exhaust for the Sport Pro MK2 would be the Stage6 PRO exhaust (not replica).
Thanks for the fast answer ill get the sport pro then!
One more thing, if I buy the Racing MK2 anyways, can i get bad reliability issues?
With the Pro replica Exhaust?
Or the only bad thing is that ill only get the 12 hp like the sport pro?
I do 30 miles Trips, 35-40 mph ! Would the racing keep it?
Because I’m thinking , if i sell the muffler some day and buy a r1200-1400, i already had the racing cylinder… So i’d get more performance-!
Hope you can understand what i writted!
Thanks in advance
The Racing will actually last you longer with a less revving exhaust like the Pro Replica. As the engine runs at lower rpm. No issues with durability. Make sure tho that the setup is perfect for these long trips and ensure that it doesn’t overheat (this would be the case with any tuning cylinder!). I would also recommend to install a longer transmission for these trips to lower the rpm even more…
Hope that helps!
Thanks a lot ! Then i`m not going to take the risk to buy the RR7 as indeed the price is quit high when the quality is quit low compared to others.
However, what is a good alternative to the Stage6 Pro with an approximately equal power output ?
I have Peugeot Jetforce and the S6 Pro is not available for horizontal engines, only the Replica. Also the C16 /20 / 30 nor the R1200 / 1400 are availlable for my scoot.
Maybe a Technigas RS2 or the Yasuni R ?
Hi Daniel i can’t decide which would be better for bigger power the stage 6 racing mk 2 or the Airsal 77cc kit?
I’d go with the Stage6. There’s heaps of perfectly matching exhausts available for this kit, whereas the Airsal is more of a niche product!
Thanks for the quick reply! But i dont realy understand what do you mean by “niche product ” and i forgot to tell you i want to install it on my derbi senda not a scooter and there aren’t a huge amount of exhausts for derbi! So is your final answer still the same, if i am looking for GREATER power i should go with the smaller 70cc kit not the 77cc kit?
Thanks for the quick reply! But i dont realy understand what do you mean by “niche product ” and i forgot to tell you i want to install it on my derbi senda not a scooter and there aren’t a huge amount of exhausts for derbi! So is your final answer still the same, if i am looking for GREATER power i should go with the smaller 70cc kit not the 77cc kit? It would be helpful to know.
it seems like you know what youre talking about..
French in the us.. I had a zuma 70 athena, 17.5 carb, reeds, NYC clutch variator, leo vince zxr.. and more.. was pulling hard but not screaming, scary fast.
But it got stolen last month… sucks.. but F it.. I wanna build a new one.. screaming fast.. I have a good vespa mechanic who works on 2 strokes only, he will build what I want.
So I need a perfect detailed horizontal minarelli set up.. from the exhaust to the rollers weight.. help me own the city w my moped..
sorry to hear about your stolen Zuma :-/
Abput your future setup, it really depends on personal preferences. Do you want torque, or high acceleration. How long do you want the piston to last? How much cash you wanna throw in, how about petrol? What scooter model is it gonna be? Do you get a brake upgrade, etc. If you can tell me a bit more about these things I can help you better I guess. Otherwise a good alround setup is the Stage6 Sport Pro MK2 along with a Yasuni C16 or Stage6 r1200 exhaust and a 17.5mm carb. Also get a sports crankshaft (doesn’t really matter which one, but full circle ones run smoother than the non full circle ones). Longer transmission helps with the speed and lowers the rpm a bit in the city. Variator, clutch and pulley by stage6 are always a good choice. Malossi are great too. Stay away from Polini here, they are not so great.
Hi Daniel , i have aerox(2009 ) with sport pro mk2,carrera 16 , 21mm motoforce , sport pro clutch(4,7gr) , mk2 torque control clutch(orange) , red central spring , and i want more max speed … What you think about 14/42 primary ones ?
Yes definitely a longer final end would help. What is the current transmission in the Aerox? I’d go with about 15-20% more, unless you want really high top speeds!
Hey Daniel, I am currently running a Yamaha Zuma with a stage6 racing MK2 (air cooled), stage6 pro exhaust , a stage6 racing 85mm crankshaft, and a stage6 racing pwk 24mm carburetor with a power valve. For around short distances I run 3, 4 gr. and 3, 5.5 gr. rollers for a total of 28.5 grams. And for long trips I run 3,5.5 gr and 3, 6.25 gr rollers for 35.25 gr.. also I am running the stage6 overdrive transmission. The bike absolutely rips, wheelies with light rollers and 70 mph plus with heavier rollers . So I guess you are wondering what am I bitching about, well I am not getting there fast enough. I am stuck on what exhaust to buy either a Stage6 R1400 or the Yasuni C30. What do you think?? I read your articles on the both exhausts. It’s hard for me, I am a huge Stage6 fan.. But, the Yasuni is pretty impressive.. Thanks for your time, John. Dead dog tuning South Florida
Nice setup! I’m sure it turns some heads over there in Florida :) In general both the R1400 and C30 are very high revving exhausts, which means high power and top speed, but a bit lack of torque. If you ride the scooter on the street I would probably rather go with a R1200 or a C21. If money is not an issue, I find the Yasuni to be of a bit higher quality. Also you have more choices when it comes to the silencer (Kevlar is sexy!). Performance wise, both will burn holes in the street and you won’t notice a difference!
Does this help?
Btw. about the rollers dilemma. You should try different settings for the rear pulley. With different pulley springs you might be able to find a setup that works equally good for short and long distance rides!
Hey Daniel, yes it does help and thanks a lot. I don’t ride it very much but when I do it is only 10 to 20 mile runs. The stage6 R1400 just became available recently so I went a head and ordered it. I really want it to rip if you know what I mean? If it isn’t what I am looking for I will look into the Yasuni C-21. I forgot to mention I have the stage6 inner rotor system so I advance or retard the timing to compensate for the low end torque. How loud is the R1400 as oppose to the Stage6 pro? And also you said something about the springs in the rear drive pulley. What did you mean about adjusting the springs? Clutch springs or contra spring to get the rollers in line with acceleration off the line and top end? And Thanks again for your time this is an awesome page.. John
Mhm, difficult to say if the R1400 is louder. It sure allows for higher RPM, which would make it louder in general, tho the carbon silencer is of a better quality than the PRO and it should keep it a bit quieter. I am also not sure what the wall thickness of the R1400 is. I know there are two R/T models with different thicknesses to stay within limits of German kart tracks, tho I’d guess the R1400 has thinner walls as it is merely designed for Drag rather than Track Racing.
About the spring: I guess you’d call it the contra spring. What it does is, it holds the belt in for longer and thus works against the variator. That means, when you install a harder spring in the rear you will also have to install heavier rollers, as there is more force needed to separate the rear pulley. This way you can work on the acceleration out of corners, which can often be slow, if rollers are too heavy, but good for standing starts.
Hey Daniel. thanks for all the input. I have received the R1400 last week and mounted it on Friday night so I could adjust the carb over the weekend. Well. long story short I worked on the carb for the better part of both days.. Then I realized that it is so not for just cruising around town, and I would hope some other readers can learn from my mistake. It is for drag racing only being that it comes on at about 11,000 RPMs.. So back to the Pro pipe and it runs great. So, oh well there is another 300 dollar paper weight. So, I think I will go with the Yasuni C21. Hopefully, that will work out. Thanks again, John
Hey Daniel, you know I put back on the stage6 pro pipe. And boy does it vibrate is this what you mean by build quality?? The r1400 vibrated a bit too. Also, I was getting ready to order a Yasuni exhaust. It runs really good with the Pro pipe, I just don’t want to over pipe it like the R1400 seemed to do. You said C-21 what is the difference between that and a C-16. What are your thoughts on that. And the build quality as far as vibration.
Just answering this again as a drive crash killed my comment. The C21 (and C20) are great for faster 70cc engines, where the C16 is a better choice for Sport to MidRace cylinders. All of them are quite loud tho…
Hey Daniel, I was amazed the way you answered all the query in this forum and hoping that you could help me too..
I have 2013 sr50r with stage 6 pro rep exhaust, malossi multivar 5.5gms of roller weights, malossi clutch spring (yellow), malossi contra spring (white), 62 main jet and other than that stock..
now my question is with this set up that I already started, I was thinking what is the best 70cc kit fot my scoot, best size of carbs that suit on my stock airbox, and correct size of jettings and do I need to change the reed valve as well? thank you in advance for your advice much appreciated..
If you use it as a daily ride and given the current gas prices I wouldn’t go higher than 17.5mm carb. Maybe 19mm, but the power increase isnt worth it IMHO. The Delorto carbs are great and it should run well on stock jetting already. You will require a new manifold for the carb as the stock manifolds are limited to 12mm usually. Reedvalve isnt necessary but I would replace the reed pedals with carbon/kevlar ones.
For cylinderkit I would choose the Stage6Pro MK2 over any other kit. It’s just so good for the price and will run awesome with the replica exhaust!
Hi I’m after some urgent assistance I have put a stage 6 racing mkii cylinder kit on my aerox with hpc crank stage 6 inlet track kit stage 6 r/t 24mm carb stage 6 oversized vari stage 6 clutch and I’m stuck what pipe to buy I was leaning towards a 1400?
Could let me know your take on the following
I am in the market for a scooter….I am not sure to either go Aprilla SR 125 or the SR50R.
We do have a lot of open roads here and cars will hit the 100 km/h, and so I wanted to get something that can reach these speeds.
A twigged SR50R from what I understand could reach these speed, especially if I was to upgrade to stage6Pro MK2 70cc kit adding ( The Stage6 HPC (high primary compression) crankshaft is a full-circle crankshaft) combined with a yasuni c16,c20 or c21…!!!
With a17.5mm carb. Maybe 19mm. A bigger better sparking system.
Let me know what would be the better component to match the rest of the modifications to upgrade the transmission.
I like the idea of water cooled as it will maintained more even temperature.
Thank you and I look forward to hear from you
To be honest if you want an easy life, just go with the 125cc version. However if you enjoy spending weekends in the garage and making it your own, with sweat and tears, then go with the 50cc and customize it. Tho, keep in mind tuned scooter use a lot more gas than stock ones. If you like to go on trips, etc I’d rather get a large scooter and maybe throw a racing pipe on it.
Thanks for all the great articles. I am at a bit of a loss here and hope you could help me. I have just built a completely new engine (crankcases the lot) with Stage 6 Racing MKII cylinder head, port matched with derestricted Yasuni C16 pipe. I currently have a Dellorto VHST 24mm carb on but the bike keeps on flooding, wet plug, chucking fuel out pipe etc. I have tried everything and now decided to just get another smaller carb, namely the Dellorto PHBG, but not sure what size would be best 19 or 21mm? Any help would be much appreciated.
Hi I have a piaggio mc3 ac , I was wondering what size jets are recommended with the stage 6 mk2 race pro kit ?
i hav ea gilera runner c36 with the stage 6 mk2 racing / 28mm Flat carb MVT digital deluxe ignition la furia rossa overrraange kit and a yasuni c16 now im thinkin about a new exhaust but cant decide c21 / r1200/r1400 and im still running the factory cranshaft xD ( first idea was to check to when the factory shaft gives up buuut plans have changed^^ )