You can contact Ron Hendrickson from the NMA,
I will ask the rider if it is OK to post his name, this is the internet.

I also believe the video shows what most people would see at your average chickenlicks raceway, that the bike is able to do what it is designed for.

......Time will tell.

The Pitster looked good, but Cobra, KTM, and Polini raised the bar with their '09 machines - whether it be via the new powervalve-equipped motor (KTM), or further development & refinement of the intake tract and cylinder (Cobra and Polini). Really need to compare the Pitster with the '09 offerings, there's that big of a difference.

If the CPSA doesn't kill off the small bikes via-a-vis lead law, should be interesting to see how this plays out.

Thankfully, we'll be onto the 85's by that time & won't have to fret about this....

let just keep the discussion going
if you do a little digging  you will see pitster has a very good rep in the pitbike scene and is continuing to mover forward in development

T Bolt USA said:

What happen to your post that I Just quoted? So we were talking about a MXR110cc bike and I ask what kind of horsepower your seeing and I get told to "reasurch" a YX125 and a YZ250f are near the same HP?

Now you said that the 110cc pitbike motor is a vast difference then the pit bike motor I had in my 125cc pitbike how so?

Whats the estimated HP and or Torque values of this Race Quality 110cc four stroke? I dont care about a comparison with YZ(X)125 and a 250F. Look at the cost difference if nothing else, the four strokes are loads more money when it comes down to a top end or just about any other fix that is needed.

What is NMA legal is that with the roller rockers? or with out? Stock class? Mod Class? - See where I'm going it seems like a smoke screen buy this its nma legal but for what classes?

Someone else pointed out that these bikes are only about 10 pounds heavier then a KX65. Well most 65's currently have steel swing arms, while the pit bike has aluminum. Thats a savings of 2.5 pounds, right there. There are plenty of other areas that could be changed for extra weight savings as well. When talking about young children when you say only about 10lbs you are saying more then a mouthful..

Correct me if I'm wrong but doesn't this pit bike also have only 4 gears verses 6 that the 2 strokes have? So there would need to be less shifting...

I'm not against these bikes I hope they do some how make it more affordable for the general population to get into racing.

Just a FYI Kx65's are not a good reference/Sales point when it comes to 65 racing...They are and have been behind the curve for some time.

I would also like to know the HP rating on the Pitster MXR110 and the KX65 and KTM 65. I'm curious just for camparison sakes. I currently ride an 08 Pitster X4 with a 140 cc engine rated at 12 hp and my son rides stock KLX110 rated at 6 hp.
ALso, thanks for the video. If nothing else the MXR110 is another alternative to a 2 stroke. It will certainly be easier for beginners to ride. Also, Pitster offers a version of this bike with a 4 speed semi auto tranny. While not intended as a race bike, it would be a better choice for a beginning racer than a KLX110.

I loved my pit bike it was plenty fast and loads of fun but it was traded for the wife a CRF100... But now we truly ride as a family. Ok she just putts...

Wandell said:

140cc rated at 12hp?  Our Lem 50 has 12.5 ????  I don't think this is the same bike they are talking about?

doesnt a full mod 65(71) put out 17 hp

I think his 140 is pretty mild my 125cc was said to have more then that stock...

NO THANKS....

Unless it's IMMENSLY faster or better, I think I'll stick with the good 'ol 2 stroke. "Even if" it were competitive, cost of maintainence, and repairs, I could do without. The way these kids bounce these 65s off the rev limiters, I could see floating alot of valves in that thing. I can do a top end in our Polini 65 for under 100 bucks. How much on the 4 strokes????

NO THANKS....

I still don't see it, til I see THE fastest 65 rider win on one at LLs!!!!

the 4 stroke engines were talking about are 2 valve units air cooler and they very inexpensive /simple to purchase and maintain
even to just replace
As far as hp rating we need to also consider torque curve
these motors grunt right of the bottom and pull very strong thru the entire range
as we move forward cutting thru all the hr4040 lead law nonsence and establishing NMA rulings we will have a clear cut class designation to present

This is a 2k MX bike with very real potential

Even if its only to C or B racers on a local level why not consider it?
Could open the door to alot more riders entering the sport and keeping our MX tracks open

hook em 22 said:

That is one of the funniest things ever?? until the fastest kid at LL?? silly, there are thousands of kids out there that will benifit from this bike that will never ever got to LLs.



anyone here ever heard of Parker Flemming?? he liked it, was planning on racing world mini grand prix on one then the lead ban came up. He could have ran with anyone on this bike, that kid smoked riders on a test session that were also very well known.
BTW, this bike has ran an entire local season (18 races)with my son on a preproduction model , finished third in the 65 7-9 age group championships, and never needed any mechanical repairs to the engine! none, also the complete topend rebuild is less that your $100!
We also never had to mix any gas and oil, or buy any special race gas!!!

I will not pass judgement until I see one in person.  Some people just have a hard time with change.  What would the same guys have said when the first yz400 came out.  NO WAY!  THAT THING WILL BLOW UP! COST TOO MUCH.  Awwww fooey  

Let's all just wait and see how they are??  

Thanks for the info NCC and TBolt  

Funny - I just read this...
There's a kid in our club who had a pitster pro (modded) and was racing against a line of 65's (ktm and green/yellow).
He didn't do so well - placed near the bottom every race.  A kid on a modded CRF80F was beating him continually.
The kid's parents got rid of the pitster and got him a stock Kawi 65, he now does better than he did and he now beats the kid on the honda.

That said though - maybe he just improved and the pitster blew up and the parents wanted him to be more like the rest of the kids and got him a kawi...I really don't know, but that could have been the scenario.

This all goes back to it not being the bike as much as the rider - my kid wins a lot on a relatively stock 2000 KX65 (you know...the small KX65 before the bigger, adjustable suspension, the KX65 everyone laughs at...) yet he continually beats brand new Kawis and KTMs and modded bikes as well, so IMO - it's not so much the bike as it is the rider.
Pitster pros are supposed to be better than your average made in china bike but this could all be marketing smoke and mirrors - it IS made in China (for an american company) but what these days isn't....pitsters also have marketing helping their sales and image - which automatically drives the price up to quadruple the price of a chinese brand bike of comparable calibre.
You could take any chinese brand bike and make it competitive on the cheap, but Chinese quality still leaves much to be desired, their metals don't have the strength or quality either and when the forks bust apart and injure your child due to an impact beyond their capabilities....well.....it's your choice

Fryboy said:

Haha.. yeah, fryboy.... guess you're right! Oh wait, they ARE too expensive, and DO blow up.

BTW, NCC. We'll see Parker Fleming this weekend. I'll be sure and ask him about the bike, lol..

My point being about the fastest kid at LL winning on one.. The fastest anywhere, and at any level is gonna give you the truest indication of the competitiveness of any bike. If the 2 strokes were competitive at the Pro level, Bubba would be on one. If the MXR 110 is the best choice, we'll see Sean Cantrell, Challen Tennent, and Chase Bell on one. We see alot of kids at little ol local races on ttr's, crf's, xr's, etc.., and that doesn't make them the wrong choice for them.

Hey.. I'll be open about the subject. Hey distributor!! Send one over here to the Dallas area. My son is an AMA 9 yr old, rides for the Polini factory team. He's capable of putting it through a serious workout. He's not Sean Cantrell, but he can decide if it's competitive at any level. We'll take a look at it, and see how it runs against really fast kids. Send one to Dallas....

did you guys get a look at this video ?
[url]http://www.youtube.com/watch?v=UZnaF4AHnmY[/url][/QUOTE]

the MXR is holding its own in a normal local type event

the bikes are legal for NMA 2009 & 2010

T Bolt USA said:

The Whole reason I keep talking about HP was to see if you had a number. You said in the above post that my pitbike was designed like a Xr200 and this bike is like a CRF250...Funny from what I have read the motors are pretty much identical in just about every aspect. My Pitbike was fast with my 215 pound butt on it, and of course it would be faster with my young one on it. I wanted to see how much more Powwa your 110cc was making then my 125cc. Since it has to be such a power house because of some vast change between the motors and less CC's.

I'm not doubting that torque is a huge amount of difference, but so is weight and HP. With less shifting it will for sure speed up the less skilled riders and maybe some more skilled riders. Several of the pitbikes that I have had and or have seen have flaws, weak metals things break, but I guess we have had issues with different things breaking on our Italian bikes as well. Its said that a "Pro's" shift is a loss of 22' compared to a bike that pulls without a shift.

Like I said before I hope they are a quality bike, that doesn't just bring people into the fold just to leave a sour taste and they exit the sport shortly there after. This will only hurt out sport with negative talk, which in the end doesn't assist you with sales or with as you say keeping our tracks open.

Tbolt I'm really not trying to pick on you and I realize you are in this to make money but what you stated about my ex-motor and the MXR110 motors would be a little bit of false advertising in my opinion. If I'm incorrect please explain. I'm not going to sit here and pretend I build pit bike motors for a living. (Now that I think about it I'm glad someone else gets to do it instead of me)

Ball Park a HP rating of a 110cc for me. If I remember right my 125 was suppose to make 12.9hp in stock off the show room floor condition.

Mine was aluminum framed, mikuni carbed, very plush suspenion, etc....A very fun bike...Just wish I would have kept it instead of trading if for a CRF100 for the wife.

Quote

This is taken straight from the NMA rule book...The MXR110 is only approved for Race in the Modified class...So Clarify for the parents that they may only run the thumper in the Modified class, now your dealing with much more then stock KX65's...

Do not lump Pitster in with any other pitbike company, they are the largest manufacturer in the industry, And the MXR,LXR line share virtually nothing with any other pitbike, even the MXR and LXR line share almost nothing with the rest of the Pitster Pro pitbike lineup.
These are the closest thing to an American bike you can get, samples of the bike were designed and built in the USA then taken to Pitsters own factory to be mass produced, they are not made anywhere else and NO china factory has access to the exclusive Pitster Pro parts, the quality of these models stand alone , high above the others.
There were many preproduction version of these bikes built and redesigned before the first production bike was built, almost two years of development went into these models.

For those that run or build pitbikes??
here is something to ponder,, 28 mm intake, 23 mm exhaust, 26mm carb , 7.5mm lift cam , very large port head, 30mm header, high compression domed piston, 51.5mm ore vs 53mm stroke, all stock .
other pitbike 125s off the shelf usually come with a small head , 22mm intakes, 18mm exhaust,about a 5mm -6mm lift short duration cam, 18mm carb, dished piston, a 52.5mm bore and 57mm stroke, and a 20mm or so exhaust pipe.

Ok.. so, let's see. Now, we're talking about these bikes trying to compete against highly modified 65s at NMA races? No way now. I know, I know.. we WERE talking about getting them exposure at the local level. FINE.. No way that bike is anywhere near competitive if it's racing only in the mod class.

Hey quicksilver.. that 12.9 horses your pitbike has, is barely more than the Polini X3.. A 50 cc bike! Stock, at that. I can only imagine what a highly modified Polini 65 has.... Or, one of the Cobra CARDS.

As for the video. It was pretty much inconclusive to me. None of those kids looked very fast at all. They all struggled to get out of the gate, and stay outa their own way. Totally out of position, and pulling the front off the ground. They looked way too beginner to me. So, yes.. maybe they would've benefitted from the 4 stroke. The kid on the KTM he lagged at first, and then when the pipe hit, he smoked right by the 4, and then when he realized the pipe hit, he let off. The 4 probably will have an advantage everytime for the first 8-10 feet, but after that.. I can tell you this. My son starts alot better than that, and he would never let off when the bike comes on the pipe....