im not being a hater but every one that wants a 330 from some other company you say its just a 310 bored out well is ct 310 bored out also or is it ok my dad bought an esr 330 powervalve cylinder and he can bore it three times when it needs to be oh and what do you think about duncan racing motor kits and there pipes my dad loves his paul turner arnt they like the best in the industry i would like to know your thoughts because i know your like the big 250r guy thanks

ESR makes awesome pipes for the 250R's.

i believe he was talking about the bolt on 330 from esr. which only has 1 bore left on it.

all ProX dealers like ESR and CT get there stuff from LA Sleeve who manufacturers the actual cylinder.

No hate, just good info!

I think you misunderstood me and as it turns out I was also wrong! HA2 said what I thought was true.
Before writing this I called ESR to find out the dealio.

They said the bolt on 330 IS a true 330! What they do it machine some of the lower skirt off the sleeve so it doesn't stick down into the cylinder as far. BUT that 330 uses a 76mm piston!
IF you blow that top end your only choice is to pay $325 for a re-sleeve.

So the ESR bolt on 330 is a 330 but you can not bore it ever! For the $325 price you could of almost splint your cases and had it machined!

Here's something to confuse you even more:
If you buy a true 310 it is actually a 304 (+/-2 cc's) until you reach the last bore! Same for the 330 and 350, it's not a 330 or 350 until you reach your last bore.

For the 310 it comes with a 72mm piston. Due to piston size availability the next bore of a 310 is 72.2mm then 72.5mm. From 72.5mm and up you must go in .5mm increments. This gives 5 bores on a 310.

With a true 330 it starts at 76 and you can get 4 bores out of it to a max of 77.5.


Confused?

BTW: anyone who wants a 310 bolt on---I can send you a CT racing 310 kit (cylinder, head, piston, and all gaskets) for $875 shipped (+tax in CA)


Duncan racing does some unbelievable work. Their parts, craftsmanship and customer service is the best in the industry. The down side to Duncan is their prices. You pay TOP dollar for their stuff.

Personally I like the ESR pipe (TRX5) better. But everyone is different.

A good friend of mine just got the ESR 370 in his 3-wheeler I don't know if it's a true 370 or what but that thing is crazy fast.

lol i bet it is. those off the shelf drag ESR 370's run real hard. i know one that was 2nd or 3rd fastest Honda at the hill on Halloween. Another in-house ESR honda was fastest Honda but it was closer to 400cc's and had major frame mods and a titanium swinger.

Stock swinger PEP revalved the shocks Has been know to ride a wheelie across the face of Patton and off into the distance and that was with the CT330 kit only seen him get beat once and only after the guy on his 420 long rod Banshee fired up the NOS.

stock swinger? your friends on crack!

i ride a ported 250 and a +4 is the best thing ive ever bought. everyone said id be crazy to go with a 330 with stock swing arm but a 370? thats scary. my bike comes up on me in 4th gear while drag racing flat ground.

i have pictures of my on the tank riding 4th gear wheelies. i weigh 160lbs soaking wet and been riding trikes all my life. git r dun!

Sparks does some crazy work on the R's as well

Same goes with Baldwin

you guys are all smoking crack to be riding fugin trikes eff* trikes

obviously not selling crack or id have a TRX250 to race as well.