List of Big Bore Pipes - 1-1/8" Stinger Diameter - TRX250R

[havinnoj]

Starting this thread based on Chat Box convo regarding companies who manufacturer "big bore" 250R pipes - specifically those with a stinger inner diameter (I.D.) equal to 1-1/8" (1.125").  Standard pipes have an I.D. of 1".

With that said, please feel free to post up additional pipes until we have a comprehensive verified list.  Post up what ya got and I will edit the master list.  Eventually this would make a nice sticky or Tech Article.

How about FTZ, Trinity, CT, PSI, etc.?  


CPI Racing

• Puma Inframe
• ?
• ?

Curtis Sparks

• 330 HR (need to verify)
• 330 MX (need to verify)
• BB TT?  (what was the actual name of this - it is hand coned).

LED Performance Engines

• 350G Team
• Puma Pipe (Gen 1 - circa ~????)
• Puma Pipe (Gen 2 - circa ~ 2014?)

LRD Performance

• 350B
• 350D?  (?? possibly the successor to the 350B?)
• ?

Shearer

• ?
• ?
• ?

Note that stinger diameter is not the only thing to consider when looking at a BB pipe.  "Big Bore" can be relative - for example, ESR's TRX11 pipe is considered a BB pipe for motors up to 370cc.

Related Info for future..
http://trx250r.org/threads/6998-Modifying-5b-cm?p=64291#post64291

[Skeans1]

Starting this thread based on Chat Box convo regarding companies who manufacturer "big bore" 250R pipes - specifically those with a stinger inner diameter (I.D.) equal to 1-1/8" (1.125").

With that said, please feel free to post up additional pipes until we have a comprehensive verified list.  How about FTZ, Trinity, CT, etc.?  Post up what ya got and I will edit the master list.  Eventually this would make a nice sticky or Tech Article.


CPI Racing

• Puma
• Packard Pilot cylinder
• ?

Curtis Sparks

• 330 HR
• 330 MX
• ?

LED Performance Engines

• 350G Team
• Puma Pipe (Gen 1 - circa ~????)
• Puma Pipe (Gen 2 - circa ~ 2014?)

LRD Performance

• 350B
• ?
• ?

Shearer

• Puma drag, torque, and center mount
• Sphinx drag and torque
• ?

Related Info for future..
http://trx250r.org/threads/6998-Modifying-5b-cm?p=64291#post64291

Hope there's more

[Michael88R]

Esr added a B to the part number of most of their pipes. Eddie told me it stood for big bore. They still have the small stinger id but the head pipe is bigger diameter.

[havinnoj]

Esr added a B to the part number of most of their pipes. Eddie told me it stood for big bore. They still have the small stinger id but the head pipe is bigger diameter.

Thanks.  Maybe it would be good to expand this list to a few different categories - ones with 1-1/8" stingers and others that are built for (the fairly ambiguous term) "Big Bore" motors.

[etccb]

I know this post will get "corrected" by a certain someone soon but I am going to make it anyway. A lot of people are believing they need a larger stinger when they don't necessarily need it. Big bore or bb does not mean big stinger. As an example the esr b bb pipes lower the temps over standard pipes and there is another well known pipe builder who also uses a standard size stinger with his pipes for 370ish bb engines. There is more to it from flange to stinger tip then just the stinger size and the thought that a 330 to 370 needs a larger stinger is not always correct. There is a give and take to the stinger size as part of the total package or a cr125 would have had the cr250 size stinger and a cr250 would have had the cr500 size stinger etc. Someone attempting to make you think a pipe builder is wrong and does not know what they are doing if they use a std size stinger on their bb pipes for 330 to 370 bb 250r engines is what is wrong.    
>>>>>"IMO"<<<<<
edited

[havinnoj]

I know this post will get "corrected" by a certain someone soon but I am going to make it anyway. A lot of people are believing they need a larger stinger when they don't. Esr b pipes lower the temps over the previous standard pipes and there is another well known pipe builder who also uses a standard size stinger with his pipes for 370ish engines. There is more to it and a 330 to 370 needs a larger stinger is not always correct. There is a give and take or a cr125 would have had the cr250 size stinger and a cr250 would have had the cr500 size stinger etc. Someone attempting to make you think a pipe builder is wrong and does not know what they are doing if they use a std size stinger on pipes for 330 to 370 bb 250r engines is what is wrong.    
>>>>>"IMO"<<<<<

Yes there are a couple schools of thought on this.  What you're describing was referenced in the link I posted in the original post.  And to be clear, this thread wasn't created to discuss which setup was/is better - it's just to document pipe options with 1-1/8th stinger tubes for reference.

[fast350r]

My cpi puma inframe , has the 1 1/8 stinger?? its a hand coned but I don't know if it has a certain name imposed by Mike at CPI

[havinnoj]

My cpi puma inframe , has the 1 1/8 stinger?? its a hand coned but I don't know if it has a certain name imposed by Mike at CPI

Thanks - I just added it as "Puma Inframe" for now.

[spiritaces]

Well my builder says I need a big bore and I'll have to just take his word for it. Don't matter anyway since I needed a pipe so might as well get what is recommended

[Michael88R]

Well my builder says I need a big bore and I'll have to just take his word for it. Don't matter anyway since I needed a pipe so might as well get what is recommended

That's the best. Find a builder that u trust and do what he says.  Finding the builder that u trust is the hard part.

[croat1]

Dynoport? I wonder what they offer? i'll make the call and post up what I find out.

[spiritaces]

Rich Daly (Dynoport) offers bb pipes I know that for sure

[The_Steve_Man]

I have an LRD adjustable pipe for an ATC that is bb.

[hickwheeler]

I thought I say somewhere someone had a big bore trinity

[Michael88R]

Unfortunate this thread didn’t get more results.  Hard to know what to do on stinger size if you r in the 330-370 cc range.  Anyone know the stinger size for the following pipes?

New Esr trx10
Ktm 380 dirt bike OEM