Sparks MX vs. ESR TRX 6/7

[250r rider 88]

so as far as Ive read the Sparks is the better pipe overall correct?

also I'm running the 36mm mikuni tmx carb so i doubt there is anyone who can help me here but my basic question is:

will these pipes be similar enough in jetting specs that i can use ESR's recommended jetting for this carb?

[racerx573]

It should be rather close, depending on your other engine settings, call ESR or Sparks, most companies will help you with jetting regardless of what components you're running.

Or try another engine builder who does not make their own pipes...

Neil from C-Leigh should be able to help you also.

[Honda 250r 001]

ya start with what they say. jetting is not a perfect science. you just need to start with something oyu know is too big and work down. It will not hurt anyhting ot run it too rich for a plug chop. my 250r does not smoke at all when warm. even inthe winter. but it might shoot a small ammount of smoke when its cold in the winter i hope this helps.