crf carb or trx?

[GOTFEAR]

I have a CRF450 motor whats the differences between a crf carb and a trx carb and i have the crf electronics

[HondaRaceReady]

The CRF carb is 41mm and the TRX one is 40mm. Use the CRF one if you have the CRF motor.

[miles Machine]

Depends on what year trx and crf u have

2006 and below crf's had 40mm fcr carbs

2007-2008 crf's have a 41mm fcr mx carb

2006-up 450r's have a 40mm fcr carb

all the above have the ability to change the leak jet(adjust the accelerator pump)

2004-2005 had a 42mm carb without the ability to change the leak jet.

and the 2009 crf's are efi

Hope this helps

[400exMO]

I have a 03 crf carb and it is a flat slide. I also had an 05 trx carb, it had a conventional slide.