Swapping out Suntour XCM to rigid carbon fork

flight996

I have a Trek 3900 disc 26er hardtail that I use primarily for touring (yes really). The forks, Suntour XCM are ineffective and are just baggage. They are 1 1/8" straight tube with Avid BB7s.
I am considering swapping to an inexpensive rigid carbon fork.
Before I go ahead and purchase a set of generic Chinese carbon forks:
(1) are there any pre-purchase traps I should be aware of, and
(2) I assume I cut the new steerer tube exactly the same length as the existing one.
Thanks in advance

mully79

Make sure theyre "suspension corrected" so the bike sits the same as before.
Check calliper fitment ( you may need an adapter)
You may not have to cut it. depends on steerer length but you may need more/less/thicker/thinner headset spacers.

flight996

Thanks mully79
Suspension corrected (check)
Brake bosses (check)
An extra spacer or two is a great idea. Lower back and scapular will love a more upright riding position.
Cheers

careca78

I did something similar with a Trek 8500 26in frame I got from warranty after cracking my Trek 6000 head tube (from having a WAAAAYYY longer fork than the original), and bought an Exotic aluminium fork, but this time geometry corrected...

They also have carbon options, with straight steerer tubes, for discs and V-brakes, etc.

Check their website: https://www.carboncycles.cc/index.php?s=0&