Yes you can. If you can find a good leather guy/girl who works on race suits. I wouldn't just take it to any old dude who makes chaps in his barn. A crappy seam will end up breaking and make the entire jacket pointless. If you can find someone local who has done this kind of work I'd say go for it - you want a snug fitting jacket, otherwise it's gonna flop all over when you crash and not do its job. I'd suggest looking for the local racer forums/community and asking who they use.
Edit: oops, just noticed you mention it's a textile jacket. Hopefully my response still applies, but it might be a little trickier finding someone to work with textile who's familiar with bike gear.
Last edited by Tekime; 10-10-2016 at 03:50 PM.