Mine is an Alu XL with Marzocchi 55Ti’s, hope hoops with Flow rims, tubes, Renthal DH bars and a Reverb dropper, and it comes in at 32lbs. I’d be thrilled with 29lbs I don’t think its worth compromising the way it rides to get it lighter thank that. Anything under 30lb is wonderful – I don’t think I’ve ever acheived it. It takes a lot of money to get under 30lbs I think.
That said I think I know how I could do it, Crossmax ST’s would save a lot of weight but I would want wider rims of the SLX which would reduce any possible saving, going tubeless would help too, as would replacing the SLX cranks with XTR’s and putting some lighter wide bars on, that would probably get me close. Not sure its worth it thought 🙂