I have a 2004 Redline Moncog 26er languishing in my basement.

I want to use it a project bike to advance my mechanical skills, I would like to eventually like to upgrade everything but I am wondering if new wheels will give me a problem.

I am interested in any suggestions as to where I can find a descent pair of wheels for this thing:

It's my undertanding that the 2004 Monocogs used a 110mm rear hub spacing...is that the same as a BMX cruiser?

I've been googling 26" BMX wheels without much luck. What are my 110mm wheel options?

Did you hear it's 110mm spacing, or did you measure it yourself?

Any shop can build you a 26" rim on a BMX hub. Heck, that's one of the first wheels I built, 27 years ago. However, I agree with Jive: measure the distance between the dropouts. Judging by this photo, it could be 135mm:

Redline started spacing the Monocog rear to 135mm in 2005. The 2004 and earlier Monocogs had 110 spacing. You could always reuse your stock hub if it's in good shape, other wise you have three options for a disc hub and umpteen options if you want to continue using v-brakes. SBS should be able to dig up an old stock hub, have your bike shop give them a call. Profile makes 110 spaced disc hubs and Kore also makes them. The Profile & Redline hubs are 32 hole & the Kore is 36 hole. If you plan on using BMX hubs, make sure that they're 3/8 axle.

I'm planning on rebuilding my Monocog too, so I've been doing research for a while. I hope this helps.

You can use a flip-flop hub, they are 110mm and designed for single speed use. Nashbar has a pretty cheap set for about $35 each if you want to try a wheel build yourself.

Thanks for the replies.

I've actually been reading up on wheel building. I might give it a go.

If you are serious about advancing your mechanical skills, getting into the habit of measuring things for yourself is an excellent place to start.

Some is, some ain't. Sometimes 1 measurement is worth 1,000 guesses.