Hello fellow Roubaix owners, i here call for a vs post from you! (once comparison can be asserted!)

It seems the sl3 was a one run thing. if you go to the specialized site you'll notice the choice is either sl4 or sl2.

I currently ride an sl3, and love it. the sl4 looks sexy.

Is that the SL3 in your avatar? Looks pretty sweet.

1965 Moulton 4-speed, imported by Huffy to USA, a very cool commuter bike.

My sl3

The SL4 is one better than the SL3.

Basically this is what I've heard though you were being sarcastic. Stiffer, a bit more compliant, and heard a bit lighter but can't confirm that

You can find probably find more owners here. Specialized must be doing something right if they can convince customers that they need to upgrade their $2500 frames every year or two...

Cant speak about the sl3 but my sl4 is fantastic! Dont know how it compares to an s works though. I might think that the sl4 has a similar compound to the s works sl3 being the 10r.

the r's are the same on the sl3 and sl4, s-works is 11r. I can attest the difference between 10r and 11r is mostly weight

i suspect a lot has happened to the roubaix (manufacturing). The 2011 sl2's was a trickle down from 2010 s-works. Then mid year, sl3 hits the road. The sworks being 11r and BB30. 2012 arrives SL4, and SL2 is still rolling.

IMO this could mean speacialized is moving to a different manufacturing model, fast redesign.

I like the Moulton.