A little tricky to install but totally possible. You must connect the middle piece (at the back of the head before connecting the side pieces. To connect that back piece you must turn it 90 degrees and really press hard to get the tiny plastic rectangle through the slot. You then turn it back to normal and the rest is very intuitive and easy.
Bad design. Broke 2 wheels in first month and 2 since trying to be careful. LBS says you're supposed to adjust it once and never touch it again. Uh huh. That might work for a pinhead, but not normal people who sometimes wear a hat underneath.
I'm sorry you've been having such bad luck with these. Please don't hesitate to get in touch with us at [email protected] so we can help you out with a replacement.
Plastic part snapped on the helmet and I looked to see if I could get the replacement part instead of shelling out $100 for a new helmet.
Made sure it was the same locking system (there are multiple types for Giro helmets so make sure) and removed and installed with little to no drama.
The hardest part was snapping the top part back into the helmet. I had to twist and push the tab in. Everything else was just carefully routing the straps through.
The design of the Giro Roc Loc 5 Retention System is poor. It does not take much for the back area to break apart and require replacement. Very poor design especially since it comes installed on $250 plus dollar helments. I would think Giro could get this right and design a retention system with more durability.
If your Roc Loc breaks like mine did - use cable ties until you get one of these. Snaps right in. Installation requires undoing the chin strap from one side so that you can thread it through the Roc Loc.
Unfortunately, I purchased this with the intention of upgrading the Loc 4 with this on a Atmos helmet. They are not designed to upgrade the retention system, only replace an existing Loc 5 restraint. Otherwise, the product is as advertised.