GiroRoc Loc 4 Retention System(Return to Product Page)

After years of use, my Roc Loc wasn't locking any more. I preferred to refurbish my helmet rather than replace it, so the RL4 was an ideal solution. It was easy to install and I now have a better-fitting helmet.

original and fast shipping low price.. thanks

Was looking for a new helmet because sweat deteriorated the original Roc Loc 4 system. Replaced with this part in a minute and have virtually a new helmet.

It brought some more life of the helmet.

I broke one of the support pieces on my Roc Loc and thought I would have to buy a new helmet (uugggg!) when I found this replacement online. It fit perfectly and only took a few minutes to replace...a no-brainer and much cheaper than a new helmet.

This was a hard to find part and the price can't be beat, check you existing helmet you may need this replacement after three years of heavey use.

I purchased the replacement Roc Loc 4 after eventually wearing out the original, and the replacement has been great as it is exactly what the helmet came with originally. I'd just like to warn people to take a close look at the picture before you buy, to make sure you're getting what you need. The upper plastic straps depicted actually attach to another length of plastic that then locks into the styrofoam of the helmet. This piece is not included, only what is shown in the picture. Giro really should have included that extra little piece because recently that broke on me.

When i noticed the retention strap on my helmet was wearing out, it was nice finding the part at BTD that i couldn't even find on the manufacturers website.

I used the Roc Loc 4 to replace mine, which had broken one of two fragile strips on the side connectors. If the other half had broken the helmet old not fit s securely. It attached easily and the helmet works as new.

purchased together with an Atmos pad kit

For 3 Ironman Events it has served me well, lots of saddle time 's lots of helmet wear. Here in FL.lots of humidity & hot weather do not help the plastic parts along, I sort of expect the wear to happen sooner than expected.Yes it is my head and for someone who has had their share of horrific spills head crashing to the ground I may only say thank you Giro for being their for me, for you are that close from maybe being brain dead. I continue to train and compete, for falling off a bicycle only means to get right back on and do it all over again.I am now shopping for a new helmet only because it is time to lay my current one to rest it has served me well but does need some interior parts so I will select a new helmet, my head is certainly one body part I would like to keep whole. Safe Riding Everyone..

I just found my atmos's retention system has one of the strip to the top is torn. It is good to find a replacement part instead of a new helmet purchase.

Well the design is excellent but the strips of plastic on the side deteriorate very fast, mine broke in one year of normal use.

Recently broke a piece of the Roc Loc on my Atmos helmet. Bought this as a replacement. Easy to install and made the helmet as comfortable as it was new. I should have refreshed this a couple of years ago.

No hassle fast delivery from Cycloross.com.

I am a big fan of my Giro Atmos, and was pretty bummed when the Roc Loc system broke. I imagine it was pressure put on my helmet pod that led to the breakage. This product was what I needed. Unfortunately it's harder to find now that the Roc Loc 4 system is being replaced by the Roc Loc 5. Cyclocross had the product and had it to me in a matter of days. It was easy to replace and fit perfectly. Now my helmet has some more life for another year or two! Great product, Excellent price, and great service! Very happy.

Exactly what I needed after my old one broke from getting worn out.

Bought this to replace the Roc Loc 4 in my Giro helmet. Fits perfectly, easy to install. No complaints at all. Much cheaper than replacing the helmet.

Fair price, fits well. Extends the life of your helmet.

Replaced broken part.

this works perfect exactly what I needed to save my helmet. the install was simple just take the old one out but the new one and you're ready to ride. I had a new helmet on order and canceled it once I put this in and realized my old helmet was just as good as new.