The Giro Radix Mips helmet is a high-quality mountain bike helmet from the renowned Giro brand. Offering superior protection and unrivalled comfort, this helmet is an ideal choice for mountain bike enthusiasts looking for reliable, high-performance equipment. Designed with quality materials, the Giro Radix Mips helmet offers optimum protection against shocks and impacts during your mountain biking outings. Its polycarbonate outer shell is combined with an EPS foam lining, offering maximum resistance in the event of a fall or collision. Thanks to integrated Mips technology, this helmet offers additional protection against rotating impacts, ensuring optimum safety for your head. What's more, the release strap rapide allows a perfect fit to your head for personalized comfort throughout your ride. In addition to outstanding safety, the Giro Radix Mips helmet also offers unrivalled comfort. Its ventilation system ensures optimum air circulation to keep your head cool and dry, even on the hottest days. What's more, its lightweight, aerodynamic design gives you a feeling of lightness and freedom as you ride your mountain bike. The design of the Giro Radix Mips helmet is both elegant and functional. Its bright colors and clean lines make it a must-have accessory for mountain bikers. What's more, its removable visor lets you adapt it to your preferences, whether you're riding on sunny trails or in darker conditions. Whether you're an experienced cyclist or a beginner, the Giro Radix Mips helmet is the ideal choice for optimum protection and comfort during your mountain biking outings. So don't wait any longer, get your hands on this top-quality helmet now and set off on your adventure in complete safety!
The Giro Radix Mips helmet is a high-quality mountain bike helmet from the renowned Giro brand. Offering superior protection and unrivalled comfort, this helmet is an ideal choice for mountain bike enthusiasts looking for reliable, high-performance equipment. Designed with quality materials, the Giro Radix Mips helmet offers optimum protection against shocks and impacts during your mountain biking outings. Its polycarbonate outer shell is combined with an EPS foam lining, offering maximum resistance in the event of a fall or collision. Thanks to integrated Mips technology, this helmet offers additional protection against rotating impacts, ensuring optimum safety for your head. What's more, the release strap rapide allows a perfect fit to your head for personalized comfort throughout your ride. In addition to outstanding safety, the Giro Radix Mips helmet also offers unrivalled comfort. Its ventilation system ensures optimum air circulation to keep your head cool and dry, even on the hottest days. What's more, its lightweight, aerodynamic design gives you a feeling of lightness and freedom as you ride your mountain bike. The design of the Giro Radix Mips helmet is both elegant and functional. Its bright colors and clean lines make it a must-have accessory for mountain bikers. What's more, its removable visor lets you adapt it to your preferences, whether you're riding on sunny trails or in darker conditions. Whether you're an experienced cyclist or a beginner, the Giro Radix Mips helmet is the ideal choice for optimum protection and comfort during your mountain biking outings. So don't wait any longer, get your hands on this top-quality helmet now and set off on your adventure in complete safety!
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Giro Radix MIPS MTB Helmet - XL/61-65cm - Matte Black
The Giro Radix Mips helmet is a high-quality mountain bike helmet from the renowned Giro brand. Offering superior protection and unrivalled comfort, this helmet is an ideal choice for mountain bike enthusiasts looking for reliable, high-performance equipment. Designed with quality materials, the Giro Radix Mips helmet offers optimum protection against shocks and impacts during your mountain biking outings. Its polycarbonate outer shell is combined with an EPS foam lining, offering maximum resistance in the event of a fall or collision. Thanks to integrated Mips technology, this helmet offers additional protection against rotating impacts, ensuring optimum safety for your head. What's more, the release strap rapide allows a perfect fit to your head for personalized comfort throughout your ride. In addition to outstanding safety, the Giro Radix Mips helmet also offers unrivalled comfort. Its ventilation system ensures optimum air circulation to keep your head cool and dry, even on the hottest days. What's more, its lightweight, aerodynamic design gives you a feeling of lightness and freedom as you ride your mountain bike. The design of the Giro Radix Mips helmet is both elegant and functional. Its bright colors and clean lines make it a must-have accessory for mountain bikers. What's more, its removable visor lets you adapt it to your preferences, whether you're riding on sunny trails or in darker conditions. Whether you're an experienced cyclist or a beginner, the Giro Radix Mips helmet is the ideal choice for optimum protection and comfort during your mountain biking outings. So don't wait any longer, get your hands on this top-quality helmet now and set off on your adventure in complete safety!
The Giro Radix Mips helmet is a high-quality mountain bike helmet from the renowned Giro brand. Offering superior protection and unrivalled comfort, this helmet is an ideal choice for mountain bike enthusiasts looking for reliable, high-performance equipment. Designed with quality materials, the Giro Radix Mips helmet offers optimum protection against shocks and impacts during your mountain biking outings. Its polycarbonate outer shell is combined with an EPS foam lining, offering maximum resistance in the event of a fall or collision. Thanks to integrated Mips technology, this helmet offers additional protection against rotating impacts, ensuring optimum safety for your head. What's more, the release strap rapide allows a perfect fit to your head for personalized comfort throughout your ride. In addition to outstanding safety, the Giro Radix Mips helmet also offers unrivalled comfort. Its ventilation system ensures optimum air circulation to keep your head cool and dry, even on the hottest days. What's more, its lightweight, aerodynamic design gives you a feeling of lightness and freedom as you ride your mountain bike. The design of the Giro Radix Mips helmet is both elegant and functional. Its bright colors and clean lines make it a must-have accessory for mountain bikers. What's more, its removable visor lets you adapt it to your preferences, whether you're riding on sunny trails or in darker conditions. Whether you're an experienced cyclist or a beginner, the Giro Radix Mips helmet is the ideal choice for optimum protection and comfort during your mountain biking outings. So don't wait any longer, get your hands on this top-quality helmet now and set off on your adventure in complete safety!
The lowest price for Giro Radix MIPS MTB Helmet - XL/61-65cm - Matte Black right now is $175.99 at Techinn.com.
The all-time low was $173.95 on 26 Jan 2026 — today's price is 1% above the lowest ever. This is at or near its all-time low — a good time to buy.
Prices last updated 24 Feb 2026.
Last updated at 24/02/2026 09:47:43
Giro Radix Mips Mtb Helmet Black XL GIRCA030044K001 MATTE BLACKXL (61-65)
Delivery $29.99
originally posted on ebay.com
Very difficult to find a helmet if you have a large skull or heaps of hair. Tried 3 other brands and their XL or XXL was no different to a Large. The Giro Radix is really an XXL size compared to other brands. Lightweight, great in hot weather and has adjustable ratchet knob to tighten or loosen the part the sits on your head. The only negative is I could only find it in black.
originally posted on Terry Bicycles
This is the most comfortable helmet I have ever owned. Padding inside is soft. Tightens easily with one hand from the back. The visor is very handy and eliminates the need for a brimmed hat which is great in the heat. I love the color and have gotten many compliments.
originally posted on REI
I wear Smith helmets for skiing so I tried a couple of those when it came to buying a half-shell MTB helmet. Although they met my expectation of quality, they did not fit my head well. Notably, I shave my head, and the MIPS "nubs" in Smith's helmets felt like they were raw, hard plastic just resting on my skull. It was painful to wear just casually let alone taking an impact.By contrast, the Giro Radix slipped right onto my head and the difference in fit / comfort was night and day. I was right in the range for MD and a MD fit perfectly with some room for adjustment in both directions. The helmet is extremely light and breezy and I forget it's on my head moments after it's on.Zero complaints with this one. Price is right too. Would buy another right away if I ... MoreI wear Smith helmets for skiing so I tried a couple of those when it came to buying a half-shell MTB helmet. Although they met my expectation of quality, they did not fit my head well. Notably, I shave my head, and the MIPS "nubs" in Smith's helmets felt like they were raw, hard plastic just resting on my skull. It was painful to wear just casually let alone taking an impact.By contrast, the Giro Radix slipped right onto my head and the difference in fit / comfort was night and day. I was right in the range for MD and a MD fit perfectly with some room for adjustment in both directions. The helmet is extremely light and breezy and I forget it's on my head moments after it's on.Zero complaints with this one. Price is right too. Would buy another right away if I damaged this one.
Giro Radix Mips Mtb Helmet Black XL GIRCA030044K001 MATTE BLACKXL (61-65)
Delivery $29.99
Very difficult to find a helmet if you have a large skull or heaps of hair. Tried 3 other brands and their XL or XXL was no different to a Large. The Giro Radix is really an XXL size compared to other brands. Lightweight, great in hot weather and has adjustable ratchet knob to tighten or loosen the part the sits on your head. The only negative is I could only find it in black.
This is the most comfortable helmet I have ever owned. Padding inside is soft. Tightens easily with one hand from the back. The visor is very handy and eliminates the need for a brimmed hat which is great in the heat. I love the color and have gotten many compliments.
I wear Smith helmets for skiing so I tried a couple of those when it came to buying a half-shell MTB helmet. Although they met my expectation of quality, they did not fit my head well. Notably, I shave my head, and the MIPS "nubs" in Smith's helmets felt like they were raw, hard plastic just resting on my skull. It was painful to wear just casually let alone taking an impact.By contrast, the Giro Radix slipped right onto my head and the difference in fit / comfort was night and day. I was right in the range for MD and a MD fit perfectly with some room for adjustment in both directions. The helmet is extremely light and breezy and I forget it's on my head moments after it's on.Zero complaints with this one. Price is right too. Would buy another right away if I ... MoreI wear Smith helmets for skiing so I tried a couple of those when it came to buying a half-shell MTB helmet. Although they met my expectation of quality, they did not fit my head well. Notably, I shave my head, and the MIPS "nubs" in Smith's helmets felt like they were raw, hard plastic just resting on my skull. It was painful to wear just casually let alone taking an impact.By contrast, the Giro Radix slipped right onto my head and the difference in fit / comfort was night and day. I was right in the range for MD and a MD fit perfectly with some room for adjustment in both directions. The helmet is extremely light and breezy and I forget it's on my head moments after it's on.Zero complaints with this one. Price is right too. Would buy another right away if I damaged this one.
I've been mountain biking since the early 90's, and have owned a lot of bike helmets. Seemed about time to replace mine, and wanted to try a MIPS model.I saw an online review that said this helmet was well-vented, and it does seem to deliver in that respect. I was able to mount my older Cygolite Expilion light on it using the helmet mount kit, and also a "Take a look" helmet mirror on the visor with no issues (I ride roads sometimes on the way to the trails, and have some neck mobility issues from an old injury, hence the mirror).Fit is comfortable and adjustable. Side straps perfect as they were, no adjustment needed there. Seems to be a well thought out product.
My face is pretty narrow, but my head is relatively long front-to-back, and this is the first helmet I have owned in over 20 years of regular riding that feels comfortable and doesn’t look like a big balloon on top of my head. All my previous helmets would hurt and leave big indentations in my forehead while also being way too wide for me because they were more circular in shape. I genuinely thought bike helmets were just uncomfortable for everyone. This helmet must be closer to an oval, because it fits my head in every direction. No more pain, and I don’t dread putting my helmet on anymore. What a relief!
In 2014, I tried a Giro and didn't like the fit... Bell seemed like the best fit for my ovalish 58cm head, so I've been using the 2014 Bell Stoker. Finally time to replace it, so I tried whatever REI had in stock... Bontrager (medium was ok), Smith (medium way too tight, large way too big). Decided to order this Giro Radix in medium to try out and I'm really glad I did. The fit is not only better than whatever model Giro I tried on in 2014, but even better than my Bell Stoker, which now seems like it fits poorly compared to the Radix. Fits my head perfectly, the ventilation is much better than my Bell Stoker, and it's lower profile on my head. I was ready to shell out $150-200 for something that fit amazing and the Radix surprised me at this price point. Only thing ... MoreIn 2014, I tried a Giro and didn't like the fit... Bell seemed like the best fit for my ovalish 58cm head, so I've been using the 2014 Bell Stoker. Finally time to replace it, so I tried whatever REI had in stock... Bontrager (medium was ok), Smith (medium way too tight, large way too big). Decided to order this Giro Radix in medium to try out and I'm really glad I did. The fit is not only better than whatever model Giro I tried on in 2014, but even better than my Bell Stoker, which now seems like it fits poorly compared to the Radix. Fits my head perfectly, the ventilation is much better than my Bell Stoker, and it's lower profile on my head. I was ready to shell out $150-200 for something that fit amazing and the Radix surprised me at this price point. Only thing it doesn't have is a fancy magnetic buckle.
The last time i wore a helmet there was a Bush in office ;) My husband and our girls wear helmets on almost every ride. When i started joining them frequently on rides my husband bought me a helmet however i made sure it got lost in the move. Last year we started riding with my sisters family. As my brother in law is a neurologist and my sister is a nurse they are pretty serious about helmets. They casually asked where my helmet was on a ride but did not push the issue. This year they asked about taking a group ride tour of town in a few weeks and mentioned helmets were required. I was going to pass but instead decided it was time to get a helmet. I found the radix in red which matched my bike and ordered it in medium. When it came I slipped it on and was instantly ... MoreThe last time i wore a helmet there was a Bush in office ;) My husband and our girls wear helmets on almost every ride. When i started joining them frequently on rides my husband bought me a helmet however i made sure it got lost in the move. Last year we started riding with my sisters family. As my brother in law is a neurologist and my sister is a nurse they are pretty serious about helmets. They casually asked where my helmet was on a ride but did not push the issue. This year they asked about taking a group ride tour of town in a few weeks and mentioned helmets were required. I was going to pass but instead decided it was time to get a helmet. I found the radix in red which matched my bike and ordered it in medium. When it came I slipped it on and was instantly impressed with how well it fit and felt. Not heavy but comfortable and secure. On the first ride it did not move about on my head or i interfere with my sun glasses. After 20 miles i was sold. I am looking forward to many more rides with this helmet
The helmet is nice and light and fits well. It has very good ventilation. The description says the ‘visor features an adjustment mechanism that lets you move the visor up and down in indexed steps’. My Radix’s visor is adjustable but it isn’t indexed. I am concerned the visor my not hold it’s position once it gets worn in.
I've now changed over all my helmets to MIPS system to best protect our brains. This helmets is true to fit, easy to adjust, and offers nice ventilation. The price is right on as well. If I had one complaint, the visor is a bit small for us desert dwellers.
Overall I like the helmet. I think it is a good looking helmet with style when riding a mountain bike.Used it for trail biking in the woods, feels comfortable and well protected.Fits my head very well. The size adjustment is very smooth and and has good range tofit people head. I don't feel it causes any problem in hot day's biking as some people mentioned that MIPS helmet may make bikers feel hot.The visor is ok and could be better. I feel the visor is soft and I'd prefer it were mademore solid and stronger.
