SCARPA Maestrale RS 4.0 Boot
For a fresh hot take on the venerable Maestrale RS, the 4.0 model is redesigned with a more planet-friendly twist and different fit than its predecessor. Consistent with its environmental objectives, SCARPA is increasingly using materials made from renewable resources throughout its product lines. In this case, the cuff and shell are constructed with materials derived from castor oil, resulting in a boot that’s more sustainable to manufacture. Rest assured, these materials don’t cut corners and have allowed SCARPA to produce a Maestrale RS with the performance and durability of its predecessors whilst keeping its weight down. A confidence-inspiring set of 3 buckles combine to hold your foot in place and a dynamic power strap from Booster tops it off for a powerful and progressive skiing platform. Of course, it wouldn’t be a Maestrale without the generous range of motion and convenient ski/walk mechanism that the Maestrale is known for. With the RS 4.0, SCARPA is continuing its tradition of impeccably made ski boots that perform like the high-end Italian product they are.
- Carbon-infused Grilamid BIO and Pebax Rnew construction are more environmentally friendly without sacrificing performance.
- Speed MLT ski/walk mechanism is easy to use and allows for excellent power transfer.
- Wave Closure system securely wraps the foot for increased performance.
- HRS ankle strap keeps the heel locked down and not moving.
- The power strap has all the features you’ll ever need: it’s a dynamic elasticized cam-lock beauty made by Booster.
- Intuition Pro Flex liner is moldable and supportive.
- Made in Italy
| Specifications | |
|
Weight |
1441g [27] 1533g [27.5] |
| Weight (pair) | 2882g [27] 3066g [27.5] |
|
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3 + Power Strap |
|
Boot Sole |
290mm [24.5/25.0] 299mm [25.5/26.0] 308mm [26.5/27.0] 316mm [27.5/28.0] 324mm [28.5/29.0] 333mm [29.5/30.0] 341mm [30.5/31.0] 350mm [31.5/32.0] |
|
Binding |
Tech, Hybrid, ISO 9523 |
|
Cuff |
61° |
|
Forward |
14°, 16°, 18° |
| Specs Verified | Yes |
| Design | |
|
|
Grilamid BIO w/ Carbon Core shell, Pebax R-New w/ Carbon Core cuff, Pebax tongue |
|
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Intuition Pro Flex Performance |
|
|
Vibran Cayman LT (ISO 9523) |
| Skimo Co Says | |
| Usage | Free touring and everyday backcountry use |
| Notes | Most powerful Maestrale yet with eco-friendly construction throughout the entire boot |
| Bottom Line | Do-it-all boot for anything and everything backcountry |
| Compare to other Freeride Boots | |
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Questions & Reviews
I've been using this boot all winter for powder skiing in the WA Cascades, and it is great. Plenty of power, smooth low-friction walking, and a good fit for me with fairly ordinary feet. I run them with the max forward lean, which still feels fairly upright. I usually take a size 29 boot in other brands and went with 29.5/30 in this one (feet are US 13 in most shoes). My main gripe is the external walk mode is very prone to icing. I started carrying a small toothbrush to brush snow out of the mechanism. I also have not been able to skin uphill with the ankle strap closed, because this narrows the boot to the point that my ankle bones rub. However, it's a simpler transition to just open that and the upper buckle for walking. I have detected a small amount of play in the cuff pivots at this point, but probably nothing to worry about.
Comment on this review:
3/16/2025
Is there any difference in the cuff of the 4.0 vs the 3.0? I have a hard time getting the 3.0 snug enough.
3/18/2025
Hi Nat,
Trying them back-to-back in the closest sizes possible (25 4.0 and 26 3.0), I find that I dial them up to similar buckle tensions to get the same fit. The cuffs are different, and redesigned in the new boot, but I do not think the new boot is dramatically tighter or looser for the same buckle tension. The liner is a bit thicker and more supportive, and overall, the 4.0 is stiffer and flexes more progressively.
Trying them back-to-back in the closest sizes possible (25 4.0 and 26 3.0), I find that I dial them up to similar buckle tensions to get the same fit. The cuffs are different, and redesigned in the new boot, but I do not think the new boot is dramatically tighter or looser for the same buckle tension. The liner is a bit thicker and more supportive, and overall, the 4.0 is stiffer and flexes more progressively.
Answer this question:
I had a pair of the Maestrale RS 3.0s prior to this pair and they've only gotten better. The power strap is significantly improved with more progressive flex and the top buckle also improved with the recent update. Overall, this is a stiff boot that will charge as hard as most mortals want to in the backcountry and it does it at a respectable weight. The heel retention strap is a game changer for both up and downhill. I started using them as my resort boots last season and they've been solid inbounds as well. Highly recommend if you're coming from in-bounds and want a real touring boot that will ski really well.
Comment on this review:
2/10/2025
Hey there, I currently ride the Maestrale 2.0 in a size 26. They fit well. Will I be the same size 26 with the 4.0? These puppies ain't cheap, so I want to make sure I get the right size. Thanks!
2/10/2025
Hi Dwight,
It is possible that you will need to size down to a 25 in the new Maestrale to get a similar length! The shell does run a full size big. However, you should note that the Maestrale 4.0 is a completely different fit with a lower instep volume, so the correct size (for length) in the new Maestrale may feel too tight in some other dimensions. We would recommend filling out our boot fitter to go more into depth in finding a boot that might work for you!
It is possible that you will need to size down to a 25 in the new Maestrale to get a similar length! The shell does run a full size big. However, you should note that the Maestrale 4.0 is a completely different fit with a lower instep volume, so the correct size (for length) in the new Maestrale may feel too tight in some other dimensions. We would recommend filling out our boot fitter to go more into depth in finding a boot that might work for you!
Answer this question:
1/2/2025
Hey Folks,
I recently tried on a 2025 Maestrale RS size 27. I have very flat/low-volume feet with a last width of around 100mm. The width in these boots seemed good; it didn't feel as wide as the stated last of 102. But the fit felt best to me, with the thickest foam spacer included under the liner.
Is the liner in the 26.5 noticeably thicker? A footbed will take up some space, but I don't want to start adding foam and filling space in the shell for a good fit in a new boot if I can avoid it.
Is there another wide-ish, low-volume touring boot you recommend I check out?
Best,
-Brian S.
I recently tried on a 2025 Maestrale RS size 27. I have very flat/low-volume feet with a last width of around 100mm. The width in these boots seemed good; it didn't feel as wide as the stated last of 102. But the fit felt best to me, with the thickest foam spacer included under the liner.
Is the liner in the 26.5 noticeably thicker? A footbed will take up some space, but I don't want to start adding foam and filling space in the shell for a good fit in a new boot if I can avoid it.
Is there another wide-ish, low-volume touring boot you recommend I check out?
Best,
-Brian S.
1/2/2025
Hi Brian, Scarpa tends to premold the half size liners, so the 26.5 may feel slightly snugger out of the box. But after a heat mold, a 26.5 and 27 are the same liner, and the 26.5 and 27 are the same shell. If you needed to take up a lot of volume, different boots might be the better option. Our Boot Fitter is the best place to start a conversation.
Answer this question:
11/20/2024
Do you think they’ll offer that new Booster power strap a la carte?
11/20/2024
Hi, we're unlikely to carry them at any point. Not much reason to go with those over a standard Booster, much more room for customization with those. If you do want the stock SCARPA strap, shoot us an email at help@skimo.co and we can see if we can special order one.
Answer this question:
11/14/2024
Dear SkiMo: Just to clarify, if your sizing in the RS 3.0 was 28.5, do your recommend downsizing to 27.5 for the RS 4.0? Or is the downsizing only necessary going from a Quattro to an RS 4.0? THANK YOU!
11/14/2024
Hi David,
In some cases, we would recommend downsizing, but not universally. It depends on how tight your fit was in the old RS 3.0. If the old 3.0 was a performance fit for you, the new one in a size down would likely be a little too small. In the same size, it will be a little bigger. So you choose - you can go up a little or down a little in length.
It is important to note that the RS 4.0 fits completely differently to the RS 3.0, in more ways than just length. Notably, it is lower volume, and the toe box is a bit wider.
In some cases, we would recommend downsizing, but not universally. It depends on how tight your fit was in the old RS 3.0. If the old 3.0 was a performance fit for you, the new one in a size down would likely be a little too small. In the same size, it will be a little bigger. So you choose - you can go up a little or down a little in length.
It is important to note that the RS 4.0 fits completely differently to the RS 3.0, in more ways than just length. Notably, it is lower volume, and the toe box is a bit wider.
Answer this question:
10/13/2024
Hi, I wondered about the differences between the Maestral RS and this year's Quattro Pro. I feel as if they are both categorized as "free touring" boots and somewhat pretty similar in flex/weight. The reported range of motion is also pretty similar. Why would someone go for a Maestral Rs or a Quattro Pro other than the fit?
10/14/2024
Hi Edward,
The primary difference between the Quattro Pro and the current Maestrale RS would be flex and downhill/uphill performance. The Maestrale has a more touring-optimized buckle setup that should allow for easier transitions and weighs a bit less. The Quattro Pro is stiffer-flexing and more supportive, with a beefier liner and a stronger locking mechanism. It is meant for the most aggressive skiers.
Between the two boots, the fit of the shell is actually identical. The difference is that the Maestrale RS runs one full size larger than the Quattro Pro. For most people, we recommend your usual Scarpa size in the Quattro for a performance fit, and one full size down in the Maestrale to achieve the same. So for example, I would choose a 26 Quattro, and a 25 Maestrale for the same fit.
The primary difference between the Quattro Pro and the current Maestrale RS would be flex and downhill/uphill performance. The Maestrale has a more touring-optimized buckle setup that should allow for easier transitions and weighs a bit less. The Quattro Pro is stiffer-flexing and more supportive, with a beefier liner and a stronger locking mechanism. It is meant for the most aggressive skiers.
Between the two boots, the fit of the shell is actually identical. The difference is that the Maestrale RS runs one full size larger than the Quattro Pro. For most people, we recommend your usual Scarpa size in the Quattro for a performance fit, and one full size down in the Maestrale to achieve the same. So for example, I would choose a 26 Quattro, and a 25 Maestrale for the same fit.
Answer this question:
7/29/2024
What is the weight for one 26.0 shell?
7/29/2024
Hayden, This one is 1171g. The liner is only 4g more then the Skorpius liner, not much difference in liner weights.
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4/2/2024
Hi, just got a pair of size 31 F1 GT that fit me better than any other boot. Maybe I'm still in the honeymoon phase, but I'm wondering if other scarpa models would work for me as my freeride boot. For me, the 31 was a size-up because I heard the F1 GT/LT/XT all run a bit short. Typically I've fit into size 29 in Fischer and Dynafit touring boots, although my feet have changed slightly over the years. I know the answer to fit questions is to try them on and shell fit, BUT do you think the 29.5/30 new Maestrale would fit similar to the 31 F1 GT?
Thanks
Thanks
4/2/2024
Kam, Different Scarpa boots have different fits. The F1 LT/GT/XT , have Scarpa sizing, which is different, but don't really run short. They are narrow and pointy toed. So you went a size big, so guessing your foot is a bit wide for the correct size. The Maestrale boots are wider, so in the size 29.5/30 could be just right for you.
4/23/2024
Comments in the thread by Hayden below seem to indicate that this boot runs long (the clog is one size larger than the equivalent size of Quattro), although it has a thick liner.
I did not size up in the F1 GT for width but for length. My feet measure US 13
I did not size up in the F1 GT for width but for length. My feet measure US 13
4/29/2024
Got into a pair of this boot in the size 29.5/30 and can confirm they fit about the same as the 30.5/31 F1 GT
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3/28/2024
Does this boot share all the infuriating aspects of the Quattro? Walk mode that shears in half, clicky annoying tongues, soft plastic that warps, etc?
3/29/2024
Hi Brett,
There are some similarities between the 4.0 Maestrale and the Quattro, namely the fit, but also the tongue - it is the same style tongue that needs to be tucked in under the cuff. I do think it is a little easier on the Maestrale than the Quattro, because the front of the cuff is smaller and easier to work with. The two boots use different plastics as well.
We have not seen any broken walk levers/shells in the Maestrale RS 4.0! It seems to be a pretty sturdy boot.
There are some similarities between the 4.0 Maestrale and the Quattro, namely the fit, but also the tongue - it is the same style tongue that needs to be tucked in under the cuff. I do think it is a little easier on the Maestrale than the Quattro, because the front of the cuff is smaller and easier to work with. The two boots use different plastics as well.
We have not seen any broken walk levers/shells in the Maestrale RS 4.0! It seems to be a pretty sturdy boot.
4/4/2024
brett,
the walk mode its different, not the same lever. It also is a lot less faffy to get into. the receiving pin area that was breaking on people has been beefed up, its 24mm of material width now as opposed to 19. the flex is subtly softer but not much. scarpa has responded to most of your concerns with next years quattro pro. More cuff material that covers the tongue more, beefed up receiving pin area, beefier liner 130+ flex. Id imagine the annoyingness to get on is the same though. I havent experienced warping plastic so unsure on that regard.
the walk mode its different, not the same lever. It also is a lot less faffy to get into. the receiving pin area that was breaking on people has been beefed up, its 24mm of material width now as opposed to 19. the flex is subtly softer but not much. scarpa has responded to most of your concerns with next years quattro pro. More cuff material that covers the tongue more, beefed up receiving pin area, beefier liner 130+ flex. Id imagine the annoyingness to get on is the same though. I havent experienced warping plastic so unsure on that regard.
Answer this question:
3/10/2024
Does this version of the Maestrale have a full length boot board?
3/12/2024
Hi Ash! The boot board runs the full length. Thanks!
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What a time to be alive. So many great boots! Firstly, the asterisk that states this boot maintains a similar shape to the previous maestrale is just wrong. Ignore that. This boot is molded off the Quattro, and is way lower volume than previous maestrale. It walks great like the Quattro, has one more upright setting of lean, and the bsl's are just bumped up one size from the Quattro. The liner is beefier than Quattro and the buckles are way less annoying. The flex is progressive and stuff. The Quattro is very stiff and scarpa says is 130 flex. The RS is stated to be 125. I think that the flex difference is indistinguishable and any variation can boil down to how it's buckled. The video linked in comments below is mine for people curious about other differences between maestrale and Quattro. This boot is powerful and walks great. I find scarpas support/flex to be more than comparables, ie, I find this boot more supportive than the zero g tour pro, and vastly stronger than the atomic xtd 120. Overall if it fits you it's definitely top of its class.
As always try boots on, the best featured boot that doesn't fit well is useless.
As always try boots on, the best featured boot that doesn't fit well is useless.
11/3/2024
Hey Anthony-did you find the fit to feel identical to the Quattro? I’ve run that boot for a full season, even on huge uphill days. I’m looking forward something a little more balanced-but I need an extremely low volume fit.
Thanks!
Thanks!
11/3/2024
Scarpa states a wider last. Hard to tell for me as discussed it is essentially the next shell size up. If I had to guess for the same shell bsl it might be a proportionally a smidge bigger. The Quattro is about as low volume as it gets.
11/4/2024
Got it. I just tried them on in my local ski shop here in WA. They fit pretty much identically if I size according to BSL. But the Quattro SL ROM is 95% as good as the Maestrale, and skis way better. I wish it didn’t have a gripwalk sole, but that’s not enough to go buying a new boot for!
Comment on this review:
1/10/2024
How does the fit compare more directly to the RS 3.0? I've seen a number of reviews on fit comparing to the Quattro, and of course have noticed that the last is +1mm wider, but any adjustments to the shape?
I've found one comment about improved heel hold, which is encouraging as that is my primary issue with the fit of the 3.0 and 2.0
I've found one comment about improved heel hold, which is encouraging as that is my primary issue with the fit of the 3.0 and 2.0
1/10/2024
Hi Fisher,
The fit of this boot is very similar to the Quattro, but larger, for the same mondo size. We believe they are molded from the same last. Compared to the older Maestrale 3.0, this means less volume on top of the foot, and a narrower mid-foot and heel area. The forefoot may be a bit roomier laterally, but is certainly lower volume vertically. But for the same mondo size the new Maestrale may also feel slightly bigger. If your primary issue is heel hold, it might be worth trying the new boot as it has been reworked substantially!
The fit of this boot is very similar to the Quattro, but larger, for the same mondo size. We believe they are molded from the same last. Compared to the older Maestrale 3.0, this means less volume on top of the foot, and a narrower mid-foot and heel area. The forefoot may be a bit roomier laterally, but is certainly lower volume vertically. But for the same mondo size the new Maestrale may also feel slightly bigger. If your primary issue is heel hold, it might be worth trying the new boot as it has been reworked substantially!
Answer this question:
12/25/2023
Hi! BSL +2mm compared to the 3.0 version. Is it an longer internall?
With 27cm feet (more like 26.8 with footbed aupport I should belong in 26.5/27 shells, right? Thanks!
With 27cm feet (more like 26.8 with footbed aupport I should belong in 26.5/27 shells, right? Thanks!
12/26/2023
Daniel, The BSL is the length of the outside of the boot. It doesn't have any bearing on the internal size of the boot.
So if you were a 26.5/27 in another Scarpa boot, yes, I would go with it again.
So if you were a 26.5/27 in another Scarpa boot, yes, I would go with it again.
Answer this question:
12/18/2023
I see that the BSL numbers on these seem to correspond to the Quattro, but shifted one shell size down. Does this mean if I fit well in a 27.0 Quattro, that I could potentially fit into a 26.0 Maestrale RS?
Obviously this always depends on the individual's foot size and shape, but I'd like to know if they have a similar internal length.
Obviously this always depends on the individual's foot size and shape, but I'd like to know if they have a similar internal length.
12/18/2023
Hi Hayden! BSL refers to the measurable length of the outer sole and not the actual fit of the boot. In this case specifically, there is more material used in the lower of the Quattro when compared to the Maestrales resulting in the higher BSL value. Mondo size is the measurement that pertains to fit. In regards to length only, if you found a good fit in a 27 in a SCARPA boot, you'd likely find a good fit in a 27 in other SCARPA boots. The overall fits do differ between the Quattro and Maestrales. If you have any further questions, send us an email at help@skimo.co and we'd be happy to dive in!
12/19/2023
Hi Niko, I think you may have misunderstood my original question. According to the skimo website (and the boots I own at home) the 27.0 Quattro has a 299 BSL. The 27.0 Maestrale is listed here as 306. So the Maestrale is actually the longer one. That said, the 26.0 Maestrale also has a 299 BSL, like the 27.0 Quattro. I heard a rumor that Scarpa is using the same last as the Quattro in the Maestrale, just sized up for a more comfort fit.
12/23/2023
I concur with Hayden.
When doing a shell fit, I find that the gap behind my heel more closely corresponds with BSL and not mondo. Thus, in the case of these two boots, the BSL is a better indicator of internal length than Mondo.
When doing a shell fit, I find that the gap behind my heel more closely corresponds with BSL and not mondo. Thus, in the case of these two boots, the BSL is a better indicator of internal length than Mondo.
12/26/2023
Hayden and Kyle,
You are correct with the bsl difference between the Maestrale and Quattro. I apologize, my mistake. In general however, BSL is a not an indicator of fit. Take this boot in a size 24.5/25 for example. Folks who feet measure 29cm or 290mm (the BSL of a 24.5/25) in length would find this size ~4cm too short. I apologize for any confusion with my mixup! Thanks.
You are correct with the bsl difference between the Maestrale and Quattro. I apologize, my mistake. In general however, BSL is a not an indicator of fit. Take this boot in a size 24.5/25 for example. Folks who feet measure 29cm or 290mm (the BSL of a 24.5/25) in length would find this size ~4cm too short. I apologize for any confusion with my mixup! Thanks.
1/6/2024
Images below of a 26 4Quattro and the 25 Maestrale RS 4.0 (both with BSL of 290mm). The 4 Quattro is the best-fitting boot I've had (custom footbed, no heat mold required - 50+ days touring on them and no issues with the liners packing out) so naturally I went down the same rabbit hole with the new Maestrale boot. I shell fit the 26 and the 25 in the Maestrale and found the 25 fits almost identically as my 26 4Quattro. The liner on the Maestrale is more substantial (thicker and warmer) than the 4Quattro but after two tours in the new boots, It's been pretty tight, but I'm going to hold off heat molding these as well.
I found this video online to be helpful before I pulled the trigger:
https://www.youtube.com/watch?v=7aMCQesBgBs&t=4s
There is quite a bit of redundancy in having both boots, but for me the 4Quattro is a great option for the resort (with kids) and for traveling with one pair of boots, while the Maestrale will be purely for touring/ski mountaineering.
Hope this is helpful.
I found this video online to be helpful before I pulled the trigger:
https://www.youtube.com/watch?v=7aMCQesBgBs&t=4s
There is quite a bit of redundancy in having both boots, but for me the 4Quattro is a great option for the resort (with kids) and for traveling with one pair of boots, while the Maestrale will be purely for touring/ski mountaineering.
Hope this is helpful.
1/6/2024
Hello Everyone.
Some good discussion here. Certainly some learning for me too with these new boots. After some deeper investigation, it appears the lowers of both the new Maestrale and Quattro are molded off the same plug. That is where the similarity of these boots end however. They have different liners, plastic, buckles, etc. This is also somewhat of an an anomaly when it comes to sizing based off mondo. In regards to length alone, if you find a good fit in a 27 SCARPA boot, you may find a good fit in a 26 in the Maestrales. Again I apologize for any confusion and thanks for sparking some research!
Some good discussion here. Certainly some learning for me too with these new boots. After some deeper investigation, it appears the lowers of both the new Maestrale and Quattro are molded off the same plug. That is where the similarity of these boots end however. They have different liners, plastic, buckles, etc. This is also somewhat of an an anomaly when it comes to sizing based off mondo. In regards to length alone, if you find a good fit in a 27 SCARPA boot, you may find a good fit in a 26 in the Maestrales. Again I apologize for any confusion and thanks for sparking some research!
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10/30/2023
It looks like the RS 4.0 does not have leash attachments? Thanks!
10/30/2023
Hi Tomas,
You are correct, no dedicated leash attachments. You could clip a leash to a buckle or install something, or use a wrap-around leash that clips to itself. But no specific attachment for leashes from the factory.
You are correct, no dedicated leash attachments. You could clip a leash to a buckle or install something, or use a wrap-around leash that clips to itself. But no specific attachment for leashes from the factory.
Answer this question:
10/5/2023
Do you happen to know the BSL for size 29?
10/6/2023
Hi Chris, the size 29 has a BSL of 324mm. We've just measured our new stock and updated the specs for all sizes.
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10/4/2023
How does this compare to the Zero G in overall stiffness/power? I noticed the cuff height is about a full inch lower than the Zero G on both sides and the back, wondering how much of an impact that has.
10/4/2023
Hi Justin! Thanks for writing in. You're right, the cuff heights do differ. In this case and in terms of how much of an impact that has, it'll depend. Depends on one's own body anatomy, skiing technique, and overall preference. In a broad generalization, a taller cuff height does often lend to more support to a certain degree. With these two boots at hand however, it would likely be difficult to tell a notable difference. Now for stiffness/power, the Zero G is going to more closely resemble a traditional alpine boot giving it the edge in downhill performance. Evaluating stiffness alone, they are quite similar. The Zero G does have a touch more progressive nature to its flex pattern. Regardless both boots are exceptional downhill performers. It is important to note that these boots have different fits. If you're curious which one may be a better fit for you, fill out our
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