First Ride: Zipp's New 1Zero HiTop Carbon Wheels

Oct 3, 2023 at 15:35
by Mike Kazimer  

Four years after rolling into the mountain bike world with their 3Zero Moto carbon wheels, Zipp is back with a new set of wheels aimed at the cross-country crowd. The 1Zero HiTop wheels have a unique rim profile that was designed with compliance in mind, in order to create a quick and comfortable wheelset for XC racing or general lighter-duty trail riding.

There are two versions, the HiTop SW and the HiTop S. Both use the same rim, but the SW model has lighter hubs and spokes, and it comes with the TyreWiz 2.0 tire pressure monitoring system. Claimed weight for the SW is 1325 grams, and the S is reported to weigh in at 1495 grams, although on my scale the SW wheels came in at 1361 grams, and that's without the TyreWiz valves or Centerlock lockring installed.

The wheels are light in the grand scheme of things, but for an XC wheelset they're not that light – for comparison, Roval's Control SL wheels are 1240 grams, and Bontrager's Kovee wheels are 1199 grams.

1Zero HiTop SW
• Wheel size: 29"
• Intended use: XC / light trail
• Hub: ZM2 SL hub, 66 points of engagement
• TyreWiz 2.0 included
• Weight: 1325 grams (claimed) / 1361 grams actual (without valve stems or Centerlock lockring)
• Lifetime warranty
• Price: $1925 USD

1Zero HiTop S
• Wheelsize: 29"
• Hub: ZM 900 SL, 52 points of engagement
• Weight: 1495 grams
• Lifetime warranty
• Price: $1350 USD
The carbon rim's shape doesn't look as out-there as the very low profile of the single-wall 3Zero Moto rims due to the use of a more typical box-style construction. The top of the rim does flare out slightly, a shape that's intended to help prevent pinch flats, since there's less of an edge for the tire to get folded over during an impact. Each rim wall is 3.85mm wide at the top, and the inner rim width is 30mm. The rim depth is 21.2mm.

As for pricing, the SW wheels are $1,925 USD for the set, or $1,025 for the rear wheel and $925 for the front. The S wheels are $1,350, $725 for the rear wheel and $625 for the front. Both wheelsets are made in Taiwan, and are covered by a lifetime warranty.

The ZM2 SL hub uses six spring-loaded pawls.
The hubs on the SW wheels are Centerlock-only, while the S wheels use a 6-bolt hub.

TyreWiz 2.0 allows riders to check tire pressure from their phone, or by looking at the device's blinking green or red light that indicates if the tires are at the desired pressure.
A look at the inner rim profile, complete with a fancy laser beam just because.

Initial Impressions

I've only been able to squeeze in a handful of rides in on the HiTop wheels so far, so a longer term durability assessment will have to wait. On the trail, they feel decidedly like an XC wheelset – there's a zippiness to them (no pun intended) that you won't find from a heavier set of trail or enduro wheels. They're certainly not uncomfortably stiff, although they also aren't as soft-feeling as those 3Zero Moto wheels were. I did get a few twangs out of the spokes when pushing hard into corners, and I'd recommend abiding by Zipp's recommendation that these are best suited to bikes with 130mm of travel or less. Those 24 spokes can only do so much, and when things get really fast and rough the wheels can start to feel undergunned.

If I was trying to decide between the SW or the S wheels I'd likely go with the S version. Yes, they're heavier, but they also have 6-bolt hubs instead of Centerlock, and they don't come with TyreWiz 2.0. I know, I know, someone spent a lot of time developing that tire pressure monitoring system, I just still can't get behind adding another battery powered gadget to a bike when I already check my tire pressure before every ride.

Look for a follow-up report once we get some more miles in on these wheels, including some back-to-back laps in against other competitors in this category.

Author Info:
mikekazimer avatar

Member since Feb 1, 2009
1,707 articles

  • 97 0
 I won’t be buying any SRAM wheels until SpokeWiz can monitor tension so that NipTender can adjust it on the fly.
  • 34 0
 Self adjusting nipples sounds so wrong and so right
  • 12 0
 Who doesn't like a tense nipple.
  • 18 0
 I really want their new Restroom Attendant, so I can take a wiz without dismounting.
  • 4 0
 @thomasjkenney1024: I learned from that Tour de France documentary on Netflix that Tom Pidcock has identified a solution for this.
  • 41 5
 I have the 3zero moto wheels and I thought the Tyrewiz was gimmicky but I love it. I have it linked to my Garmin so I can monitor my tire pressure in real time as a data field on my screen along with speed, distance, elevation etc. I’ve had a couple times where I caught a slow leak before losing all pressure because I noticed the PSI going down on the Garmin. It’s also helpful if there are big temperature or elevation changes. I did a ride this past weekend where the temps increased about 30 degrees during the ride. It was nice to adjust my tire pressure during the ride and not need to bring a separate gauge. Gimmicky, kind of, but I’ve become really fond of Tyrewiz.
  • 34 2
 But do you adjust your tire pressure requirement based on your changing weight during the ride as your sweat evaporates you dehydrate, drain your bottle(s)/hydration bladder, eat your snacks and piss in the woods?
  • 2 0
 Have you had any reliability or flat problems? I can't see a version number but there was an old version that looked like a flag on the tubeless stem and then this new version that looks like a base up against the rim. A good friend of mine had terrible reliability problems with the old flag version, whole assembly just sheared off while riding and ended up flatted out on a ride we did and had to hike out, got mad at them and gave the remaining stem away. I still have it in my garage but have been afraid to mess with them after all the trouble.

Do you have old or new? Significant design improvements?
  • 2 0
 @Mtmw: The 3zero Motos have a non-flag style pressure sensor like these new ones. It sits flat and would be pretty hard to damage without completely wrecking your wheel first.
  • 2 0
 @Mtmw: The flag version is aftermarket for any rim. The one shown here is specific to the Zipp rim profile.
  • 4 0
 @AndrewFleming: Yes, of course. Don't you?
  • 3 0
 @Mtmw: Tyre Wiz 2.0 has literally been publicly released today. It is extremely reliable and at far less risk of being damaged when trail riding that the original TyreWiz (which quite frankly was developed with quite a focus on road applications ie it was a tight fit for 32 spoke wheels and other design factors).
  • 2 0
 @andrewbikeguide: Released today but marked as "out of stock until 2024" at Design looks way better. Reliability I'll wait to read the reviews :-)
  • 1 0
 YES!!! finally I'm not the only one!! people still freak out when they see it, but for me it has become a must-have!!
  • 2 0
 @Mtmw: Did the sheered off Tirewiz notify him that the tire was going flat, after it had been sheered off?
  • 3 0
 help me out here,
what do you believe was going to be the outcome of the slow leak if you werent using tirewiz?

On your ride with the temp change, at what point did you stop and add air to your tire?
How did you add air to your tire?
Is this the same pump/method you use to add air if you notice its low in your garage?
Did you carry a gauge along with you on your rides prior to getting the tirewiz?
If you need a visual indicator of tire pressure while fluctuating, is it possible that you wouldnt have noticed by ride feel any difference on the ride with the large temp variation?
  • 5 2
 this does not sound like a fun way to enjoy the outdoors to me. The only time I see stuff like this is on Tourists bikes. Typically "all the gear & no idea" types.
  • 2 0
 @onawalk: that's a great question, IDK if he got his iphone out to check to see if the tire was flat after sealant blew everywhere and he jumped off his bike.
  • 3 1
 I've been using Tyrewiz on all my carbon mtb wheels across multiple bikes. I like softer pressures so being sure of the safety margin is great. I haven't broken rims or had any pinch flats since using Tyrewiz and display on my Garmin.

It's more than just checking pressure at the start of a ride. I am surprised at how much pressure changes during a ride!

Temperature in particular has a measurable effect. Starting a ride in a cold valley and riding into a hot day will rise the tyre pressure by 15-20% which is something you will feel. Or if you have your bike in the sun driving to the ride in the back of your truck canopy and then ride into cooler forest shade and river crossings. NOticeable pressure drop before you drop into the trail.

I think it's a great geek-out tool that's easy to get the best reliability and repeatable feel out of your tyres.
  • 3 0
 @onawalk: In the instance of the slow leak, I noticed on my Garmin that my rear tire was 3-4 psi lower than when I started my ride, I had just gone through a really fast chunky section, so I hopped off the bike and noticed a really small gash in the sidewall. I was able to get out my tire plug kit and stop the leak, I used my hand pump to get the tire back up to my selected pressure. Because of the little blinking LED light on the Tyrewiz, I didn't need to guess if I put enough pressure in, it starts to blink green when you're in your selected pressure range. If I didn't see the PSI loss on my Garmin I probably would have kept riding for a while, losing more pressure until it got to the point where I damaged the tire more or the rim.

I don't carry a gauge, my pump has a gauge on it but I don't even need to look at it with the Tyrewiz, just pump it up until it blinks green.

You're right, I probably didn't really need to adjust the tire pressure due to the temperature change, it's not like it would have caused me to crash. But we had just done the last big climb of our 4+ hour ride and were about to drop into the longest descent of the day. I made it to the top first, so while I was waiting for my buddies I noticed both Tyrewiz's blinking fast red, which means they were higher than my preferred PSI range. So I let a little air out until they blinked green. Is it a game-changer? No, but I've been mountain biking for 27 years and appreciate most new technologies that I feel have a tangible benefit. I unabashedly like Tyrewiz.
  • 1 0
 @matmattmatthew: I'm stoked you like it, its not for me, but that doesnt mean its not a cool product.
I shutter to think of riding my bicycle with a display providing all sorts of random or pertinent info blinking away, and I think we can get a little too caught up in the details, but thats only one mans opinion, and you know what they say about opinions....

Did the Garmin display happen all at once, or did it grow over time?
How acurate is the pressure range that tirewiz provides? how big is that range?
  • 1 0
 @Kaggel: 2% over 10 degrees Fahrenheit, thats the typical pressure change.

approx 2% over 10 degrees....
  • 1 1
 @onawalk: I am seeing about about double that usually. Usual temp range is about a 30F increase in temp through a ride. And about a 15-20% rise in pressure

Quite sensitive. LIke a river crossing and I'll see a 1-2psi drop as well. And then recover as the tyre returns to temp.
  • 2 0
 @Kaggel: I just run the Ideal Gas Law calcs in my head while I ride. You know pV=nRT. where P, V, T are the pressure, volume and temperature respectively; n is the amount of air molecules; and R is the ideal gas constant. Quite simple actually.
  • 1 0
 @onawalk: On a serious note, I hate gadget creep as much as you do. The thing about TireWiz is it doesn't break my rules, which are: 1> don't depend on a battery to ride your bike and 2> don't take a battery into a forest that could burn the whole forest down.

If the TireWiz fails and runs out of batteries, your bike still works and you can be out in the woods feeling blessed to be healthy and on two wheels. As long as they fix the snapping off problem of the original design... which it looks like they solved with 2.0.

Of course there's the outrageous expense, but with mtb that's a lost cause.
  • 1 0
 @Mtmw: This is amazing!
  • 22 0
 XC/DC Wheelset Field Test Please!!
  • 8 0
 Shall we talk about the weight difference between claimed and actual? For that actual weight, one could grab DT Swiss XRC1501 and still have 700€ left for beers, hookers and more.
  • 1 0
 Did @mikekazimer remove the tyre wizes before weighing? If not that's most of the difference right there.
  • 1 0
 Pretty huge difference on a lighweight wheelset. A weightweenie would lose their sh1t.
  • 1 1
 @nozes: Exactly, hence the possible explanation for the discrepancy. Zipp won't have said 'well we'll just weigh it with the Tyrewiz on because those XC boys dont really care too much about weight'.
  • 4 0
 @benpinnick: tyrewizz are 10 grams…
  • 1 0
 "ill get my own wheelset, with black jack and hookers!"
  • 5 1
 I have never seen a functioning set of moto wheels from zipp on the trails in my entire life. I truly would like to know where the majority of these wheels are being purchased and ridden.
  • 3 1
 I bought just a front on sale two years ago and it's my favorite front wheel to date (paired with either a Reserve or DT XM1700 rear). I have tried carbon from CB Synthesis, Reserve 30's and SL's and Ibis S28's (in order of best to worst).
  • 6 7
 Dentists on their 15k bropeds
  • 1 0
 I ran a set for just over a year. They were great until I had to swap a spoke and re-tape them. Impossible to get them to seal given that you must tape over the nipples. I loved they way they ride but they now live in a box in my garage full time.
  • 1 0
 I bought a second hand bike that had them on. It's a 130mm trail/DC bike, but for various reasons, the front one has made it into my enduro bike for a couple of wet races. I'm only 75kg and don't smash berms, so I don't find either especially noodly. Can be an utter pig to set tubeless, as there's no typical central channel, just tape over the spoke heads. And you need super flexy tape, otherwise it just leaks. DT tape = nogo, Muc-off seems ok (done carefully). Would I buy again? Probably not. Am I bothered enough to replace? No
  • 1 0
 I had a set on my last bike (27.5 Stumpjumper) and loved them. I've ridden them all over, including The Whole Enchilada in Moab.
  • 6 0
 Do you notice other riders’ wheels of any brand while you’re out riding?
  • 2 0
 @Mirt19: want to clear some space in your garage?
  • 1 0
 I’ve got a set. They’re sweet.
  • 10 1
 I have a set of Zipp Motors that I’ve ran for 4 seasons. They have been the most reliable wheel set I’ve ever owned. They’ve been to most of the bike parks in the Rockies, Northstar, and Whistler as well as a lot of trail riding in the Rockies on a Norco Range or a Gnarvana. I did have a front hub issue the first season. One rotor bolt flange split even though it was properly torqued. They took care of it no questions asked, but I did have to ship the wheel in, they replaced the hub and sent it back. Total time without the wheel was about 2 weeks. I weigh 185 ish lbs with gear and love long, chunky, and fast trails. I really like the ride feel of these wheels. I also have some time on the CB Synthesis Carbon DH wheels. In high speed bike park berms the Synthesis rear wheel is slightly better, but not a huge difference. Although the compliance and comfort is just slightly better on the Zipps. The Synthesis are really good in this aspect as well, close to the Zipps for my weight. Reliability wise, excluding the hub warranty, these hubs have been awesome. I usually have to start servicing DT bearings after a season. The Zipp hubs haven’t needed any service whatsoever. The rims are a little more challenging to install Cush core because the rim channel isn’t as deep as I would prefer, but it’s not terrible. They come with a strip of harder material over the spoke nipples under the tape. It can be pulled aside to service or replace spokes without being damaged. As long as it’s on there I haven’t had any issues with rim tape or leaks. They have been very reliable. I travel a lot for work and take my bike with me. It was nice to have the correct pressure even when using a pump at the top of a lift mid day. I like the Tyrewiz for that aspect, but over time they do take extra maintenance to keep the seals on the valve stem functional. They don’t work well with Cush Core, but do work with Airliner, or Tanus. Like Kazimer, I also check my pressures before every ride. However, because of seal issues I finally removed the TyreWiz and haven’t put them back on. I would also ride them with dead batteries for months because I didn’t care enough to put batteries back in if I wasn’t traveling. Overall, I would recommend the Zipp 3Zero Moto’s to anyone that wants to ride all day on the roughest trails and minimize fatigue. They are extremely reliable and really take the edge off with just a slight loss of stiffness in really dialed bike park berms. If A-line is blown up like it was this August, I would say they are a major benefit. I haven’t put enough time on the CB Synthesis Carbon DH wheels to comment on their reliability. I think they would probably be a better option for someone over 200lbs that rides hard but wants some improved comfort, or increased ride time before your hands give up. I’ve also ran DT Aluminum rims for years before going with these carbon options. They are comfortable, far less expensive, but definitely not as reliable as either the Zipp Moto’s or the Synthesis Carbon DH’s.
  • 2 0
 Thats a curious way to word that comment, it implies you have encountered non-functioning Zipp wheels on the trail. I'm not sure I pay much attention to wheels when riding, or standing in the parking lot, mostly frames and bikes, and only if they really stand out. Actually, when in the parking lot, I seem to notice if people do the half change of clothing more, that and socks with Birks. When riding, I seem to notice if people are having proper conversations, or if theyre breathing out their eyeballs like myself
  • 3 0
 @sammybikes916: I would not be opposed to it. hit me with a PM.
  • 1 0
 I have built approximately 20 3Zero Moto wheelsets while at The Path Bike Shop in Orange County, CA. But yes, they are kind of rare compared to most other carbon wheels, and I've only seen one stock bike that spec'd them. Doing custom builds with them is somewhat challenging compared to other rims. (Radial truing is annoying and spoke calcs/sourcing is finicky)
  • 2 0
 I ran them on a SB150 for about a year. Loved them. Currently running a set on my Hightower. I have broken every carbon wheel I have own, Enve, Reserve, Revel. Still haven't manage to break the Zipp's
  • 1 0
 Have run a set with Hydra hubs for over 3K on the enduro bike(s) on everything. I also break a lot of shit, but not these things. Just had to rebuild due to a couple broken spokes, trued right up. Yes, they aren't as simple as regular box-style rims to work on, but they really are excellent rims. Compliance is real, excellent feel, increased grip in everything. Also, much fewer pinch flats. Not sure if it's the ankle roll or wider rim face but it works.
Love em, will run em as long as I can.
  • 1 0
 @onawalk: I saw broken rear. And that means non functioning set... that's all
  • 6 1
 Pick either checking your tire pressure or tyrewiz battery and be a dick about it.
  • 8 3
 What’s “light trail”? Like a few little pebbles and ruts here and there?
  • 12 2
  • 4 0
 I think that it's a nod to machine-built IMBA-style swoopy sidewalks. The ones without any rocks except those armoring the waist-high berms and predictably-spaced tabletops
  • 2 0
 @drapeau: with just enough vertical drop that all the plebs can stomp breaking bumps into the berms
  • 1 2
 It's that level where cleaning a blue trail is a big deal-no air, no drops, usually walking up/down anything resembling a rock garden.
  • 1 1
  • 3 0
 its graded on average for the ride, so either just like a bad gravel road, or doing a big road ride but you stop and do like a canyon gap or a huge rock garden in the middle. as long as it averages out to a light trail ride this wheelset should do fine
  • 2 0
 When the trail is not dark. Wink
  • 4 0
 I like the idea that they suggest a max travel of the type of bike they are designed for. Nice and easy to understand rather than some vague wording from the lawyers
  • 3 0
 I like that too, except for the part where I ride my 120/130 travel bike like a DH’er.
  • 2 0
 Yeah, can confirm with @Untgrad,
My 120 bike is my coaching bike, which seems heavy use, and I have no mechanical sympathy regardless of the bike I'm riding.
  • 2 0
 I also thought that was an interesting way to put a limit on the use case, but then remembered I'll take my 135 bike in pretty much anything and beat the hell out of it. Doubting these wheels are made for 130mm of hard ripping.
  • 1 0
I had a set of SRAM Roam 60 carbon enduro rims that were said to be indestructible.
I did a death ride on my 100mm Tallboy, and put 2 cracks in the rear rim. And I only used 85mm to do it!
Would using maybe 70% of a 180mm travel bike saved that rim?
  • 1 0
 @Untgrad: Who knows?
  • 1 0
It was like a DH course, where I cracked that rim.
I have a different riding style since I was an off-road motorcycle racer most of my life. Just get as loose as possible, let the bike dance.
I let it fly that day..
  • 1 0
 @Untgrad: rims sized up to 180mm rotors
  • 3 1
 Something definitely worth investigating is how they preload the bearings in the hubs. Normally you wouldn't need to look into this, but this is Zipp so you really should. Zipp have had a bad reputation for their hubs for a long time now. My understanding and experience with bearing preload is if you do it right, the bearings can last a very long time. But if you do it wrong, you shorten the lifetime, potentially dramatically (half an hour!). I have had hubs where you can manually set the preload (extralite) that have enormous bearing life, and hubs where the preload is set by spacers and clamping the wheel into the bike (DT Swiss) where they also last a long time. I think the manual method can be better, but it's much harder for the user to figure out and runs the risk of ruining the bearings, so the DT Swiss method is fantastic for almost everyone.

I bought a set of 454NSW and was disappointed to find out immediately that they don't have a proper preload mechanism for the freehub. The outermost bearing has no preload, and the inner one has preload in only 1 direction, with nothing constraining it. LBS confirmed that if you install the wheel in a bike and tighten the axle at all, the freehub fails. Took a month to get sram to sort it out. Came back from zipp not fixed, and then after the LBS continued to pursue it a fix apparently materialized. But I haven't gotten time to test it yet.
  • 4 4
 On a rad bike, aero integration is everything and prebuilt wheels are the hot ticket.

On the MTB……not so much. No reason to get these vs good rims, DT hubs and Comp Race spokes.

As for the tire wiz, if you check your pressure before every ride (like you should) it’s redundant. If you run optimum pressures on a modern wheelset (wider rims, lower pressures) you’ll know if you’re losing pressure pretty fast.
  • 9 0
 My 2023 Scott Spark came with tire wiz and I thought the same as you before using it. The LED on the unit flashes green when the tire is at the correct pressure you preset. It turns out to be a pretty nice feature. Pump until it turns green, then ride. I wouldn't go out of my way to buy it but has a use.
  • 1 0
 I check my pressures before every ride, but on most rides I will have at least one "incident" and stop to give them a quick thumb squeeze to check everything is still tickety-boo, usually it is, sometimes it isn't, often I stop again a bit later to double check. I would REALLY like to have tyre-wiz to allow me to stop doing this and ideally just wait for a notification if there is a problem. 300hours seems like a long time to me, that's probably 6 months-ish for me. BUT I can't see myself paying the £200 involved.
  • 5 2
 @mgs781HDBig Grin oes Tire Wiz work? Absolutely. Is it worth the cost? Absolutely not.
  • 1 0
 @G-Sport: Instead of squeezing, I flick my tyres and listen to the sound they make. So the rear has more pressure, so it's ting ting ting and the front goes tang tang tang when I leave the house. Mid ride, if the rear makes the same sound as the front, I know I've lost pressure. If either goes thud thud thud I'm screwed.
  • 2 0
 Is 27.5 dead? Honestly finding light rims for my 27.5 bike is a nightmare, as well as 100mm F 142mm R, basically a bargin bin hunt
  • 4 0
 Google that last word you said and put "wheels" after it
  • 1 0
 With the volume of mullets begin produced I think 27.5 will live on! Tires and rims should be available...until we go 36".
  • 1 0
 MCFK, few others on R2
  • 1 0
 As for pricing, the SW wheels are $1,925 USD for the set, or $1,025 for the front wheel and $925 for the rear.

This is weird, right? Does the rear actually cost less than the front?
  • 1 0
 Nope, just a typo. That's been corrected.
  • 4 1
 Zipp Zlopp HiTopp Hoppe these wheels Don'T go Popp
  • 1 0
 Not to mention @mikekazimer the tire wiz is added weight and for an XC/Race wheelset why remove weight, potentially removing durability, etc. And add it back with tire wiz?
  • 1 0
 Its removable so if you don't want it then thats cool, take it off and sell it.
  • 3 0
 Did Zipp get their hubs right after 30 years of trying?
  • 1 0
 They aren't DT's......
  • 3 0
 What limit weight Rider?
  • 7 0
 The maximum recommended 'system weight' is 286lbs / 130kg (rider + bike).
  • 1 0
 SRAMalangadingdong Zippadedoodaa.
  • 1 0
 How do you weigh a trail?
  • 11 11
 Just get light bike ones.. Made in same factory.
  • 3 1
 whats a light bike ones?
  • 8 4

The price on theese wheels are insane. U can buy two rims from light bike, any hub you want, lace them at berd, and save 500 bucks.
  • 8 1
 @weepweepweep: $50 more for a WR1 Union than the equivalent Light Bicycle wheel shipped to my house....
  • 2 1
 @RusMan: Call me a xenophobe but I like your way way more
  • 2 4
 If you need the actual weight here is a link to Dangerholm Instagram post about these wheels.
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