XC925 asymmetric rim profile carbon 29 inch carbon rims mtb

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Global warehouse ship to most countries while the North America warehouse only ship to the United States and Canada

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  • 1

    RIM

  • 2

    ACCESSORIES

  • 3

    OVERVIEW

RIM

Version This is a required option.

Our XC rims are front and rear specific.

The front rim uses a lighter pre-preg and a blend of Toray T700/T800 as well as Flyweight internal spoke hole patching.

The rear rim uses a continuous spoke bed and a stiffer reinforced layup design to create a balanced feel between the front and rear wheels.

Flyweight (best for front)

Standard (good for rear and front)

Weave This is a required option.

UD

Hole Count This is a required option.

Please note that our valves are drilled for presta and spoke holes are made for external nipples only. If you have a custom drilling requirements please e-mail us and we'll send you a purchasing link.

16H

18H

20H

24H

28H

32H

36H

Finish This is a required option.

Our Recon Pro and Falcon Pro rims feature BlackTek and come out of molds as a finished product, with a scratch resistant and near flawless finish, eliminating the need for sanding or painting.

paintless

Rim Warranty This is a required option.

For Recon Pro Series ( MTB rim), Falcon Pro (road rim) and Drift Pro (fatbike rim), 5-year warranty is set as standard, and optional Lifetime Premium Warranty are kindly offered to purchase with minimum charge respectively.

5 Years

Lifetime USD +50/rim

Decal This is a required option.

The stock graphic is a glossy black waterslide for a subtle look. Avery vinyl logo-kits are available in 11 colours. The vinyl is replaceable and easy to install.

No

Black

Blue

Green

Magenta

Orange

Red

White

Yellow

Silver

Gold

Turquoise

Purple

Valve Stem This is a required option.

We include enough valves to cover your individual rim purchase. We use a lightweight black alloy anodized valve with an oversized concave collar for easy gripping. A rubber o-ring goes in between the rim and the collar to help seal the rim and match the contour of the rim profile. The vavle core is removeable so you can add sealant withoutn removing your tire.
Link to tubeless valve instructions

None

Add Valve Stem USD +7 each

Tubeless Tape This is a required option.

One 10 yard roll of tape will be included. It is typically covers 2 rims with two laps each or 4 rims with one lap each.The high tensile tubeless tape features a natural rubber adhesive that does not leave a residue on the rims. On mountain bike rims, one layer of 18mm width tape is strong enough to seal the access holes which makes for the lightest tubeless setup.
Instructions of tubeless rim tape

None

Add Tubeless Tape USD +6 each

29er-mtb-rims

In Stock, typically ships within 2 business days

In Stock, typically ships within 2 business days

Non-Stocked, typically ships within 1-2 weeks Go to rim inventory page

Non-Stocked, typically ships within 1-2 weeks Go to rim inventory page

Recon Pro orders start shipping in October.

- + PCS

Version This is a required option.

Our XC rims are front and rear specific.

The front rim uses a lighter pre-preg and a blend of Toray T700/T800 as well as Flyweight internal spoke hole patching.

The rear rim uses a continuous spoke bed and a stiffer reinforced layup design to create a balanced feel between the front and rear wheels.

Flyweight (best for front)

Standard (good for rear and front)

Hole Count This is a required option.

ROAD Product
Road rim brake: Stocked in 20h and 24h
Road disc: Stocked in 24h and 28h

MTB Product
MTB rims: Stocked in 32h. Only XC Flyweight rims are stocked in 28h as well as 32h
Please note that our valves are drilled for presta and spoke holes are made for external nipples only. If you have a custom drilling requirements please contact us.

28H

32H

Finish This is a required option.

Our Recon Pro and Falcon Pro rims feature BlackTek and come out of molds as a finished product, with a scratch resistant and near flawless finish, eliminating the need for sanding or painting.

paintless

Weave This is a required option.

UD

Rim Warranty This is a required option.

For Recon Pro Series ( MTB rim), Falcon Pro (road rim) and Drift Pro (fatbike rim), 5-year warranty is set as standard, and optional Lifetime Premium Warranty are kindly offered to purchase with minimum charge respectively.

5 Years

Lifetime USD +50/rim

Decal This is a required option.

The stock graphic is a glossy black waterslide for a subtle look. Avery vinyl logo-kits are available in 11 colours. The vinyl is replaceable and easy to install.

Black (Stock)

Blue

Green

Magenta

Orange

Red

Yellow

White

Silver

Gold

Turquoise

Purple

Valve Stem This is a required option.

We include enough valves to cover your individual rim purchase. We use a lightweight black alloy anodized valve with an oversized concave collar for easy gripping. A rubber o-ring goes in between the rim and the collar to help seal the rim and match the contour of the rim profile. The vavle core is removeable so you can add sealant withoutn removing your tire.
Link to tubeless valve instructions

None

Add Valve Stem USD +7 each

Tubeless Tape This is a required option.

We use a tubeless tape with high tensile strength and only one lap is required so it is very light. It uses a natural rubber adhesive that does not leave any residue on the rims.

None

Add Tubeless Tape USD +8 each

29er-mtb-rims

In Stock, typically ships within 2 business days

In Stock, typically ships within 2 business days

Non-Stocked, typically ships within 1-2 weeks Go to rim inventory page

Non-Stocked, typically ships within 1-2 weeks Go to rim inventory page

Recon Pro orders start shipping in October.

- + PCS

Weight: 360.00g+/-15

Final total: USD 259+

Weight: 360.00g+/-15

Final total: USD 279+

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RIM SPECS

  • Size 29er
  • Use Cross Country
  • Type Hookless
  • Tubeless Ready
  • Inner/Outer Width 25mm/30mm
  • Depth 23mm
  • ERD 594mm (not including nipple head dimension)
  • Weight Flyweight 295+/-15g, Standard 360+/-15g
  • Offset 2mm (asymmetric)
  • Weight Limit 100kg
  • Spoke Hole Angle ±5°
  • Spoke Tension ≤145kgf recommended
  • Tyre Pressure ≤60psi recommended
  • Tire 2.1" ~ 2.4" recommended

Teleport to the wheelset building page.

Our new generation of Flyweight XC rims are updated with a wider profile and a front/rear specific layup. They are targeted towards cross country racers who seek every possible edge on the course.


Our goal with this iteration was to produce the lightest possible rim-set without sacrificing performance or reliability. The ultralight front rim utilizes a blend of Toray T700 and T800 carbon fiber and receives our spoke hole patching treatment, which maximizes weight reduction. The rear rim uses a continuous spoke bed and a stiffer reinforced layup design to create a balanced feel between the front and rear wheels.


Now with a wider profile, increased resistance to impacts, as well as a tailored front/rear design, the XC925' build the ultimate XC race wheelset.


ExoTek: ExoTek-applied rims are designed to come out of the molds as a finished product which requires the most high quality manufacturing processes. The new resin system has superior consistency and forms the smoothest and most durable finish we’ve ever created. From a lengthened fatigue life to more robust interlaminar bonds, ExoTek raises the bar in performance and aesthetic.


EcoTek : Built from the highest grade of steel, we’ve engineered a completely new series of molds and developed a process that delivers a near flawless product. More time is taken through the layup and assembly process so that no post-production finishing is required. This new process is more environmentally friendly because it requires less heating cycles, no sanding, and no painting.


BlackTek : Rims featuring BlackTek come out of the molds as a finished product. Traditionally, rims are wet-sanded to remove imperfections like excess resin and then sprayed with a clearcoat. BlackTek rims come with a factory finish and the outer carbon layer is never disturbed after the curing cycle is completed. This is the most hard wearing and scratch resistant finish we have ever produced.


Flyweight: Our lightest construction method uses an exclusive unidirectional prepreg with a very low fiber areal weight. A variable thickness nipple bed reinforces key areas around the spoke holes, eliminating excess material. A blend of Toray T-700 and T-800 offers the weight saving benefits of T-800 carbon without compromising the strength or stiffness of the rim.


Asymmetric : Over the years, we’ve optimized an asymmetric profile that maintains the outright impact performance of a symmetric design but enjoys the benefits of offset spoke holes. This design significantly equalizes spoke tension between drive and non-drive spokes which results in a stronger wheel build that stays true longer.


Tubeless : All of our rims are tubeless compatible with bead seat retention. In most cases a floor pump is all that is needed to seal our rims. The bead shape is tailored to each rim width to achieve the best fit. Our hookless and clincher profiles have a smooth radius to reduce the chance of a pinch flat.


For Non-Pro Series Rims: From the date of purchase, 3-year Standard Warranty.

For Pro Series Rims: From the date of purchase, 5-year Pro Warranty as standard and an upgraded optional lifetime Premium Warranty with minimum charge.

Crash Replacement: It is applicable with the same period as the warranty time range that you purchased for the rims with 10% /25% discount for Non-Pro series /Pro series.

Know more about the warranty policy >>

Gallery

Michael Quinn : Thanks but I’ve bought a set and they arrived yesterday , thanks again they look awesome! Blur XX1 in XL
Australia
1

COMMENTS

P

Pete 2019/08/08

Hello, I am building a rigid carbon 29er gravel bike. I will primarily be riding dirt and gravel forest roads, not single track, typically running 2.1 to 2.3 tires. I weigh 80kg, and am a very careful and smooth bike rider, with 30 years of avid mountain and road riding. I don't smash rims on objects, break bike parts, and very rarely crash. In other words, I am not hard on my bikes. Would the Flightweight XC925 be suitable as a front and rear rim in this case? Thanks for your help before I place my order. Pete


LightBicycle 2019/08/09

Hi Pete, We suggest using XC925 flyweight 29er XC rim on the front only to prevent an accident. Of course, you can use it for the rear wheel if you like. I can make the invoice for you considering we only have flyweight/standard mixed option online. Just note that the flyweight version is not as strong as the standard version. Could you provide the exact specs you like to have for the 29er cross country rims? Thanks, Lightbicycle


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M

Madalin 2019/05/25

Hello, I'm interested in purchasing a pair of carbon rims for my hardtail bike. My weight is 90 kg, I ride XC mostly with a few rocky sections now and then. I use 29x2.25 tires and now I have a pair of aluminium rims but I'm looking for a wider width, 25 mm for example. Do you think the XC925 standard would be fitted for me or could you recommend me something else? I'm looking for a set of durable and lightweight rims if this is possible. I must tell you that I'm scared of the possibility that a pair of carbon rims to brake under my weight. That's why I'm a litlle bit suspicious to switch to carbon rims, though I always wanted this upgrade for my bike. Thanks!


LightBicycle 2019/05/29

Hi Madalin, First of all, XC925 29er XC rim is an excellent choice, It's the lightweight XC rim from our RECON PRO series that feature with stronger rim structure and manufacturing technique. The rider weight we recommend is 100kg tops. So your weight 90kg is ok to ride. However, you mention a rocky situation riding, we can customize a reinforced version out of the standard version for you if you don't mind adding some weight to the rim. If so, I will create the invoice for the customize version rim for you. Carbon fiber is with higher mutual and tensile strength material than aluminum, it's also a stiffer and better weight-to-stiffness ratio. With proper layup and structure design and manufacturing process, carbon rims are a definitely better choice over alloy rims. BTW, XC925 is with a 5-year standard warranty. Thanks, Lightbicycle


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B

Bart 2019/01/15

I weigh 145 lbs and ride 65% XC 25% Trail and 10% AM. I currently use your flyweight 29C06 on my hardtail and it works well for me. Would flyweight XC925 do as well? Thanks, Bart


LightBicycle 2019/01/15

Hi Bart, If you ride all mountain, it is better to use XC925 standard version. Do you ride aggressively? If our current RM29C06 flyweight is okay for you, then XC925 flyweight is also okay. XC925 recon pro rims are more durable. Thanks, Lightbicycle


B

Bart 2019/02/13

Is there a symmetric version of XC925 to use for the front? I like the weight and width of this rim but it looks all you have is the asymmetrical version which only makes sense for the rear.


LightBicycle 2019/02/14

Hi Bart, Sorry that we don't have the symmetrical version of XC925 29er XC rim. Currently, we will build asymmetrical rims for both front & rear. As you know, asymmetrical rims make both the front and rear wheel more balanced between the drive side and non-drive side. The MTB hubs are mostly with an offset from the centerline, so an asymmetrical rim would make the spoke tension closer. Thanks, Lightbicycle


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R

Ren 2018/12/14

I’m getting yeti 29er SB100 Xc /trail bike with 100mm rear ,front 120mm. 69kg with gears. I’m looking for light rims for XC trails .trail is not steep and just few small knee level drop.


LightBicycle 2018/12/15

Hi Ren, Our XC925 rim is specially designed for XC riding and would be strong enough for you. If you want light rim set for racing, you can order front flyweight and rear standard version. The flyweight version is only 295g+/-15, and rear standard version weights 360g+/-15. It's suitable for 2.1"~2.4" tire. Does it work for you? Thanks, Lightbicycle


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R

Ralph 2018/11/20

Hi, I am a somewhat heavier rider (95kg). I am considering these rims for a custom set for my new fully (to be used during the cape epic). I would assume you would not recommend me to use the flyweight rim, but would a set of two standard rims work for me? Thanks, Ralph.


LightBicycle 2018/11/22

Hi Ralph, If you are not an aggressive rider but wanted a strong setup, the standard version would work well for you. What would be the tire width that you plan to use on the wheels? We can manufacture a stronger version for you since you are considering building a strong wheelset. What kind of riding you usually do? If you are riding both XC, AM, even EN, I would recommend you to check out the AM927 (33mm wide, 25mm deep). We can also make a stronger version of this rim for you of course. It would be priced higher because of the additional carbon fiber and extra work. Will this be ok with you? Thanks, Lightbicycle


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J

Julius 2018/11/18

Gudday lightbicycle I'm xc rider my weight its almost 84kgs As of now i'm using aluminum rims Most of our rides are trail Front tire 2.25. 29" Rear tire 2.1 29" I'm planning buy your product carbon rims.any recommendation best for me? Thanks julius


LightBicycle 2018/11/26

Hi Julius, What feature are you after for the carbon rims? Lightweight? Strongness? Scratch proof? I have three 29er XC rim model to recommend, RM29C06 (lightweight), RM29C19 and XC925 (scratch proof). Note that only the XC925 is with the asymmetrical design, it provides better spoke tension balance between drive-side and non-drive side. It will make rims/wheels more durable, Thanks, Lightbicycle


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J

Julius 2018/11/18

Gudday lightbicycle I'm xc rider my weight its almost 84kgs As of now i'm using aluminum rims Most of our rides are trail Front tire 2.25. 29" Rear tire 2.1 29" I'm planning buy your product carbon rims.any recommendation best for me? Thanks julius


LightBicycle 2018/11/19

Hi Julius, What feature are you after for the carbon rims? Lightweight? Strongness? Scratch proof? I have three model to recommend, RM29C06 (lightweight), RM29C19 and XC925 (scratch proof). Note that only the XC925 is with the asymmetrical design, it provides better spoke tension balance between drive-side and non-drive side. It will make rims/wheels more durable, You can check out all these three 29er rim details at the link below: RM29C06: https://www.lightbicycle.com/bead-hook-less-rims-carbon-29er-light-bike-rim-tubeless-compatible.html RM29C19: https://www.lightbicycle.com/U-shape-29er-rim-30mm-wide-hookless-MTB-bike-carbon-rims-tubeless-compatible.html XC925: https://www.lightbicycle.com/XC925-asymmetric-rim-profile-carbon-29-inch-carbon-rims-mtb.html Thanks, Lightbicycle


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R

Rick 2018/11/11

Hi, how do these new flyweight versions compare to the older RM29C06 flyweight rims that are compatible for both front and rear use? Also would you be able to make these with only 1mm offset?


LightBicycle 2018/11/12

Hi Rick, All of our Recon Pro rims are paintless. Applied in model XC725, XC925 of Recon Pro Series, our lightest construction method uses an exclusive unidirectional prepreg with a very low fiber area weight. A variable thickness bed reinforces key areas around the spoke holes, eliminating excess material. A blend of Toray T-700 and T-800 offers weight saving benefits of T-800 carbon without compromising the strength or stiffness of the rim. May i know your weight and riding style? Then we can check whether it is okay to use flyweight version for both front & rear on these XC 29er rims. Offset is for enlarge the angle of drive side while building the wheelset, so that it can add the lateral stiffness. It should be keep at least 2mm offset. Why do you prefer 1mm offset? We can check with our enigineers. Thanks, Lightbicycle


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J

Jim 2018/10/26

Greetings. I am considering using your rims for a custom wheel set. I do mostly trail and XC riding on a full suspension 29er. Weight is approximately 78 kg. Trails are dry, and rocky and steep around here. Running 2.35 tires front and rear. I have always appreciated light bikes and wheels. Can you suggest a rim set for me? Thanks. Jim


LightBicycle 2018/10/31

Hi Jim, 1. The rims(XC925) you are looking at is our newly launched paintless series RECON PRO. As you can see, we offer two version of it, standard (360g+/-15) and the flyweight (295g+/-15). According to your description, the trail you ride on is normally steep and rocky, so I would recommend you to go with the standard version just to be safe. The flyweight version is made for those who ride light XC or lightweight rider. Since you are looking for a light set, XC925 would be a good fit. 2. Your 2.35" tires would be ok on XC925 29er rim. Thanks, Lightbicycle


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G

Gareth 2018/10/04

Hi. I weight 78kgs and am building up a hardtail. Given the info above are any of your “flyweight” rims suitable for a rear rim XC bike build? Or are you recommending the flyweight for the front and standard for the rear on all your rim options (including the 22mm internal diameter carbon XC rim) Thanks Gareth


LightBicycle 2018/10/07

Hi Gareth, Sorry for the late reply. We were on National Day vacation from Oct 1st~6th. We are just back to work today. Do you ride aggressively? If you like these light XC925 rims, we definetely recommend customer to order front flyweight version/rear standard version. It is more durable and it is a good combination. May i know your tire width please? Do you like rims only or complete wheelset? Thanks, Lightbicycle


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