General
Wheelset Weight: From 1055g ±30g
Max. System Weight: 100kg
Tire Width Compatibility: 23-45c
UCI Certification: Passed Vertical Impact Test | Certification Not Applied For | UCI Certification Has Only Been Applied for GCX and RCX Ultralight and Hyperlight Wheels As Well As Some RCX Team Wheelsets
Intended Use: Road Cycling
Rims
Rim Type: Tubeless Ready, Hooked
Rim Depths: 35/40/45/50/55/60mm
Internal Rim Width: 19mm
External Rim Width: 26-28.5mm
Finish: Matte Raw, Unidirectional
Brake Track: 3K Twill
Hubs
Freehub Mechanism: Star Ratchet
Engagement: 36T and 54T Options
Bearings: TPI Steel and Ceramic Options
Brake Interface: Rim
Material: 6061 and 7075 Aluminum Alloy
Spokes:
Spoke Type: 3rd Gen 5.2mm Aero (AR1 Only) and 4th Gen 3.2mm Aero Carbon and Carbon Options
Spoke Interface: Replaceable, Mechanically Secured
Front/Rear Spoke Count: 16/21
Front Spoke Lacing: 1X/1X
Rear Spoke Lacing: 3X/Radial
*Ultralight series wheels have a 100kg system weight limit.
*Extended 5-year and lifetime warranties only cover rims after the initial 3-year limited warranty
Free Shipping
Our free shipping option is available for over 40 countries and territories. Taxes are pre-paid, so you do not need to pay them when your goods arrive. The following countries and territories as well as others have free shipping:
Asia: Hong Kong, Indonesia, Japan, Macao, Malaysia, Oman, the Philippines, Singapore, South Korea, Taiwan, Thailand, the UAE, and Vietnam.
Europe: Austria, Belgium, Bulgaria, Croatia, Czech Republic, Denmark, Estonia, Finland, France, Germany, Hungary, Ireland, Italy, Latvia, Lithuania, the Netherlands, Norway, Poland, Portugal, Romania, Russia, Slovenia, Slovakia, Spain, Sweden, Switzerland, and the UK.
North America: Canada and the US (Except Alaska, Hawaii, and non-contiguous territories)
Oceania: Australia and New Zealand
Note: Certain islands and non-contiguous areas of these countries and territories might come with an additional fee. Examples include Italy (Sardinia, Sicily, Venice, etc.), France (Réunion, Île de Ré, etc.), Spain (Balearic Islands, Las Palmas, Canary Islands, etc.), as well as other locations in Croatia, Denmark, Estonia, Finland, Germany, Greece, Netherlands, Portugal, and Sweden.
Note: Free shipping is limited to wheelset orders only. If you order accessories along with your wheelset, they will be placed in the wheel box. Accessories ordered separately will require an additional shipping fee.
What about other countries and territories?
Customers who live outside of these countries and territories should contact our customer service about additional shipping and customs fees. Higher costs are the result of more expensive transportation costs and a lack of tax-included shipping options.
Processing Time
Rims that are in stock can typically be built into wheels and shipped in a week or less. We try our best to keep our Hyperlight, RCX 40/45/50, and GCX 40/45/50 rims in stock as they are our most popular options.
Wheels whose rims that are not in stock will require 10-15 business days (Monday-Friday) for processing before being shipped.
Orders placed from Monday-Friday will begin processed the same day. Any orders placed on Saturday or Sunday will start processing on Monday.
Shipping Time
Once your order has been shipped, we will send you the tracking number by email. Shipping times vary based on where you live, the chosen shipping method, time required in customs, etc. Understand that in some circumstances, shipping time may be outside of the range we provided. If you require faster shipping, please contact us.
Shipping time varies by region, with orders arriving within 3-10 business days in East and Southeast Asia, 10-15 business days in Europe, and 5-10 business days in the US, Canada, Australia, and New Zealand.
Tracking Your Order
Once your order is shipped, we will send you a tracking number. You are welcome to track the shipping status using this link: https://www.17track.net/
*For orders shipped to Europe, tracking status typically will not change until 2-3 weeks after the order has been shipped. The tracking status only changes after the shipment has already passed through customs in Europe, at which point, will take only a few days to arrive.
Returns and Refunds
At Particle, we have a comprehensive return and refund policy. More information can be found at this link.
What is included in the box?
Wheels come with three spare spokes, tubeless valves, pre-installed rim tape, quick release skewers, and re-usable minimalistic wheel bags.
What does the system weight limit include?
The rider weight limit includes the total weight of the rider, bike, gear, and any other accessories. Exceeding this weight will void the warranty. We offer wheelsets with different weight limits. Each wheelset weight limit is written in the product description. Ultralight and light series wheels have weight limits of 100kg and 120kg respectively, while team series wheels have 140kg weight limits.
What tire pressures can I run?
We recommend you follow the tire pressures found here. While our road and gravel rims have been tested to 150psi, you should never exceed the tire pressure written on the side of your tire. Doing so will void your wheelset’s warranty.
How strong are your carbon spokes? Are they easy to replace?
The replaceable carbon spokes we use have significantly higher tensile strength than steel spokes. They are suitable for both road and gravel riding, and are mechanically secured, preventing them from dislodging. Just like steel spokes, it is possible for them to break if struck with a high force, such as from a collision. As far as replacement, they are as easy to replace as regular steel spokes.
How strong are your carbon rims?
Our of our carbon road and gravel wheels have all been designed to be more than twice as strong as the UCI Vertical Impact Test standard, which is required for professional racing. You can be confident in their durability.
Are carbon spokes under warranty?
Yes. Carbon spokes are under warranty.
If I order from the US, will I get taxed?
No. There are no additional taxes or custom duties with our free shipping option.
What does UCI approval mean? Are the wheels UCI approved?
Wheels that are UCI approved can be raced in UCI sanctioned races. All of our wheels have passed more than double the UCI Vertical Impact Test. Currently, seven of our GCX Ultralight and RCX Ultralight wheels have received UCI Approval. The remaining GCX Ultralight and Hyperlight, and RCX Ultralight and Hyperlight wheels as well as a few RCX Team wheelsets should receive their certifications at the end in late February or early March.
Why does each rim have a hole in the side?
Each of our rims comes with a drain hole, which is designed to evacuate water using centrifugal force while riding. They reduce the amount of water that can accumulate inside the rim when riding in wet conditions. These drain holes do not affect the structural integrity or balance of the wheels.
Do I need a spacer for my cassette?
If you are using a Shimano 9/10-speed cassette, you will need a 1.85mm spacer. SRAM XD MTB cassettes also require spacers when paired with SRAM XDR freehubs.
Where can I get a replacement freehub?
You can purchase freehubs directly from us. Please do not use other freehubs on your hub due to potential compatibility issues.
Where can I get replacement bearings?
Bearings can be purchased directly through us. We strongly recommend that if you want to replace your bearings that you do so with the help of a professional mechanic. We advise against replacing freehub bearings. Instead we recommend you replace the entire freehub.
Do you have safety information and a user manual?
Please visit this page.
Next Generation Rim Brake Wheels
The CCX Ultralight
At Particle, we believe riders should have a choice. For this reason, we offer both disc brake and rim brake options. Since we are dedicated to offering next generation wheels, no stone was left unturned when developing the CCX Ultralight.
The CCX Ultralight features 3rd and 4th generation spokes, a 3k 230° high temperature braking surface, and TPI bearings
Efficient Star Ratchet Hubs
The AR1
The AR1 hub is designed for the latest iterations of carbon spokes, the 3rd and 4th gen. The hubs are machined with 5-axis CNC machines to exceptionally tight tolerances of just 0.005mm.
The freehub mechanism uses the star ratchet, the gold standard that has been proved again and again. It is available in 36T and 54T options, depending on your preferences.
The Ultimate Performance Enhancer
Replaceable Carbon Spokes
We believe that replaceable carbon spokes are the future. They are lighter, more fatigue resistant, and more aerodynamic than steel spokes. We offer both 3rd and 4th gen carbon spokes, allowing you to customize your wheelset.
Unlike earlier carbon spokes, ours are fully replaceable and can trued just like steel ones. Our also feature non-round spoke heads, preventing spoke twist, ensuring they are always in the most aerodynamic orientation.
They can withstand 4000 newtons of tension. Steel spokes break under loads of 2600-3200 newtons. Since our carbon spokes do not lose tension over time, they do not need to be re-trued like steel spoke wheels.
3rd Generation Carbon Spokes
Our 5.2mm 3rd gen carbon spokes are the stiffest and most aero option. They are just 0.9mm thick and weigh only 3.5g including nipples. They are 30% stiffer than steel spokes, allowing for us to reduce spoke count, improving aerodynamics without sacrificing strength and stiffness.
4th Generation Carbon Spokes
4th gen carbon spokes are designed to reduce weight and to offer improved compliance and comfort. They absorb vibration better, mimicking steel spokes. The spokes are 3.2mm wide, less than 1mm thick, and weigh just 2.1g including nipples. The are our most popular option, as they offer a 55g weight savings.
Hyperlight Rims
Beyond UCI Testing
At Particle, we think that a high-performance wheelset needs to be tested as thoroughly as possible before release. Our wheelsets need to pass more than two dozen tests before they are released.
Recently viewed
ヒルクライム用リムブレーキバイクの完成を目指して4世代スポーク、40/50を購入しました。
実重量はリムテープ込で1098gと公称値未満でした。
残念ながら購入後、納品前に足首を負傷してしまい全力走行はできおらず回復途中で2回乗った感想です。
怪我の影響で普段の約65％程度の出力しか出せない中、負荷を抑えるため平坦中心のライドをしました。信号が多く単調なルートでしたが、このホイールでは加速が異常に軽く感じられ33km/hくらいまで軽くペダリングするだけで出せることに驚きました。
高出力を出せない状況でもロードバイクの楽しさを引き出してくれる軽快なホイールです。
後日の軽い丘陵ライドでは痛みからさらに出力が落ちる状況でしたが、〜7％程度の登りは苦になりませんでした。
脚質による相性はあると思いますが一般レベルから幅広いユーザーが楽しめるホイールだと思います。
ホイールの剛性も十分にありスポークテンションを上げなくても弱さは一切感じません。
とても気に入ったのでディスクブレーキ用も購入するつもりです。
よかったです
素晴らしい商品です。疑問にも真摯に対応していただきました。ありがとうございました。
Kenji様
フィードバックありがとうございます。以前、リムの写真をお送りいただき、メールでこの件についてご相談させていただきました。ご指摘いただいた箇所は、実際には傷ではなく、リムを構成する2枚のカーボンファイバーの接合部です。そのため、薄い塗装の下では、一方向性カーボンファイバーの繊維方向と同じ方向に線が走っているのです。カーボンファイバーの繊維が見える無塗装仕上げ（ハイパーライトシリーズと同様）または、接合部が見えないように塗装を施した仕上げのいずれかで、新しいホイールをご提供いたします。ご希望に沿えるよう努めます。
敬具
パトリック
I’m planning to use this for brevets, and so far, I’m very impressed. It makes cruising feel much more effortless, and I noticed a definite boost in performance on inclines up to about 3%.
My only slight concern is the long-term maintenance, specifically how to handle wheel truing as I put more kilometers on them. Overall, I am very satisfied with the purchase!
Hello. Thank you for sharing your experience with the CCX Ultralight wheels.
Regarding your concern about long-term maintenance, there is nothing to worry about. Carbon spokes do not fatigue, and our spokes due not expereience spoke twist, so they will remain true. If for any reason a spoke does need to be replaced, it is a very simply process, just like with steel spokes.
If you have any questions whatsoever, please feel free to send us a message.
Las ruedas cumplen con lo que indican en la página, han pesado 1066 con el fondo de llanta, en marcha es una sensación de ligereza increíble, estéticamente son muy bonitas,yo mejoraría los anclajes de los radios, los pondría como los que traen las de discos, perfilados y más redondeados, y la brida trasera izquierda le pondría algún tipo de tapa para que no diese opción en caso de rotura que se suelte el radio. El envío fue también como me dijeron, tardaron más de lo habitual por falta de material, tienen muchos modelos y no tienen existencias en almacén de todos, en todo momento me han estado respondiendo a las consultas que les hacía por el chat de la página, dar las gracias personalmente a Patrick por el trato y por contestar a todas las dudas, La bicicleta a quedado increíble con las ruedas, las he montado con unas cubiertas de 26 mm por ser un cuadro del 2018, le puede entrar 28 pero quedaría muy justo, para los lugares donde salgo van bien, carreteras buenas. Muy contento de momento, espero hacerles muchos km.
