ProX 650b Carbon Rims 27.5 Mountain Bike Rim Tubeless Ready

PROX specializes in the design, R&D, and manufacturing of bike carbon rims, as well as carbon wheels building. Founded in 2015 in Xiamen City, China, PROX has grown steadily over more than a decade and now offers a diverse product range of carbon rims and carbon wheels for Road, Gravel, Time Trial/Triathlon, MTB, e-MTB, BMX, Folding and Fat bikes.  2015 - PROX team was founded by a group of experienced engineers who had ever worked at Specialized OEM carbon rim factory. In its early stage, PROX focused primarily on carbon Road rims. 2016 - Carbon fat bike rims and BMX rims were added to our product portfolio. 2017 - Our product range expanded further to include MTB and e-MTB carbon rims. 2018 - We established wheel-building workshop and began in-house assembly of complete carbon wheels. 2019 – LightCarbon (China leading carbon frame manufacturer) invested in PROX, forming a strategic partnership. PROX focuses on carbon rims and wheels, while LightCarbon focuses on carbon frameset. Since then, both PROX and LightCarbon are able to supply carbon rims, carbon wheels and carbon frameset, with same factory price. So it is convenient for customers to do one-stop purchasing from either team.   In 2023, Carbon gravel rims were officially introduced, further strengthening PROX’s product range. Today, PROX continues to refine rim designs, optimize manufacturing processes, and expand OEM/ODM cooperation with bicycle brands worldwide.  Why Choose PROX? Whether you are launching a new bike brand or expanding an existing lineup, PROX delivers tailored carbon solutions from initial design to full-scale production.  1. OEM & ODM Services  Custom Logo & Paint Logo customization with precise size, color, placement, and finishing options, including water decals, non-paint water transfer and matte or glossy clear coating. In addition to logo application, PROX offers a wide range of custom paint options such as chameleon, fade, crystal effects, pearl finishes, and more.   Custom Packaging Personalized packaging solutions(including branded cartons, protective materials, labels, and box artwork)to reinforce your brand identity and make them safe in oversea shipping.   Custom Rim Specifications For open mold carbon rims, PROX offers customization of rim drilling patterns, spoke holes, Presta or Schrader valve holes, as well as various rim finish, such as UD Naked Carbon, Black Matte, Marble Finish, and more.   Custom Wheel Specifications We provide various wheelset configurations using proven hubs and spokes. Hub options include DT Swiss 180, 240, 350 hubs, as well as PROX own mold hub models such as C52DB, C67DB, C68DB, C69DB, R98, R65, G71DB, 88MB, 89MB, etc. Spoke options include Sapim CX-Ray, Race, Pillar 1420, 1423, as well as PROX own full carbon spokes CS1 and CS2. In addition, customers can also ship their own hubs to us for wheelset assembly.   Exclusive Rim & Wheel Development For brands who seek unique carbon rims or carbon wheels with full exclusivity, PROX also offers closed-mold carbon rim and wheel development service. Every exclusive design is protected by strict confidentiality and comes with long-term production support, exclusive sales and distribution rights — ensuring your brand’s uniqueness and product stability.  2. UCI Application Support PROX carbon rims are designed in accordance with the latest UCI technical regulations. We have some carbon road wheels already got UCI certificate, and our team has in-depth experience with the complete application process. If you want to get your wheels to be UCI approved, PROX team will give you full guide and help to arrange testing in our UCI verified testing equipment, helping your brand achieve UCI approval efficiently and with minimal risk.   3. Specialized Expertise Since found, PROX has been specialized in carbon rims and wheels. This specialization allows us to consistently enhance stiffness, weight efficiency, durability, and ride quality, delivering carbon rims and carbon wheels that meet the expectations of pro riders and demanding enthusiasts alike.   4. Premium Materials & Engineering Our rims are crafted from high-grade carbon fiber, including Toray T700, T800, T1100, etc. Supported by an experienced R&D team, each rim design is carefully optimized in fiber orientation, ply sequence, and material distribution, resulting in lightweight, strong, and stiff carbon rims across production batches.  5. Quality Control & Reliability At PROX, Quality Control is integrated into every production procedure: - Incoming quality control of raw material - In-process inspection during layup and molding - 100% tire inflation testing for a...