Disc Brake Symmetry
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LightCarbon Mid-range Widened Gravel Carbon Wheels Ratchet System Hub 700C Wheel For Gravel Bike • Gravel carbon wheels with widened carbon rims • C52DB mid-range hubs, with 36T ratchet system, ceramic bearings • Widened 26mm inner width, fit 700Cx35C-50C tires • With depth 40/45/50mm optional • Shimano 11/12s HG or SRAM 12s XDR optional • Pillar 1423 Spokes, aero & strong more
LightCarbon 3D Printed Carbon Saddle High-end Ultra Light Bike Seat Carbon - 3D printed saddle top, honeycomb structure - T800 carbon fiber saddle rail+base - Ultra light weight, only about 149g! - Stiffer 3D print material, more favorable for racing. - Length x Width = 245 x142mm - Rider weight limit 100kgs - Suit 7x9mm seat post clamp - Easy to clean more
LightCarbon Super Light Full Carbon Bottle Cage Bicycle Bottle Holder - Full carbon fiber material - UD Black matte finish - Customized logo is acceptable - Super Light weight, only around 19.5g more
LightCarbon Gravel Rims Widened 26mm Inner Width 700C Carbon Rims For Gravel Bike • Widened 26mm inner width, for 37C-50C tires • 40/45/50 height optional • Reinforced lay-up structure • Designed for CX/Gravel bikes • Tubeless ready • High quality, 2-year warranty more
29mm Width 700C Disc Brake Carbon Road Rims - Widened 23mm Inner Width (29mm outer width) - Optional rim depth: 38/45/50/55/60mm - Clincher (Tubeless Ready) - Wide U shape design, more aero and stiff - High quality carbon rims, with 2-year warranty more
Lightcarbon 3-Spoke Carbon Wheel 120mm Depth 28mm Wide Aero 700C Tri Spoke Carbon Wheel • 120mm depth, 28mm width, better aerodynamics • ProX hub with 36T Ratchet system • Tri-spoke carbon wheel for 700C Road/TT/Track bikes • Clincher (Tubeless), fit 700x28C-45C tire • Black/12K, Matte/Glossy finish optional • Disc-brake & Rim-brake version optional more
Lightcarbon Tri-Spoke Carbon Wheel Undulating Depth Wavy 3-Spoke Carbon Wheels 700C • 75-80mm undulating depth 3-spoke wheels • 28mm outer (22.5mm inner) width • OEM hub with 36T ratchet freehub system • 700C 3-spoke carbon wheel for Road/TT/Track bikes • Clincher (Tubeless), fit 700x30C-45C tire • Both Disc brake & Rim-brake optional more
- Widened 23mm Inner Width (29mm outer width)
- Optional rim depth: 38/45/50/55/60mm
- Clincher (Tubeless Ready)
- Wide U shape design, more aero and stiff
- High quality carbon rims, with 2-year warranty
item no.:
RD923-C Rimsproduct orgin:
Chinapayment:
Paypal, Bank transfercolor:
UD/3K(customized painting acceptable)
LightCarbon 700C Disc Brake Carbon Road Rims 29mm Outer Width (23mm Inner Width)
LightCarbon widened 23mm internal width carbon fiber road rim is released, to meet the increasing demand for wide tires. Aerodynamically optimized and available in five depth (38/45/50/55/60mm), this rim series redefines what’s possible on the road.
Designed for modern road bike riding, the wider rim profile supports larger (30-50C) tires, enhancing grip, comfort, and stability. Say goodbye to pinch flats and hello to smoother cornering and confident descents.
Aero Efficiency Meets Versatility: Choose your weapon
38mm: The ultimate climber’s choice—featherlight, responsive, and perfect for climbing.
45/50mm: The balanced all-rounders—agile enough and aerodynamic enough for solo breakaways.
55/60mm: Speed demons rejoice. Maximize aerodynamic gains on flats, time trials, and sprints with minimal crosswind compromise.
Your next breakthrough starts here: wider, faster, smarter.
Features:
- 29mm width symmetric design road carbon rim for disc brake (no brake surface).
- Reinforced nipple bed, can tolerate larger spoke tension for wheel building.
- New bead lock system, better tire holding, prevent air leaking.
- Wide U shape design, of better aerodynamics and stiffness.
- High quality carbon clincher rim with 2-year warranty.
700C Road Disc Brake Carbon Rims 29mm Outer (23mm inner) Width Carbon Bike Rims RD923 Specification:
| Model | RD923-38C | RD923-45C | RD923-50C | RD923-55C | RD923-60C |
| Terrain (Recommended) | Road | Road | Road | Road | Road |
| Material | T700+T800 | T700+T800 | T700+T800 | T700+T800 | T700+T800 |
| Weight(±15g) | 390g | 400g | 430g | 460g | 480g |
| Max Weight Limit | 115kg/253lb | 120kg/265lb | 120kg/265lb | 120kg/265lb |
125kg/275lb |
| Depth | 38mm | 45mm | 50mm | 55mm | 60mm |
| Sectional Drawing |
 |
 |
 |
 |
 |
| Outer Width | 28.5mm | 28.5mm | 28.5mm | 28.5mm | 28.5mm |
| Inner Width | 23mm | 23mm | 23mm | 23mm | 23mm |
| Spoke Holes | 21H/24H/28H/32H | 21H/24H/28H/32H | 21H/24H/28H/32H | 21H/24H/28H/32H | 21H/24H/28H/32H |
| ERD* | 564mm | 550mm | 540mm | 530mm | 520mm |
| Rim Bead | Hook | Hook | Hook | Hook | Hook |
| Tire Type | Tubeless or Clincher | Tubeless or Clincher | Tubeless or Clincher | Tubeless or Clincher | Tubeless or Clincher |
| Brake Type | Disc Brake | Disc Brake | Disc Brake | Disc Brake | Disc Brake |
| Max Spoke Tension | 130kgf | 130kgf | 130kgf | 130kgf | 130kgf |
| Max Tire Pressure | 125psi/8.6bar | 125psi/8.6bar | 125psi/8.6bar | 125psi/8.6bar | 125psi/8.6bar |
| Tire Size(Recommended) | 700*30C-50C | 700*30C-50C | 700*30C-50C | 700*30C-50C | 700*30C-50C |
* ERD Calculation
ERD is short for effective rim diameter, it is the maximum distance that spokes bridge going from one end of the rim to another.
How do we calculate the ERD of our rims? Below are calculation equation and sketch for your reference:
ERD=Rim outer diameter-(rim depth)*2+(Rim nipple bed thickness)*2
For example：
ERD of RD923-38C rim=633mm-38mm*2+3.5mm*2=564mm
Most people prefer ERD including the length of the nipple cap. However, customers may use different nipples and components for building. Please add the height of the nipple cap(2.5mm~3mm generally) for your spoke calculation. If the height of the nipple cap is 3mm, then ERD of your PRD29-38C rim is 564mm+3mm*2=570mm
A: Rim nipple bed thickness (=3.5mm)
B: Length of nipple cap (2.5mm~3mm generally)
We will reply you within 24h after received your inquiry
- 25mm width symmetric disc brake road carbon clincher rim. - Reinforced nipple bed for larger spoke tension. - Wide U shape design, better aerodynamics and stiffness. - High quality carbon clincher rim with competitive price.
- Unique butterfly weave carbon rims - 33/38/45/50/55mm depths optional - 28mm outer width, 21mm inner width - Matte and glossy finish optional - Clincher (tubeless ready) - Designed for disc brake use - 2 years' quality warranty
- 28mm width symmetric disc brake road carbon clincher rim. - Reinforced nipple bed for larger spoke tension. - Wide U shape design, better aerodynamics and stiffness. - High quality carbon clincher rim with competitive price.
- Full Toray T700 Carbon fiber - Length 400mm, 0 offset (straight) - Outer diameter 27.2mm and 31.6mm optional - Compatible for both round (7X7mm) and oval (7X9mm) saddle rails - 2 years' quality warranty
- 25mm wide tubular carbon rim. - Reinforced nipple bed for larger spoke tension. - Wide U shape design, better aerodynamics and stiffness. - High quality carbon tubular rim with competitive price.
- Full carbon 29er hardtail xc frameset - High modulus Toray T700 carbon fiber - 12*148mm boost version - 2 years quality warranty
email : info@lightcarbon.com
add : 4/F, NO.3 Bldg, Longtou Industrial Zone, NO.9 Xingmei Road, Xiamen, 361022, China
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