{"product_id":"700c-carbon-tubeless-rim-50mm-30mm-wide-ultralight-375-470g-road-bike","title":"700c Carbon Tubeless Rim 50mm | 30mm Wide | Ultralight 375–470g | Road Bike","description":"\u003ch2\u003e700c Carbon Tubeless Rim — 50mm Profile, 30mm Outer Width\u003c\/h2\u003e\u003cp\u003eThis 700c carbon tubeless rim delivers a verified weight range of \u003cstrong\u003e375g–470g per rim\u003c\/strong\u003e (four weight tiers available) across a 50mm aerodynamic profile and 30mm outer \/ 24–25mm inner width. Designed for road and gravel builds prioritising climbing efficiency, tubeless compatibility, and lateral stiffness.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e700c (ISO 622mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Profile\u003c\/td\u003e\n\u003ctd\u003eV-shape, 50mm height\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Width\u003c\/td\u003e\n\u003ctd\u003e30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Width\u003c\/td\u003e\n\u003ctd\u003e24mm or 25mm (specify at order)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eERD\u003c\/td\u003e\n\u003ctd\u003e538mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (Normal)\u003c\/td\u003e\n\u003ctd\u003e470 ± 15g per rim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (Superlight)\u003c\/td\u003e\n\u003ctd\u003e430 ± 10g per rim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (Ultralight)\u003c\/td\u003e\n\u003ctd\u003e400 ± 10g per rim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (Extreme Light)\u003c\/td\u003e\n\u003ctd\u003e375 ± 10g per rim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForward Compressive Strength\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;300 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLateral Torsion\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;50 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpoke Hole Tension\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;280 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDynamic Equilibrium\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;3g imbalance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlatness Tolerance\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.15mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoundness Tolerance\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.3mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e6.5mm (customisable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpoke Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e4.5mm (customisable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembly Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e7.5mm (customisable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNipple Offset (Front)\u003c\/td\u003e\n\u003ctd\u003e7°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNipple Offset (Rear)\u003c\/td\u003e\n\u003ctd\u003e5° or 7° (customisable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTyre Pressure Range\u003c\/td\u003e\n\u003ctd\u003e100–125 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Rider Weight\u003c\/td\u003e\n\u003ctd\u003e120 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWeight Tier Guide — Which Option Is Right for Your Build?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNormal (470g):\u003c\/strong\u003e Recommended for all-day training and heavier riders up to 120 kg. Higher spoke tension tolerance provides long-term durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperlight (430g):\u003c\/strong\u003e Balanced option for race-training hybrids where longevity and weight savings are both priorities.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltralight (400g):\u003c\/strong\u003e Suited to competitive road events and climbers targeting sub-1,400g wheelset builds. Note: reduced layup thickness versus Normal tier — inspect regularly under hard training loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtreme Light (375g):\u003c\/strong\u003e Race-day performance tier. Best for riders under 75 kg on smooth road surfaces. Not recommended for prolonged training use or rough tarmac.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e30mm Wide Rim — Tubeless Compatibility\u003c\/h2\u003e\u003cp\u003eA 30mm outer \/ 24–25mm inner width accommodates tubeless tyres from \u003cstrong\u003e25c to 32c\u003c\/strong\u003e, optimising the tyre profile for improved contact patch and cornering grip compared to narrower 19–21mm internal rims. The hookless-compatible bead seat design supports modern tubeless-ready (TLR) tyres at pressures up to 125 psi.\u003c\/p\u003e\u003ch2\u003eKnown Tradeoffs\u003c\/h2\u003e\u003cp\u003eThe 50mm rim height provides measurable aerodynamic advantage at speeds above 35 km\/h, but adds \u003cstrong\u003eapproximately 80–120g per rim\u003c\/strong\u003e versus a 35mm equivalent — a relevant consideration for technical climbing stages where rotating mass outweighs aero gain. Riders targeting pure climbing builds may prefer a 35mm profile; this 50mm rim is best suited to \u003cstrong\u003eflat-to-rolling terrain and criterium racing\u003c\/strong\u003e.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat is the best carbon tubeless rim for lightweight road cycling builds?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eFor a lightweight road build, the Ultralight (400g) or Extreme Light (375g) tiers of this rim pair well with 25c or 28c tubeless tyres. The 30mm outer width is wide enough to optimise tyre profile without adding unnecessary rim mass.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eHow much does rim weight affect climbing performance?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eRotating mass has approximately 1.5–2× the effect of static frame weight on climbing acceleration. Reducing each rim by 70g (Normal to Ultralight) saves roughly 140g of rotating mass per wheelset — measurable on sustained climbs above 6% gradient.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat is the difference between 50mm and 60mm carbon rims for training?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003e50mm rims offer a better crosswind stability-to-aero balance for everyday training, particularly in variable wind conditions. 60mm rims deliver greater straight-line aero efficiency but are more sensitive to crosswinds above ~30 km\/h gusts.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eAre 30mm wide carbon rims better than 25mm for tubeless tyre grip?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes, for tyres 25c and wider. A 30mm outer rim allows the tyre to assume a more rounded profile, improving the contact patch shape and reducing rolling resistance by approximately 3–5 watts at 40 km\/h versus a 23mm internal rim (based on published tyre manufacturer data).\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat should I look for when buying ultralight carbon rims under 400g?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eVerify spoke hole tension rating (this rim: \u0026gt;280 kg), forward compressive strength (\u0026gt;300 kg), and flatness tolerance (\u0026lt;0.15mm). Confirm the weight tier is a per-rim figure, not per-pair, and check the maximum rider weight rating (this rim: 120 kg).\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"700c super or ultra even extreme light bici tubeless carbon rims 50mm high profile 30mm outer wide,Bola\",\n  \"description\": \"700c Carbon Tubeless Rim — 50mm Profile, 30mm Outer Width This 700c carbon tubeless rim delivers a verified weight range of 375g–470g per rim (four weight tiers available) across a 50mm aerodynamic profile and 30mm outer \/ 24–25mm inner width. Designed for road and gravel builds prioritising climbing efficiency, tubeless compatibility, and lateral stiffness. Technical Specifications Parameter Value Diameter 700c (ISO 622mm) Rim Profile V-shape, 50mm height Outer Width 30mm Inner Width 24mm or 25mm (specify at order) ERD 538mm Weight (Normal) 470 ± 15g per rim Weight (Superlight) 430 ± 10g per rim Weight (Ultralight) 400 ± 10g per rim Weight (Extreme Light) 375 ± 10g per rim Forward Compressive Strength \u0026gt;300 kg Lateral Torsion \u0026gt;50 kg Spoke Hole Tension \u0026gt;280 kg Dynamic Equilibrium \u0026lt;3g imbalance Flatness Tolerance \u0026lt;0.15mm Roundness Tolerance \u0026lt;0.3mm Valve Hole Diameter 6.5mm (customisable) Spoke Hole Diameter 4.5mm (customisable) Assembly Hole Diameter 7.5mm (customisable) Nipple Offset (Front) 7° Nipple Offset (Rear) 5° or 7° (customisable) Tyre Pressure Range 100–125 psi Max Rider Weight 120 kg Weight Tier Guide — Which Option Is Right for Your Build? Normal (470g): Recommended for all-day training and heavier riders up to 120 kg. Higher spoke tension tolerance provides long-term durability. Superlight (430g): Balanced option for race-training hybrids where longevity and weight savings are both priorities. Ultralight (400g): Suited to competitive road events and climbers targeting sub-1,400g wheelset builds. Note: reduced layup thickness versus Normal tier — inspect regularly under hard training loads. Extreme Light (375g): Race-day performance tier. Best for riders under 75 kg on smooth road surfaces. Not recommended for prolonged training use or rough tarmac. 30mm Wide Rim — Tubeless Compatibility A 30mm outer \/ 24–25mm inner width accommodates tubeless tyres from 25c to 32c , optimising the tyre profile for improved contact patch and cornering grip compared to narrower 19–21mm internal rims. The hookless-compatible bead seat design supports modern tubeless-ready (TLR) tyres at pressures up to 125 psi. Known Tradeoffs The 50mm rim height provides measurable aerodynamic advantage at speeds above 35 km\/h, but adds approximately 80–120g per rim versus a 35mm equivalent — a relevant consideration for technical climbing stages where rotating mass outweighs aero gain. Riders targeting pure climbing builds may prefer a 35mm profile; this 50mm rim is best suited to flat-to-rolling terrain and criterium racing . Frequently Asked Questions What is the best carbon tubeless rim for lightweight road cycling builds? For a lightweight road build, the Ultralight (400g) or Extreme Light (375g) tiers of this rim pair well with 25c or 28c tubeless tyres. The 30mm outer width is wide enough to optimise tyre profile without adding unnecessary rim mass. How much does rim weight affect climbing performance? Rotating mass has approximately 1.5–2× the effect of static frame weight on climbing acceleration. Reducing each rim by 70g (Normal to Ultralight) saves roughly 140g of rotating mass per wheelset — measurable on sustained climbs above 6% gradient. What is the difference between 50mm and 60mm carbon rims for training? 50mm rims offer a better crosswind stability-to-aero balance for everyday training, particularly in variable wind conditions. 60mm rims deliver greater straight-line aero efficiency but are more sensitive to crosswinds above ~30 km\/h gusts. Are 30mm wide carbon rims better than 25mm for tubeless tyre grip? Yes, for tyres 25c and wider. A 30mm outer rim allows the tyre to assume a more rounded profile, improving the contact patch shape and reducing rolling resistance by approximately 3–5 watts at 40 km\/h versus a 23mm internal rim (based on published tyre manufacturer data). What should I look for when buying ultralight carbon rims under 400g? Verify spoke hole tension rating (this rim: \u0026gt;280 kg), forward compressive strength (\u0026gt;300 kg), and flatness tolerance (\u0026lt;0.15mm). Confirm the weight tier is a per-rim figure, not per-pair, and check the maximum rider weight rating (this rim: 120 kg).\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"Carbon Fiber Sporting Goods\"\n  },\n  \"category\": \"U shape\",\n  \"image\": [\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/50tr30.jpg?v=1729825411\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/5030.png?v=1729825411\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/tubeless_2d236823-c069-4581-9a8b-1fc9dd7a0b4b.jpg?v=1767150768\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/surface_f1230322-3ddf-4fd0-b237-7adb3e4ce7e9.jpg?v=1767150768\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/redbola_8887e641-3de0-41c4-a66e-78e20cb4c614.jpg?v=1767150768\",\n    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