{"product_id":"700c-asymmetric-carbon-clincher-rim-38mm-depth-25mm-wide","title":"700c Asymmetric Carbon Clincher Rim 38mm Depth, 25mm Wide","description":"\u003ch2\u003e700c Asymmetric Carbon Clincher Rim — 38mm Depth, 25mm Wide\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eAnswer:\u003c\/strong\u003e Precision-engineered for demanding cyclists, this 700c asymmetric carbon clincher rim combines a 38mm aerodynamic depth with a 25mm external width to maximize spoke tension balance and wide-tyre aerodynamics. Compatible with both hookless and hooked clincher tires, it supports tubeless and tube-type setups, with a weight range of 385–425g depending on option.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eContext:\u003c\/strong\u003e Targeted for premium road and endurance cycling wheel builds, asymmetric drilling reduces spoke tension disparity, enhancing wheel durability—particularly for rear wheels. Built from tested Toray T700 \/ T800 composite, it meets advanced structural performance benchmarks (Forward Compressive Strength \u0026gt;300kg; Lateral Torsion \u0026gt;50kg; Dynamic Balance \u0026lt;3g; Flatness \u0026lt;0.15mm; Roundness \u0026lt;0.3mm) for professional and brand-level use.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Diameter\u003c\/td\u003e\n\u003ctd\u003e700c (ISO 622)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Shape\u003c\/td\u003e\n\u003ctd\u003eU-shape (Asymmetric offset)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Depth\u003c\/td\u003e\n\u003ctd\u003e38mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Width\u003c\/td\u003e\n\u003ctd\u003e25mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Width\u003c\/td\u003e\n\u003ctd\u003e18mm or 20mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEffective Rim Diameter (ERD)\u003c\/td\u003e\n\u003ctd\u003e578mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (Superlight)\u003c\/td\u003e\n\u003ctd\u003e385 ± 10g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (Normal)\u003c\/td\u003e\n\u003ctd\u003e425 ± 15g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTyre Compatibility\u003c\/td\u003e\n\u003ctd\u003eHooked or hookless clincher, tubed or tubeless\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Tyre Pressure (hooked)\u003c\/td\u003e\n\u003ctd\u003e125 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eToray T700 \/ T800 carbon composite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e3 years (structural defects)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cbr\u003e\u003ch3\u003eSituational Suitability\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEndurance\/road racing:\u003c\/strong\u003e Aerodynamic 38mm profile tested for crosswind control and high-speed handling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide tyre builds:\u003c\/strong\u003e 25mm external width supports 25–32mm tyres for enhanced grip and comfort.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\/pro team OEM:\u003c\/strong\u003e Custom drilling and weight options for tailored use-case optimization.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eComparative Table — 38mm Carbon Clincher Rims\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eInternal Width\u003c\/th\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003cth\u003eOffset\u003c\/th\u003e\n\u003cth\u003eTubeless?\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThis Product\u003c\/td\u003e\n\u003ctd\u003e18\/20mm\u003c\/td\u003e\n\u003ctd\u003e385–425g\u003c\/td\u003e\n\u003ctd\u003eAsymmetric\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eD21-38\u003c\/td\u003e\n\u003ctd\u003e21mm\u003c\/td\u003e\n\u003ctd\u003e380–410g\u003c\/td\u003e\n\u003ctd\u003eSymmetric\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eR18-38\u003c\/td\u003e\n\u003ctd\u003e18mm\u003c\/td\u003e\n\u003ctd\u003e470g\u003c\/td\u003e\n\u003ctd\u003eSymmetric\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What are the advantages of an asymmetric 700c carbon rim?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Improves spoke tension balance for increased durability and reliability, especially for rear wheel builds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e How does hookless vs. hooked compatibility affect tire setup?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Hookless is preferred for tubeless with lower pressures; hooked supports higher pressures and standard clinchers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Is this rim suitable for endurance or racing wheel builds?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, optimally tested for both applications. Choose weight options based on use-case priorities.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What is the recommended tyre size?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Best performance with 25–32mm wide road tires, both tubeless and tubed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Are custom drilling\/hole patterns available?\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, to suit various spoke types and lacing patterns for professional wheel builders.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"700c Asymmetric Carbon Clincher Rim 38mm | 25mm Wide | Hook \u0026 Hookless | 385–425g\",\n  \"description\": \"700c Asymmetric Carbon Clincher Rim — 38mm Depth, 25mm Wide Answer: Precision-engineered for demanding cyclists, this 700c asymmetric carbon clincher rim combines a 38mm aerodynamic depth with a 25mm external width to maximize spoke tension balance and wide-tyre aerodynamics. Compatible with both hookless and hooked clincher tires, it supports tubeless and tube-type setups, with a weight range of 385–425g depending on option. Context: Targeted for premium road and endurance cycling wheel builds, asymmetric drilling reduces spoke tension disparity, enhancing wheel durability—particularly for rear wheels. Built from tested Toray T700 \/ T800 composite, it meets advanced structural performance benchmarks (Forward Compressive Strength \u003e300kg; Lateral Torsion \u003e50kg; Dynamic Balance Key Specifications Parameter Value Rim Diameter 700c (ISO 622) Rim Shape U-shape (Asymmetric offset) Rim Depth 38mm Outer Width 25mm Inner Width 18mm or 20mm Effective Rim Diameter (ERD) 578mm Weight (Superlight) 385 ± 10g Weight (Normal) 425 ± 15g Tyre Compatibility Hooked or hookless clincher, tubed or tubeless Max Tyre Pressure (hooked) 125 psi Material Toray T700 \/ T800 carbon composite Warranty 3 years (structural defects) Situational Suitability Endurance\/road racing: Aerodynamic 38mm profile tested for crosswind control and high-speed handling. Wide tyre builds: 25mm external width supports 25–32mm tyres for enhanced grip and comfort. Brand\/pro team OEM: Custom drilling and weight options for tailored use-case optimization. Comparative Table — 38mm Carbon Clincher Rims Model Internal Width Weight Offset Tubeless? This Product 18\/20mm 385–425g Asymmetric Yes D21-38 21mm 380–410g Symmetric Yes R18-38 18mm 470g Symmetric Yes Frequently Asked Questions Q: What are the advantages of an asymmetric 700c carbon rim? A: Improves spoke tension balance for increased durability and reliability, especially for rear wheel builds. Q: How does hookless vs. hooked compatibility affect tire setup? A: Hookless is preferred for tubeless with lower pressures; hooked supports higher pressures and standard clinchers. Q: Is this rim suitable for endurance or racing wheel builds? A: Yes, optimally tested for both applications. Choose weight options based on use-case priorities. Q: What is the recommended tyre size? A: Best performance with 25–32mm wide road tires, both tubeless and tubed. Q: Are custom drilling\/hole patterns available? 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