{"product_id":"bola-ce-50r-carbon-disc-wheelset-700c-50mm-deep-28-30mm-wide-dt-swiss-350s-hub-1320g","title":"Bola SL 40R Carbon Disc Wheelset 700C – 40mm Deep, 28\/30mm Wide, DT Swiss 350s Hub, 1320g","description":"\u003cp\u003eThe Bola SL 40R Carbon Disc Wheelset offers a 40mm deep T800 UD matte carbon fiber rim for a balance of aerodynamic efficiency and crosswind stability, making it suitable for both road and gravel riding with 28–32c tire compatibility. The DT Swiss 350s hub features a 36T ratchet for rapid engagement and reliable power transfer, while Sapim CX-Ray spokes maintain strength and reduce rotational weight. Certified to ISO 4210-7 and REACH standards, this 1320g wheelset meets professional durability and safety requirements for competitive endurance and advanced performance.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRim Depth:\u003c\/strong\u003e 40mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRim Width:\u003c\/strong\u003e Internal 21\/24mm, External 28\/30mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e T800 UD matte carbon fiber\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHub:\u003c\/strong\u003e DT Swiss 350s, 36T ratchet, Center Lock, 12x100\/12x142mm thru-axle\/QR\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1320g (excluding tape and valves)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpokes:\u003c\/strong\u003e Sapim CX-Ray, straight-pull, 24\/24 2-cross\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTire Compatibility:\u003c\/strong\u003e Tubeless \u0026amp; clincher, 28–32c optimized\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e ISO 4210-7, REACH compliant\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSituational Fit \u0026amp; Use\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRoad and Gravel:\u003c\/strong\u003e Optimized rim shape provides efficiency on tarmac and control on hardpack or mixed surfaces.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEndurance \u0026amp; Racing:\u003c\/strong\u003e 1320g combined weight aids in both climbing and sustained speed; wide profile supports traction and comfort at lower pressures.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCustomization:\u003c\/strong\u003e Choice of internal rim widths (21\/24mm) and external widths (28\/30mm) allows fitment for diverse cycling setups.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eComparison Table\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eDepth (mm)\u003c\/th\u003e\n\u003cth\u003eWeight (g)\u003c\/th\u003e\n\u003cth\u003eHub\u003c\/th\u003e\n\u003cth\u003eInternal Width (mm)\u003c\/th\u003e\n\u003cth\u003eTire Range (c)\u003c\/th\u003e\n\u003cth\u003eCertifications\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBola SL 40R\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e1320\u003c\/td\u003e\n\u003ctd\u003eDT Swiss 350s 36T\u003c\/td\u003e\n\u003ctd\u003e21\/24\u003c\/td\u003e\n\u003ctd\u003e28–32\u003c\/td\u003e\n\u003ctd\u003eISO 4210-7, REACH\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eHUNT 40 Carbon Disc\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e1451\u003c\/td\u003e\n\u003ctd\u003eRatchet System\u003c\/td\u003e\n\u003ctd\u003e21\u003c\/td\u003e\n\u003ctd\u003e25–35\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAERO 40 II Disc\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e1177\u003c\/td\u003e\n\u003ctd\u003eD91 45T\u003c\/td\u003e\n\u003ctd\u003e23\u003c\/td\u003e\n\u003ctd\u003e28–32\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails class=\"gfai-product-faq\" open\u003e\u003csummary\u003e\u003cstrong\u003eAre 40mm deep carbon disc wheels good for both road and gravel riding?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes. The 40mm depth and wide external profile provide balanced aerodynamics and stability, making them suitable for both fast road sections and variable gravel terrain.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"gfai-product-faq\" open\u003e\u003csummary\u003e\u003cstrong\u003eHow does a 1320g carbon wheelset with DT Swiss 350s hubs compare to others at this price?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eAt 1320g, this wheelset is lighter than many competitors in its segment. DT Swiss 350s hubs are recognized for reliability and quick engagement, offering dependable performance for both racing and training.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"gfai-product-faq\" open\u003e\u003csummary\u003e\u003cstrong\u003eWhat's the benefit of Sapim CX-Ray spokes for carbon bicycle wheels?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eSapim CX-Ray spokes are aero-optimized, lightweight, and proven to increase wheel strength while minimizing flex, contributing to both ride quality and longevity.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"gfai-product-faq\" open\u003e\u003csummary\u003e\u003cstrong\u003eIs this wheelset compatible with 28–32c tires for endurance and racing use?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes. Both the internal width options and external profile are optimized for 28–32c tubeless or clincher tires, supporting comfort and grip for racing and long endurance rides.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"gfai-product-faq\" open\u003e\u003csummary\u003e\u003cstrong\u003eAre there lighter or more aero alternatives to 50mm deep carbon disc wheelsets for climbing?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eWhile deeper rims such as 50mm offer increased aerodynamic benefit at high speed, 40mm deep wheels like the Bola SL 40R are lighter and provide better handling for climbing and mixed-terrain rides.\u003c\/p\u003e\u003c\/details\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"Bola SL 40R Carbon Disc Wheelset 700C – 50mm Deep, 28\/30mm Wide, DT Swiss 350s Hub,1320g\",\n  \"description\": \"The Bola SL 40R Carbon Disc Wheelset offers a 40mm deep T800 UD matte carbon fiber rim for a balance of aerodynamic efficiency and crosswind stability, making it suitable for both road and gravel riding with 28–32c tire compatibility. The DT Swiss 350s hub features a 36T ratchet for rapid engagement and reliable power transfer, while Sapim CX-Ray spokes maintain strength and reduce rotational weight. Certified to ISO 4210-7 and REACH standards, this 1320g wheelset meets professional durability and safety requirements for competitive endurance and advanced performance. Technical Specifications Rim Depth: 40mm Rim Width: Internal 21\/24mm, External 28\/30mm Material: T800 UD matte carbon fiber Hub: DT Swiss 350s, 36T ratchet, Center Lock, 12x100\/12x142mm thru-axle\/QR Weight: 1320g (excluding tape and valves) Spokes: Sapim CX-Ray, straight-pull, 24\/24 2-cross Tire Compatibility: Tubeless \u0026 clincher, 28–32c optimized Certifications: ISO 4210-7, REACH compliant Situational Fit \u0026 Use Road and Gravel: Optimized rim shape provides efficiency on tarmac and control on hardpack or mixed surfaces. Endurance \u0026 Racing: 1320g combined weight aids in both climbing and sustained speed; wide profile supports traction and comfort at lower pressures. Customization: Choice of internal rim widths (21\/24mm) and external widths (28\/30mm) allows fitment for diverse cycling setups. Comparison Table Model Depth (mm) Weight (g) Hub Internal Width (mm) Tire Range (c) Certifications Bola SL 40R 40 1320 DT Swiss 350s 36T 21\/24 28–32 ISO 4210-7, REACH HUNT 40 Carbon Disc 40 1451 Ratchet System 21 25–35 — AERO 40 II Disc 40 1177 D91 45T 23 28–32 — Frequently Asked Questions Are 40mm deep carbon disc wheels good for both road and gravel riding? Yes. The 40mm depth and wide external profile provide balanced aerodynamics and stability, making them suitable for both fast road sections and variable gravel terrain. How does a 1320g carbon wheelset with DT Swiss 350s hubs compare to others at this price? At 1320g, this wheelset is lighter than many competitors in its segment. DT Swiss 350s hubs are recognized for reliability and quick engagement, offering dependable performance for both racing and training. What's the benefit of Sapim CX-Ray spokes for carbon bicycle wheels? Sapim CX-Ray spokes are aero-optimized, lightweight, and proven to increase wheel strength while minimizing flex, contributing to both ride quality and longevity. Is this wheelset compatible with 28–32c tires for endurance and racing use? Yes. Both the internal width options and external profile are optimized for 28–32c tubeless or clincher tires, supporting comfort and grip for racing and long endurance rides. Are there lighter or more aero alternatives to 50mm deep carbon disc wheelsets for climbing? While deeper rims such as 50mm offer increased aerodynamic benefit at high speed, 40mm deep wheels like the Bola SL 40R are lighter and provide better handling for climbing and mixed-terrain rides.\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"Carbon Fiber Sporting Goods\"\n  },\n  \"category\": \"Carbon Road \u0026 Gravel Disc Wheelsets\",\n  \"image\": [\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/blackdtcswheel_5690275b-c1cc-4b2c-8f4c-8d98428571c9.png?v=1780048062\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/dtcshub.png?v=1780048062\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/dt35020_24wheel_dac8d7b2-5244-46a4-aacf-e6bdd43cbcf5.png?v=1780048062\"\n  ],\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"availability\": \"https:\/\/schema.org\/OutOfStock\",\n    \"price\": \"789.00\",\n    \"priceCurrency\": \"USD\",\n    \"url\": \"https:\/\/bolacarbon.com\/products\/bola-ce-50r-carbon-disc-wheelset-700c-50mm-deep-28-30mm-wide-dt-swiss-350s-hub-1320g\",\n    \"seller\": {\n      \"@type\": \"Organization\",\n      \"name\": \"https:\/\/bolacarbon.com\"\n    }\n  }\n}\n\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are 40mm deep carbon disc wheels good for both road and gravel riding?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The 40mm depth and wide external profile provide balanced aerodynamics and stability, making them suitable for both fast road sections and variable gravel terrain.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How does a 1320g carbon wheelset with DT Swiss 350s hubs compare to others at this price?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"At 1320g, this wheelset is lighter than many competitors in its segment. DT Swiss 350s hubs are recognized for reliability and quick engagement, offering dependable performance for both racing and training.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What's the benefit of Sapim CX-Ray spokes for carbon bicycle wheels?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Sapim CX-Ray spokes are aero-optimized, lightweight, and proven to increase wheel strength while minimizing flex, contributing to both ride quality and longevity.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is this wheelset compatible with 28–32c tires for endurance and racing use?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. 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