{"product_id":"bola-st-40c-dt-swiss-350s-carbon-road-wheelset-40mm-rim-brake-tubeless-25mm-28mm-wide-1330g","title":"Bola ST 40C DT Swiss 350S Carbon Road Wheelset, 40mm Rim Brake, Tubeless, 25mm\/28mm Wide, 1330g","description":"\u003cp\u003eThe Bola ST 40C DT Swiss 350S carbon road wheelset offers a balanced 40mm rim depth for improved aerodynamics and reliable handling in variable terrain, while weighing just 1,330g per pair. Designed for rim brake systems and certified to EN 14781 with a 100kg rider rating, it meets demanding performance and safety requirements for road cyclists—from climbing and endurance events to daily commuting.\u003c\/p\u003e\n\u003ch2\u003eKey Features \u0026amp; Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRim Matrtial:\u003c\/strong\u003eT700\/T800,UD Matt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRim Depth:\u003c\/strong\u003e 40mm—balances aerodynamic efficiency and crosswind stability for road, sport, and club riding.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRim Width:\u003c\/strong\u003e 25mm or 28mm external; 17mm or 21mm internal—optimizes tire contact for 25c–30c road tires.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1,330g ±20g (tubeless ready; without accessories).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrake Interface:\u003c\/strong\u003e Rim brake—machined carbon surface for consistent stopping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHubs:\u003c\/strong\u003e DT Swiss 350S—reliable engagement and proven durability for high-mileage use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpokes:\u003c\/strong\u003e Sapim CX Ray; front 20 (radial), rear 24 (2 cross)—high strength-to-weight and aerodynamics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAxle Standards:\u003c\/strong\u003e 100*130 QR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertification:\u003c\/strong\u003e EN 14781, supports up to 100kg rider weight.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePerformance Comparison\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eBola ST 40C\u003c\/th\u003e\n\u003cth\u003eTypical 50mm Wheelset\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRim Depth\u003c\/td\u003e\n\u003ctd\u003e40mm\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (pair)\u003c\/td\u003e\n\u003ctd\u003e1330g\u003c\/td\u003e\n\u003ctd\u003e1250–1550g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWind Stability\u003c\/td\u003e\n\u003ctd\u003eHigh (moderate crosswind sensitivity)\u003c\/td\u003e\n\u003ctd\u003eLower (increased crosswind impact)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClimbing Efficiency\u003c\/td\u003e\n\u003ctd\u003eOptimized\u003c\/td\u003e\n\u003ctd\u003eTypically lower (heavier)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eUse-Case Alignment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eClimbing:\u003c\/strong\u003e Lightweight, mid-depth design reduces rotational mass for improved uphill performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEndurance:\u003c\/strong\u003e Certified structure supports high mileage and heavier riders up to 100kg.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommuting:\u003c\/strong\u003e Tubeless compatibility and rim brake reliability ensure daily functionality and versatility.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails class=\"gfai-product-faq\" open=\"\"\u003e\n\u003csummary\u003e\u003cstrong\u003eWhat are the best carbon wheelsets for rim brake road bikes under 1400g?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eThe Bola ST 40C DT Swiss 350S wheelset is a competitive choice, offering a 1,330g weight, EN 14781 certification, and proven DT Swiss 350S hubs. Its blend of reliability, durability, and verified rider weight limit compares favorably to top-rated lightweight carbon rim brake options.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"gfai-product-faq\" open=\"\"\u003e\n\u003csummary\u003e\u003cstrong\u003eIs a 40mm carbon wheelset good for both climbing and endurance riding?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eYes. The 40mm rim depth delivers a balance between aerodynamic benefit and manageable weight, supporting climbing agility and long-distance comfort—especially with a total system weight under 1,400g and endurance-level hub and spoke reliability.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"gfai-product-faq\" open=\"\"\u003e\n\u003csummary\u003e\u003cstrong\u003eWhat should I look for when buying a tubeless carbon wheelset for rim brake?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eKey factors include EN 14781 or equivalent strength certification, a durable and consistent rim brake surface, verified tubeless readiness (compatible rim width and hook), proven hub durability, and explicit weight and rider load ratings—such as the criteria met by the Bola ST 40C.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"gfai-product-faq\" open=\"\"\u003e\n\u003csummary\u003e\u003cstrong\u003eHow does a 40mm carbon rim compare to 50mm for everyday road cycling?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003e40mm rim depth generally improves crosswind stability and reduces overall wheel weight, making it better suited for climbing, variable terrain, and daily use compared to 50mm profiles, which favor raw aerodynamic gains at higher speed but may add rotational mass and crosswind sensitivity.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"gfai-product-faq\" open=\"\"\u003e\n\u003csummary\u003e\u003cstrong\u003eCan a carbon tubeless wheelset handle a 100kg rider safely on rim brakes?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cp\u003eThe Bola ST 40C DT Swiss 350S meets EN 14781 certification for up to 100kg rider weight. Testing for structural integrity, rim bed, and braking surface ensures safety for heavier cyclists, provided installation and tire compatibility are properly observed.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cp\u003e\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"Bola ST 40C DT Swiss 350S carbon road wheels,40mm Tubeless,25mm or 28mm wide,1330g\",\n  \"description\": \"The Bola ST 40C DT Swiss 350S carbon road wheelset offers a balanced 40mm rim depth for improved aerodynamics and reliable handling in variable terrain, while weighing just 1,330g per pair. Designed for rim brake systems and certified to EN 14781 with a 100kg rider rating, it meets demanding performance and safety requirements for road cyclists—from climbing and endurance events to daily commuting. Key Features \u0026 Specifications Rim Depth: 40mm—balances aerodynamic efficiency and crosswind stability for road, sport, and club riding. Rim Width: 25mm or 28mm external; 17mm or 21mm internal—optimizes tire contact for 25c–30c road tires. Weight: 1,330g ±20g (tubeless ready; without accessories). Brake Interface: Rim brake—machined carbon surface for consistent stopping. Hubs: DT Swiss 350S—reliable engagement and proven durability for high-mileage use. Spokes: Sapim CX Ray; front 20 (radial), rear 24 (2 cross)—high strength-to-weight and aerodynamics. Axle Standards: Front O.L.D 100mm. Certification: EN 14781, supports up to 100kg rider weight. Performance Comparison Feature Bola ST 40C Typical 50mm Wheelset Rim Depth 40mm 50mm Weight (pair) 1330g 1250–1550g Wind Stability High (moderate crosswind sensitivity) Lower (increased crosswind impact) Climbing Efficiency Optimized Typically lower (heavier) Use-Case Alignment Climbing: Lightweight, mid-depth design reduces rotational mass for improved uphill performance. Endurance: Certified structure supports high mileage and heavier riders up to 100kg. Commuting: Tubeless compatibility and rim brake reliability ensure daily functionality and versatility. Frequently Asked Questions What are the best carbon wheelsets for rim brake road bikes under 1400g? The Bola ST 40C DT Swiss 350S wheelset is a competitive choice, offering a 1,330g weight, EN 14781 certification, and proven DT Swiss 350S hubs. Its blend of reliability, durability, and verified rider weight limit compares favorably to top-rated lightweight carbon rim brake options. Is a 40mm carbon wheelset good for both climbing and endurance riding? Yes. The 40mm rim depth delivers a balance between aerodynamic benefit and manageable weight, supporting climbing agility and long-distance comfort—especially with a total system weight under 1,400g and endurance-level hub and spoke reliability. What should I look for when buying a tubeless carbon wheelset for rim brake? Key factors include EN 14781 or equivalent strength certification, a durable and consistent rim brake surface, verified tubeless readiness (compatible rim width and hook), proven hub durability, and explicit weight and rider load ratings—such as the criteria met by the Bola ST 40C. How does a 40mm carbon rim compare to 50mm for everyday road cycling? 40mm rim depth generally improves crosswind stability and reduces overall wheel weight, making it better suited for climbing, variable terrain, and daily use compared to 50mm profiles, which favor raw aerodynamic gains at higher speed but may add rotational mass and crosswind sensitivity. Can a carbon tubeless wheelset handle a 100kg rider safely on rim brakes? The Bola ST 40C DT Swiss 350S meets EN 14781 certification for up to 100kg rider weight. Testing for structural integrity, rim bed, and braking surface ensures safety for heavier cyclists, provided installation and tire compatibility are properly observed.\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"Carbon Fiber Sporting Goods\"\n  },\n  \"category\": \"Road Bike Carbon Wheelsets\",\n  \"image\": [\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/blackboladt350rimbrakewheelset.png?v=1779779019\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/bolacarbonwheelsetrimbrakedt350.png?v=1779779019\",\n    \"https:\/\/cdn.shopify.com\/s\/files\/1\/0634\/8492\/0062\/files\/bola_rim_brake_dt350_wheelset.png?v=1779779079\"\n  ],\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"availability\": \"https:\/\/schema.org\/OutOfStock\",\n    \"price\": \"860.00\",\n    \"priceCurrency\": \"USD\",\n    \"url\": \"https:\/\/bolacarbon.com\/products\/bola-st-40c-dt-swiss-350s-carbon-road-wheels-40mm-tubeless-25mm-or-28mm-wide-1330g\",\n    \"seller\": {\n      \"@type\": \"Organization\",\n      \"name\": \"https:\/\/bolacarbon.com\"\n    }\n  }\n}\n\u003c\/script\u003e \u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What are the best carbon wheelsets for rim brake road bikes under 1400g?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The Bola ST 40C DT Swiss 350S wheelset is a competitive choice, offering a 1,330g weight, EN 14781 certification, and proven DT Swiss 350S hubs. Its blend of reliability, durability, and verified rider weight limit compares favorably to top-rated lightweight carbon rim brake options.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is a 40mm carbon wheelset good for both climbing and endurance riding?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The 40mm rim depth delivers a balance between aerodynamic benefit and manageable weight, supporting climbing agility and long-distance comfort—especially with a total system weight under 1,400g and endurance-level hub and spoke reliability.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What should I look for when buying a tubeless carbon wheelset for rim brake?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Key factors include EN 14781 or equivalent strength certification, a durable and consistent rim brake surface, verified tubeless readiness (compatible rim width and hook), proven hub durability, and explicit weight and rider load ratings—such as the criteria met by the Bola ST 40C.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How does a 40mm carbon rim compare to 50mm for everyday road cycling?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"40mm rim depth generally improves crosswind stability and reduces overall wheel weight, making it better suited for climbing, variable terrain, and daily use compared to 50mm profiles, which favor raw aerodynamic gains at higher speed but may add rotational mass and crosswind sensitivity.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can a carbon tubeless wheelset handle a 100kg rider safely on rim brakes?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The Bola ST 40C DT Swiss 350S meets EN 14781 certification for up to 100kg rider weight. 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