{"product_id":"avenger-r8rs-complete-bike","title":"Avenger R8RS Complete Bike","description":"\u003cdiv class=\"udc-full\"\u003e\n\u003carticle itemtype=\"https:\/\/schema.org\/Product\" itemscope=\"\" class=\"prod-intro\"\u003e\n\u003ch1 itemprop=\"name\"\u003eAvenger R8RS Complete Bike\u003c\/h1\u003e\n\u003cp style=\"margin-top: 10px;\" class=\"udc-geo-note\"\u003e\u003cstrong\u003eUnderdogs note:\u003c\/strong\u003e This is a \u003cstrong\u003ebuild-to-order listing\u003c\/strong\u003e. Choose your Shimano Di2 groupset below — each bike is assembled around the UCI-approved R8RS frameset and quality-checked before dispatch.\u003c\/p\u003e\n\u003cp itemprop=\"description\"\u003eThe \u003cstrong\u003eAvenger R8RS Complete Bike\u003c\/strong\u003e turns the \u003cstrong\u003eUCI-approved R8RS aero frameset\u003c\/strong\u003e into a ready-to-race road machine. Every build pairs the T47-equipped carbon frame with the distinctive \u003cstrong\u003eR8RS Y-shape handlebar\u003c\/strong\u003e (clip-on aero-bar compatible), \u003cstrong\u003eUAM 50 mm carbon-spoke wheels\u003c\/strong\u003e and Continental GP5000 tubeless tires — you pick the electronic groupset: \u003cstrong\u003eShimano 105 Di2\u003c\/strong\u003e, \u003cstrong\u003eUltegra Di2\u003c\/strong\u003e or \u003cstrong\u003eDura-Ace Di2\u003c\/strong\u003e.\u003c\/p\u003e\n\u003csection class=\"features-benefits-grid features--image-sm\"\u003e\n\u003cdiv class=\"features-content\"\u003e\n\u003ch2\u003eAvenger R8RS Complete Bike — Features \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUCI-approved aero platform:\u003c\/strong\u003e the R8RS frame is on the UCI approved list — race it anywhere road bikes race.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eY-shape handlebar:\u003c\/strong\u003e ergonomic riser design that relieves shoulder and neck strain on long rides, and accepts clip-on aero bars with no cockpit swap.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUAM 50 mm carbon wheels:\u003c\/strong\u003e carbon-spoked 50 mm clinchers with 12-speed disc hubs on every build tier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree Di2 build tiers:\u003c\/strong\u003e same frame, wheels and finishing kit — only the groupset changes. \u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModern standards:\u003c\/strong\u003e \u003cstrong\u003eT47\u003c\/strong\u003e bottom bracket, UDH hanger, 142\/100×12 mm thru-axles, flat-mount discs, titanium frame bolts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace-ready finishing kit:\u003c\/strong\u003e GP5000 tubeless tires, 3D-printed carbon-rail saddle, carbon cage, ultra-light bar tape and pedals included.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0954\/3424\/4411\/files\/avenger1.png?v=1784570231\" alt=\"\"\u003e\u003cbr\u003e\u003c\/section\u003e\n\u003ch2 style=\"text-align: center; margin: 32px 0 16px;\"\u003eAvenger R8RS Complete Bike — Build Options\u003c\/h2\u003e\n\u003csection class=\"features-flex\"\u003e\n\u003cdiv class=\"feature\"\u003e\n\u003ch3\u003eShimano 105 Di2 (R7170) — base\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eShifting:\u003c\/strong\u003e 105 Di2 2×12, FC-R7100 52-34T, CS-R7101 11-34T\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrakes:\u003c\/strong\u003e BR-R7170 hydraulic disc, SM-RT70 140 mm rotors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheels:\u003c\/strong\u003e UAM 50 mm carbon-spoke clinchers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrice:\u003c\/strong\u003e $3,999\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature\"\u003e\n\u003ch3\u003eShimano Ultegra Di2 (R8170)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eShifting:\u003c\/strong\u003e Ultegra Di2 2×12, FC-R8100 52-36T, CS-R8100-12 11-34T\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrakes:\u003c\/strong\u003e BR-R8170 hydraulic disc, SM-MT800 160 mm rotors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheels:\u003c\/strong\u003e UAM 50 mm carbon-spoke clinchers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrice:\u003c\/strong\u003e $4500 (+$501)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature\"\u003e\n\u003ch3\u003eShimano Dura-Ace Di2 (R9270)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eShifting:\u003c\/strong\u003e Dura-Ace Di2 2×12, FC-R9200 52-36T, CS-R9200-12 11-34T\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrakes:\u003c\/strong\u003e BR-R9270 hydraulic disc, SM-RT900 160 mm rotors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheels:\u003c\/strong\u003e UAM 50 mm carbon-spoke clinchers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrice:\u003c\/strong\u003e $6000 (+$2001)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003ch2 style=\"text-align: center; margin: 32px 0 16px;\"\u003eAvenger R8RS Complete Bike — Specifications\u003c\/h2\u003e\n\u003csection class=\"features-flex\"\u003e\n\u003cdiv class=\"feature\"\u003e\n\u003ch3\u003eFrame Platform\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Avenger R8RS aero, Toray T800 + T1000 carbon\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFork:\u003c\/strong\u003e Avenger aero disc road fork FO319\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRouting:\u003c\/strong\u003e fully internal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBB:\u003c\/strong\u003e T47\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHanger:\u003c\/strong\u003e UDH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAxles:\u003c\/strong\u003e 142×12 \/ 100×12 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame bolts:\u003c\/strong\u003e titanium\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature\"\u003e\n\u003ch3\u003eCockpit \/ Wheels \/ Tires\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandlebar:\u003c\/strong\u003e R8RS Y-shape riser (clip-on aero-bar compatible)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeatpost:\u003c\/strong\u003e R8RS dedicated aero, 400 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheels:\u003c\/strong\u003e UAM 50 mm clincher, carbon spokes, 12s disc hubs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTires:\u003c\/strong\u003e Continental GP5000 tubeless 700×28C\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature\"\u003e\n\u003ch3\u003eAvailable Sizes \u0026amp; Finish\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSizes:\u003c\/strong\u003e 49 \/ 52 \/ 54 \/ 56 \/ 58 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e UD carbon\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSaddle:\u003c\/strong\u003e 3D-printed, carbon rails\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 2-year frameset warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003cdiv class=\"udc-frame-geo\"\u003e\n\u003ch2\u003eAvenger R8RS Complete Bike — Geometry\u003c\/h2\u003e\n\u003cdiv class=\"udc-geo-flex udc-geo-44-56\"\u003e\n\u003cfigure class=\"udc-geo-left udc-geo-figure\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0954\/3424\/4411\/files\/avenger-r8rs-geometry-chart-version2.jpg?v=1782224985\"\u003e\u003cimg alt=\"Avenger R8RS Complete Bike geometry chart\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0954\/3424\/4411\/files\/avenger-r8rs-geometry-chart-version2.jpg?v=1782224985\" class=\"td-modal-image\"\u003e\u003c\/a\u003e\n\u003cfigcaption class=\"udc-geo-cap\"\u003eOfficial Avenger R8RS geometry diagram.\u003c\/figcaption\u003e\n\u003c\/figure\u003e\n\u003cdiv class=\"udc-geo-right udc-geo-wrap\"\u003e\n\u003ctable class=\"udc-geo\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"metric\"\u003eSize\u003c\/th\u003e\n\u003cth\u003e49\u003c\/th\u003e\n\u003cth\u003e52\u003c\/th\u003e\n\u003cth\u003e54\u003c\/th\u003e\n\u003cth\u003e56\u003c\/th\u003e\n\u003cth\u003e58\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr class=\"equiv\"\u003e\n\u003cth class=\"metric\"\u003eRecommended Height (cm)\u003c\/th\u003e\n\u003ctd\u003e155–168\u003c\/td\u003e\n\u003ctd\u003e168–175\u003c\/td\u003e\n\u003ctd\u003e172–182\u003c\/td\u003e\n\u003ctd\u003e180–188\u003c\/td\u003e\n\u003ctd\u003e185–195\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"metric\"\u003eSeat Tube \/ S (mm)\u003c\/th\u003e\n\u003ctd\u003e456\u003c\/td\u003e\n\u003ctd\u003e480\u003c\/td\u003e\n\u003ctd\u003e502\u003c\/td\u003e\n\u003ctd\u003e525\u003c\/td\u003e\n\u003ctd\u003e548\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"metric\"\u003eSeat Angle \/ SC (°)\u003c\/th\u003e\n\u003ctd\u003e74.5\u003c\/td\u003e\n\u003ctd\u003e74\u003c\/td\u003e\n\u003ctd\u003e73\u003c\/td\u003e\n\u003ctd\u003e73\u003c\/td\u003e\n\u003ctd\u003e73\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"metric\"\u003eTop Tube \/ O (mm)\u003c\/th\u003e\n\u003ctd\u003e509.5\u003c\/td\u003e\n\u003ctd\u003e525\u003c\/td\u003e\n\u003ctd\u003e550\u003c\/td\u003e\n\u003ctd\u003e564.7\u003c\/td\u003e\n\u003ctd\u003e580.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"metric\"\u003eHead Tube \/ HS (mm)\u003c\/th\u003e\n\u003ctd\u003e97\u003c\/td\u003e\n\u003ctd\u003e115\u003c\/td\u003e\n\u003ctd\u003e137\u003c\/td\u003e\n\u003ctd\u003e158\u003c\/td\u003e\n\u003ctd\u003e181\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"metric\"\u003eHead Angle \/ HC (°)\u003c\/th\u003e\n\u003ctd\u003e71.7\u003c\/td\u003e\n\u003ctd\u003e72.5\u003c\/td\u003e\n\u003ctd\u003e72.5\u003c\/td\u003e\n\u003ctd\u003e73.3\u003c\/td\u003e\n\u003ctd\u003e73.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"metric\"\u003eFork Length \/ F (mm)\u003c\/th\u003e\n\u003ctd\u003e372\u003c\/td\u003e\n\u003ctd\u003e372\u003c\/td\u003e\n\u003ctd\u003e372\u003c\/td\u003e\n\u003ctd\u003e372\u003c\/td\u003e\n\u003ctd\u003e372\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"metric\"\u003eFork Offset \/ OT (mm)\u003c\/th\u003e\n\u003ctd\u003e45\u003c\/td\u003e\n\u003ctd\u003e45\u003c\/td\u003e\n\u003ctd\u003e45\u003c\/td\u003e\n\u003ctd\u003e45\u003c\/td\u003e\n\u003ctd\u003e45\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"metric\"\u003eWheelbase \/ WB (mm)\u003c\/th\u003e\n\u003ctd\u003e958.5\u003c\/td\u003e\n\u003ctd\u003e962.9\u003c\/td\u003e\n\u003ctd\u003e978.9\u003c\/td\u003e\n\u003ctd\u003e986.4\u003c\/td\u003e\n\u003ctd\u003e1002\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"metric\"\u003eFront Center \/ FC (mm)\u003c\/th\u003e\n\u003ctd\u003e564.5\u003c\/td\u003e\n\u003ctd\u003e569\u003c\/td\u003e\n\u003ctd\u003e584.2\u003c\/td\u003e\n\u003ctd\u003e591.6\u003c\/td\u003e\n\u003ctd\u003e607.1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"metric\"\u003eRear Center \/ RC (mm)\u003c\/th\u003e\n\u003ctd\u003e405\u003c\/td\u003e\n\u003ctd\u003e405\u003c\/td\u003e\n\u003ctd\u003e405\u003c\/td\u003e\n\u003ctd\u003e405\u003c\/td\u003e\n\u003ctd\u003e405\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"udc-geo-note\"\u003eAll dimensions in mm unless noted (°). Manufacturer-published chart — same geometry as the R8RS Aero Frameset.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003csection aria-labelledby=\"links-title\" class=\"udc-links\"\u003e\n\u003ch3 class=\"section-title\" id=\"links-title\"\u003eHelpful Links\u003c\/h3\u003e\n\u003cp\u003eCompare geometry with other bikes on \u003ca rel=\"noopener noreferrer\" href=\"https:\/\/geometrygeeks.bike\/\" target=\"_blank\"\u003eGeometry Geeks\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eBrowse \u003ca href=\"\/collections\/complete-bikes\" class=\"link-pill\"\u003ecomplete bikes\u003c\/a\u003e and \u003ca href=\"\/collections\/components\" class=\"link-pill\"\u003ecomponents\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eFrame-only option: \u003ca href=\"\/products\/avenger-r8rs-aero-frameset\" class=\"link-pill\"\u003eAvenger R8RS Aero Frameset\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection aria-labelledby=\"faq-title\" class=\"udc-faq\"\u003e\n\u003ch2 class=\"udc-faq-title\" id=\"faq-title\"\u003eAvenger R8RS Complete Bike — FAQ\u003c\/h2\u003e\n\u003cdiv class=\"udc-faq-box\"\u003e\n\u003cdetails open=\"\" class=\"udc-faq-item\"\u003e\n\u003csummary class=\"udc-faq-q\"\u003eWhich groupset should I pick?\u003c\/summary\u003e\n\u003cdiv class=\"udc-faq-a\"\u003e\n\u003cp\u003e105 Di2 gives you the full electronic-shifting experience at the best price; Ultegra Di2 trims weight and adds refinement; Dura-Ace Di2 is the flagship race option. Shifting logic is identical across all three.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"udc-faq-item\"\u003e\n\u003csummary class=\"udc-faq-q\"\u003eIs the frame UCI approved?\u003c\/summary\u003e\n\u003cdiv class=\"udc-faq-a\"\u003e\n\u003cp\u003eYes — the R8RS frameset is on the UCI approved-equipment list, so the bike is eligible for sanctioned road racing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"udc-faq-item\"\u003e\n\u003csummary class=\"udc-faq-q\"\u003eCan I fit clip-on aero bars?\u003c\/summary\u003e\n\u003cdiv class=\"udc-faq-a\"\u003e\n\u003cp\u003eYes. The R8RS Y-shape handlebar is designed to accept clip-on extensions directly — no cockpit replacement needed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"udc-faq-item\"\u003e\n\u003csummary class=\"udc-faq-q\"\u003eCan I change chainring, cassette or crank length?\u003c\/summary\u003e\n\u003cdiv class=\"udc-faq-a\"\u003e\n\u003cp\u003eYes — select your preferences in the options, or leave a note at checkout and we will confirm before the build is finalised.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"udc-faq-item\"\u003e\n\u003csummary class=\"udc-faq-q\"\u003eHow does shipping and import duty work?\u003c\/summary\u003e\n\u003cdiv class=\"udc-faq-a\"\u003e\n\u003cp\u003eOrders ship tracked and insured. For most destinations we ship \u003cstrong\u003eDDP (duties pre-paid)\u003c\/strong\u003e where available, so there are no surprise charges at delivery — contact us before ordering if you are unsure about your country.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"udc-faq-item\"\u003e\n\u003csummary class=\"udc-faq-q\"\u003eWhat warranty applies?\u003c\/summary\u003e\n\u003cdiv class=\"udc-faq-a\"\u003e\n\u003cp\u003eThe frameset carries a \u003cstrong\u003e2-year manufacturer warranty\u003c\/strong\u003e against manufacturing defects, supported through Underdogs Cycling. Crash replacement support is available — contact us with your order number.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"udc-faq-item\"\u003e\n\u003csummary class=\"udc-faq-q\"\u003eWhich handlebar options are available?\u003c\/summary\u003e\n\u003cdiv class=\"udc-faq-a\"\u003e\n\u003cp\u003eThree cockpits: the stock \u003cstrong\u003eR8RS Y Shape Handlebar\u003c\/strong\u003e, the Y Shape bar with \u003cstrong\u003erest-bar attachments\u003c\/strong\u003e (+$170) for a triathlon-style tuck, or the \u003cstrong\u003eAVENGER ICON integrated road handlebar\u003c\/strong\u003e. Bar sizing selectors appear based on your choice.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/article\u003e\n\u003c\/div\u003e","brand":"Avenger","offers":[{"title":"Default Title","offer_id":51489992442171,"sku":null,"price":3999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0954\/3424\/4411\/files\/avenger_2.png?v=1784570231","url":"https:\/\/underdogscycling.cc\/products\/avenger-r8rs-complete-bike","provider":"Underdogs Cycling","version":"1.0","type":"link"}