{"product_id":"look-765-optimum-105-shimano-rs171-proteam-black-glossy","title":"LOOK 765 Optimum Shimano 105 \/ RS171","description":"\u003cstyle\u003e\n.br765{--ink:#111718;--char:#171d1d;--paper:#f6f7f4;--warm:#edece7;--green:#0f502c;--lime:#a8b89f;--line:rgba(16,27,25,.15);font-family:inherit;color:var(--ink);background:#fff;border-radius:20px;overflow:hidden;line-height:1.64;font-size:16px}\n.br765 *{box-sizing:border-box}\n.br765 h2,.br765 h3,.br765 h4{font-family:inherit;letter-spacing:-.035em;line-height:1.09;margin:0 0 18px;color:inherit;text-transform:none}\n.br765 h2{font-size:clamp(2.15rem,4.7vw,4.9rem);font-weight:800}\n.br765 h3{font-size:clamp(1.55rem,3.3vw,2.9rem);font-weight:760}\n.br765 h4{font-size:1.13rem;font-weight:740}\n.br765 p{margin:0 0 17px;max-width:74ch;color:inherit}\n.br765 strong{font-weight:740}\n.br765 .br765-tag{display:inline-block;border-radius:100px;border:1px solid rgba(255,255,255,.29);padding:7px 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22px;border-radius:13px;background:#fff;border:1px solid #dbe3da}\n.br765 .br765-faq article h4{color:#15271b;font-size:16px;margin:0 0 8px}\n.br765 .br765-faq article p{font-size:15px;color:#3d4c3e;margin:0}\n.br765 .br765-note{font-size:13px;color:#536155;margin-top:16px}\n.br765 .br765-link{color:var(--green);text-decoration:underline;text-underline-offset:3px}\n.br765 .br765-section--dark .br765-link{color:#bfdfc4}\n@media(max-width:860px){.br765 .br765-herogrid,.br765 .br765-grid,.br765 .br765-photo-row{grid-template-columns:1fr}.br765 .br765-hero h2{max-width:none}.br765 .br765-photo img{aspect-ratio:3\/2}.br765 .br765-hero-photo img{min-height:0}}\n@media(max-width:520px){.br765{border-radius:12px}.br765 .br765-section,.br765 .br765-hero{padding:25px 20px}.br765 .br765-pill{flex:1 1 130px}}\n\u003c\/style\u003e\n\u003csection class=\"br765\" aria-label=\"LOOK 765 Optimum Shimano 105 product story\"\u003e\n  \u003cdiv class=\"br765-stripe\" aria-hidden=\"true\"\u003e\u003c\/div\u003e\n  \u003csection class=\"br765-hero\"\u003e\n    \u003cdiv class=\"br765-herogrid\"\u003e\n      \u003cdiv\u003e\n        \u003cspan class=\"br765-tag\"\u003eLOOK 765 OPTIMUM \/ ENDURANCE ROAD\u003c\/span\u003e\n        \u003ch2\u003eGo farther. \u003cspan\u003eFeel better.\u003c\/span\u003e\n\u003c\/h2\u003e\n        \u003cp class=\"br765-lead\"\u003eA carbon road bike made for the miles you want to keep riding. The LOOK 765 Optimum Shimano 105 \/ RS171 balances efficient road performance with a more accommodating position, predictable handling and the versatility of up to 34 mm tire clearance.\u003c\/p\u003e\n        \u003cp\u003eThe Proteam Black Glossy finish gives this everyday endurance bike the unmistakable LOOK identity. Underneath: a purpose-built carbon chassis, mechanical Shimano 105 12-speed shifting, Shimano RS171 wheels and a LOOK LS1 carbon seatpost.\u003c\/p\u003e\n        \u003cdiv class=\"br765-pillrow\"\u003e\n          \u003cdiv class=\"br765-pill\"\u003e\n\u003cb\u003e2x12\u003c\/b\u003e Shimano 105 mechanical\u003c\/div\u003e\n          \u003cdiv class=\"br765-pill\"\u003e\n\u003cb\u003e34 mm\u003c\/b\u003e Maximum tire clearance\u003c\/div\u003e\n          \u003cdiv class=\"br765-pill\"\u003e\n\u003cb\u003e11–34T\u003c\/b\u003e Shimano 105 cassette\u003c\/div\u003e\n          \u003cdiv class=\"br765-pill\"\u003e\n\u003cb\u003eXS–XL\u003c\/b\u003e Five frame sizes\u003c\/div\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cfigure class=\"br765-hero-photo\"\u003e\n        \u003cimg src=\"https:\/\/www.lookcycle.com\/media\/cache\/product_original\/products-bikes-2026\/765-Optimum\/Proteam-Black-105\/765-Optimum-105-Proteam-Black.jpg\" alt=\"LOOK 765 Optimum Shimano 105 RS171 Proteam Black Glossy official product image\" loading=\"eager\"\u003e\n        \u003cfigcaption\u003eLOOK 765 Optimum \/ Shimano 105 \/ RS171 · Proteam Black Glossy\u003c\/figcaption\u003e\n      \u003c\/figure\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"br765-section br765-section--paper\"\u003e\n    \u003cspan class=\"br765-eyebrow\"\u003e01 \/ The ride\u003c\/span\u003e\n    \u003ch3\u003eEndurance without the dullness.\u003c\/h3\u003e\n    \u003cp class=\"br765-sublead\"\u003eThe 765 Optimum is made for riders who want a responsive carbon road bike but do not want every ride to feel like a race-day position. LOOK pairs a shorter reach and taller head tube with a carbon layup engineered to balance stiffness and compliance.\u003c\/p\u003e\n    \u003cdiv class=\"br765-grid\"\u003e\n      \u003cdiv class=\"br765-card\"\u003e\n\u003ch4\u003eA position you can hold\u003c\/h4\u003e\n\u003cp\u003eThe endurance geometry offers a less extreme posture for century rides, long climbs, training blocks and busy roads.\u003c\/p\u003e\n\u003c\/div\u003e\n      \u003cdiv class=\"br765-card\"\u003e\n\u003ch4\u003eConfidence on imperfect pavement\u003c\/h4\u003e\n\u003cp\u003eUp to 34 mm tire clearance creates room for wider road tires, improving setup flexibility for rougher pavement.\u003c\/p\u003e\n\u003c\/div\u003e\n      \u003cdiv class=\"br765-card\"\u003e\n\u003ch4\u003eReal road performance\u003c\/h4\u003e\n\u003cp\u003eA carbon frameset, 12-speed 105 gearing and hydraulic discs keep this firmly in the performance-road category.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"br765-quote\"\u003e\n\u003cstrong\u003eThe point is not to ride slower.\u003c\/strong\u003e It is to have a bike that still feels good well into the final hour.\u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"br765-section br765-section--dark\"\u003e\n    \u003cspan class=\"br765-eyebrow\"\u003e02 \/ LOOK carbon engineering\u003c\/span\u003e\n    \u003ch3\u003eComfort designed into the chassis.\u003c\/h3\u003e\n    \u003cp\u003eRather than treating comfort as an accessory, LOOK developed the 765 Optimum around an endurance-specific blend of carbon fibers, frame shaping and geometry. The aim is a planted, precise road bike that remains comfortable when the surface deteriorates or the ride stretches past the usual distance.\u003c\/p\u003e\n    \u003cp\u003eThe 765 Optimum platform is also described by LOOK with its 3D Wave rear-stay comfort concept. This is an endurance-specific design intended to help absorb road vibration; it is not a suspension system.\u003c\/p\u003e\n    \u003cdiv class=\"br765-photo-row\"\u003e\n      \u003cfigure class=\"br765-photo\"\u003e\u003cimg src=\"https:\/\/www.lookcycle.com\/media\/cache\/product_original\/products-bikes-2026\/765-Optimum\/Proteam-Black-105\/765-Optimum-Proteam-Black-105.jpg\" alt=\"LOOK 765 Optimum Proteam Black Glossy frame and front-end detail\" loading=\"lazy\"\u003e\u003cfigcaption\u003eEndurance geometry and carbon construction aimed at long road miles.\u003c\/figcaption\u003e\u003c\/figure\u003e\n      \u003cfigure class=\"br765-photo\"\u003e\u003cimg src=\"https:\/\/www.lookcycle.com\/media\/cache\/product_original\/products-bikes-2026\/765-Optimum\/Proteam-Black-105\/765-Optimum-Proteam-Black-105-1.jpg\" alt=\"LOOK 765 Optimum Proteam Black Glossy cockpit detail\" loading=\"lazy\"\u003e\u003cfigcaption\u003eA clean alloy cockpit and carbon seatpost make a practical, performance-oriented package.\u003c\/figcaption\u003e\u003c\/figure\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"br765-section\"\u003e\n    \u003cspan class=\"br765-eyebrow\"\u003e03 \/ The specification\u003c\/span\u003e\n    \u003ch3\u003eMechanical Shimano 105 makes sense here.\u003c\/h3\u003e\n    \u003cp\u003eShimano 105 mechanical 2x12 gives riders crisp indexed shifting and familiar serviceability without adding the cost or charging routine of electronic shifting. With a listed 11–34T cassette and dealer-reported compact 50\/34 chainrings, the setup is well suited to varied terrain, training and long climbs.\u003c\/p\u003e\n    \u003cp\u003eThe Shimano RS171 wheels give this build a dependable alloy starting point. For riders planning future upgrades, changing wheels and tires is a straightforward way to tune the ride without replacing the underlying endurance chassis.\u003c\/p\u003e\n    \u003cdiv class=\"br765-grid\"\u003e\n      \u003cdiv class=\"br765-card\"\u003e\n\u003ch4\u003eShimano 105 2x12\u003c\/h4\u003e\n\u003cp\u003eMechanical shifting and the close control of a modern 12-speed double road drivetrain.\u003c\/p\u003e\n\u003c\/div\u003e\n      \u003cdiv class=\"br765-card\"\u003e\n\u003ch4\u003eShimano RS171\u003c\/h4\u003e\n\u003cp\u003eEveryday road wheelset, leaving upgrade flexibility for later carbon-wheel ambitions.\u003c\/p\u003e\n\u003c\/div\u003e\n      \u003cdiv class=\"br765-card\"\u003e\n\u003ch4\u003eLOOK LS1 carbon seatpost\u003c\/h4\u003e\n\u003cp\u003eA useful premium touch on a bike designed around maintaining comfort over distance.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"br765-section br765-section--warm\"\u003e\n    \u003cspan class=\"br765-eyebrow\"\u003e04 \/ Which LOOK should you buy?\u003c\/span\u003e\n    \u003ch3\u003e765 Optimum 105 vs 105 Di2 vs 795 Blade RS.\u003c\/h3\u003e\n    \u003cp\u003eThere is no universal best road bike. The useful comparison is what each platform asks of the rider and which details matter over a full season. For riders comparing the mechanical 765 Optimum against electronic endurance builds or the aerodynamic Blade RS family, the differences are straightforward.\u003c\/p\u003e\n    \u003cdiv class=\"br765-tablewrap\"\u003e\u003ctable aria-label=\"LOOK 765 Optimum 105 versus 105 Di2 and 795 Blade RS\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003eDecision point\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e765 Optimum 105 (this bike)\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e765 Optimum 105 Di2\u003c\/th\u003e\n\u003cth scope=\"col\"\u003e795 Blade RS\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary purpose\u003c\/td\u003e\n\u003ctd\u003eEveryday speed, long-distance comfort, endurance events\u003c\/td\u003e\n\u003ctd\u003eThe same endurance-road platform with electronic shifting\u003c\/td\u003e\n\u003ctd\u003ePurpose-built aerodynamic road racing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRiding position\u003c\/td\u003e\n\u003ctd\u003eShorter reach and taller front end, tuned for longer time in the saddle\u003c\/td\u003e\n\u003ctd\u003eSame underlying endurance geometry\u003c\/td\u003e\n\u003ctd\u003eLower, more aggressive race-oriented fit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShifting\u003c\/td\u003e\n\u003ctd\u003eShimano 105 mechanical 2x12\u003c\/td\u003e\n\u003ctd\u003eShimano 105 Di2 electronic 2x12\u003c\/td\u003e\n\u003ctd\u003eRace-build-dependent: SRAM \/ Shimano \/ Campagnolo electronic groups\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard wheels\u003c\/td\u003e\n\u003ctd\u003eShimano RS171 alloy\u003c\/td\u003e\n\u003ctd\u003eShimano RS171 alloy in the referenced LOOK trim\u003c\/td\u003e\n\u003ctd\u003eCarbon race wheels on premium builds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTire accommodation\u003c\/td\u003e\n\u003ctd\u003eUp to 34 mm\u003c\/td\u003e\n\u003ctd\u003eUp to 34 mm on the 765 platform\u003c\/td\u003e\n\u003ctd\u003eRoad-race tire clearance depends on exact Blade RS generation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest choice if\u003c\/td\u003e\n\u003ctd\u003eYou want serviceable, reliable mechanical shifting and endurance comfort\u003c\/td\u003e\n\u003ctd\u003eYou value push-button electronic shifting over the simplest configuration\u003c\/td\u003e\n\u003ctd\u003eAerodynamics and high-speed racing outweigh endurance comfort\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n    \u003cdiv class=\"br765-quote\"\u003e\n\u003cstrong\u003eOur recommendation:\u003c\/strong\u003e choose this mechanical-105 765 Optimum when ride position, dependable serviceability and consistent road performance matter more than an electronic drivetrain or an aero-race cockpit.\u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"br765-section\"\u003e\n    \u003cspan class=\"br765-eyebrow\"\u003e05 \/ Who it is for\u003c\/span\u003e\n    \u003ch3\u003eOne carbon road bike. More reasons to ride.\u003c\/h3\u003e\n    \u003cdiv class=\"br765-grid\"\u003e\n      \u003cdiv class=\"br765-card\"\u003e\n\u003ch4\u003eLong-distance road riders\u003c\/h4\u003e\n\u003cp\u003eAll-day training, fondos, centuries and back-to-back road rides, with a less aggressive position than a race-focused Blade RS.\u003c\/p\u003e\n\u003c\/div\u003e\n      \u003cdiv class=\"br765-card\"\u003e\n\u003ch4\u003eRiders moving into carbon\u003c\/h4\u003e\n\u003cp\u003eA substantial endurance-road frame with modern Shimano 105, hydraulic disc braking and upgrade potential.\u003c\/p\u003e\n\u003c\/div\u003e\n      \u003cdiv class=\"br765-card\"\u003e\n\u003ch4\u003eVersatile pavement riders\u003c\/h4\u003e\n\u003cp\u003eFrom smooth roads to imperfect secondary roads, the 34 mm maximum tire clearance makes practical tire choices possible.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cfigure class=\"br765-photo-single\"\u003e\u003cimg src=\"https:\/\/www.lookcycle.com\/media\/cache\/product_original\/products-bikes-2026\/765-Optimum\/Proteam-Black-105\/765-Optimum-105-Proteam-Black-4.jpg\" alt=\"LOOK 765 Optimum Shimano 105 RS171 alternate official manufacturer gallery image\" loading=\"lazy\"\u003e\u003cfigcaption\u003eLOOK 765 Optimum in its Proteam Black Glossy finish.\u003c\/figcaption\u003e\u003c\/figure\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"br765-section br765-section--paper\"\u003e\n    \u003cspan class=\"br765-eyebrow\"\u003e06 \/ Components\u003c\/span\u003e\n    \u003ch3\u003eFull build specifications.\u003c\/h3\u003e\n    \u003cp\u003eThe table below follows LOOK's current 765 Optimum 105 \/ RS171 product listing. Where LOOK has not specified an exact OEM part, that omission is flagged instead of filling it with a guessed component. A separate dealer reference supplies the compact chainring and hydraulic-disc information.\u003c\/p\u003e\n    \u003cdiv class=\"br765-tablewrap\"\u003e\u003ctable aria-label=\"LOOK 765 Optimum Shimano 105 components and specifications\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eLOOK 765 Optimum 105 \/ Shimano RS-171\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCategory\u003c\/td\u003e\n\u003ctd\u003eCarbon endurance road bike\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eProteam Black Glossy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrame\u003c\/td\u003e\n\u003ctd\u003eLOOK 765 Optimum endurance carbon frame, multiple-fiber layup\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFork\u003c\/td\u003e\n\u003ctd\u003eLOOK 765 Optimum carbon fork\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrivetrain\u003c\/td\u003e\n\u003ctd\u003eShimano 105 mechanical, 2x12-speed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShifters\u003c\/td\u003e\n\u003ctd\u003eShimano 105 mechanical 12-speed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFront \/ rear derailleurs\u003c\/td\u003e\n\u003ctd\u003eShimano 105 12-speed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrankset\u003c\/td\u003e\n\u003ctd\u003eShimano 105, 50\/34T (dealer-listed; confirm final OE specification)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCassette\u003c\/td\u003e\n\u003ctd\u003eShimano CS-R7101, 11-34T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChain\u003c\/td\u003e\n\u003ctd\u003e12-speed chain (exact OEM model not confirmed on current LOOK listing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrakes\u003c\/td\u003e\n\u003ctd\u003eShimano 105 hydraulic disc (dealer-listed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBottom bracket\u003c\/td\u003e\n\u003ctd\u003eToken T47\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWheels\u003c\/td\u003e\n\u003ctd\u003eShimano WH-RS171\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTires\u003c\/td\u003e\n\u003ctd\u003eManufacturer product page does not identify exact tire model; maximum frame clearance 34 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHandlebar\u003c\/td\u003e\n\u003ctd\u003eLOOK LS3 Alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStem\u003c\/td\u003e\n\u003ctd\u003eLOOK LS3 Alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeatpost\u003c\/td\u003e\n\u003ctd\u003eLOOK LS1 Carbon Superlight, 27.2 mm x 350 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSaddle\u003c\/td\u003e\n\u003ctd\u003eLOOK by San Marco Short Fit Dynamic Open Fit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e7.9 kg claimed for size M on LOOK product page; not a weight for every size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSizes\u003c\/td\u003e\n\u003ctd\u003eXS, S, M, L, XL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eU.S. listed price\u003c\/td\u003e\n\u003ctd\u003e$3,600\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n    \u003cp class=\"br765-note\"\u003eManufacturer specifications and availability may change. Verify tire model, brake rotor sizes and any equipment substitutions with Brimstone Bicycles before purchase.\u003c\/p\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"br765-section\"\u003e\n    \u003cspan class=\"br765-eyebrow\"\u003e07 \/ Fit\u003c\/span\u003e\n    \u003ch3\u003eLOOK 765 Optimum geometry.\u003c\/h3\u003e\n    \u003cp\u003eThe endurance fit begins with stack and reach, then the full geometry refines your riding position. All linear dimensions below are in millimeters unless stated otherwise. Geometry comes from LOOK's official XS–XL chart.\u003c\/p\u003e\n    \u003cdiv class=\"br765-tablewrap\"\u003e\u003ctable aria-label=\"LOOK 765 Optimum geometry by size in millimeters\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003eMeasurement\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eXS\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eS\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eM\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eL\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eXL\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eStack (mm)\u003c\/td\u003e\n\u003ctd\u003e534\u003c\/td\u003e\n\u003ctd\u003e558\u003c\/td\u003e\n\u003ctd\u003e582\u003c\/td\u003e\n\u003ctd\u003e606\u003c\/td\u003e\n\u003ctd\u003e630\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReach (mm)\u003c\/td\u003e\n\u003ctd\u003e358\u003c\/td\u003e\n\u003ctd\u003e368\u003c\/td\u003e\n\u003ctd\u003e379\u003c\/td\u003e\n\u003ctd\u003e389\u003c\/td\u003e\n\u003ctd\u003e399\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead tube angle (degrees)\u003c\/td\u003e\n\u003ctd\u003e70.8\u003c\/td\u003e\n\u003ctd\u003e70.8\u003c\/td\u003e\n\u003ctd\u003e70.8\u003c\/td\u003e\n\u003ctd\u003e70.8\u003c\/td\u003e\n\u003ctd\u003e70.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeat tube angle (degrees)\u003c\/td\u003e\n\u003ctd\u003e74\u003c\/td\u003e\n\u003ctd\u003e74\u003c\/td\u003e\n\u003ctd\u003e74\u003c\/td\u003e\n\u003ctd\u003e74\u003c\/td\u003e\n\u003ctd\u003e74\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeat tube (mm)\u003c\/td\u003e\n\u003ctd\u003e470\u003c\/td\u003e\n\u003ctd\u003e490\u003c\/td\u003e\n\u003ctd\u003e510\u003c\/td\u003e\n\u003ctd\u003e535\u003c\/td\u003e\n\u003ctd\u003e560\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEffective top tube (mm)\u003c\/td\u003e\n\u003ctd\u003e511.8\u003c\/td\u003e\n\u003ctd\u003e528.7\u003c\/td\u003e\n\u003ctd\u003e545.5\u003c\/td\u003e\n\u003ctd\u003e562.4\u003c\/td\u003e\n\u003ctd\u003e579.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFront center (mm)\u003c\/td\u003e\n\u003ctd\u003e576\u003c\/td\u003e\n\u003ctd\u003e594\u003c\/td\u003e\n\u003ctd\u003e613\u003c\/td\u003e\n\u003ctd\u003e631\u003c\/td\u003e\n\u003ctd\u003e650\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTrail (mm)\u003c\/td\u003e\n\u003ctd\u003e67\u003c\/td\u003e\n\u003ctd\u003e67\u003c\/td\u003e\n\u003ctd\u003e67\u003c\/td\u003e\n\u003ctd\u003e67\u003c\/td\u003e\n\u003ctd\u003e67\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFork offset (mm)\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChainstays (mm)\u003c\/td\u003e\n\u003ctd\u003e415\u003c\/td\u003e\n\u003ctd\u003e415\u003c\/td\u003e\n\u003ctd\u003e415\u003c\/td\u003e\n\u003ctd\u003e415\u003c\/td\u003e\n\u003ctd\u003e415\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead tube length (mm)\u003c\/td\u003e\n\u003ctd\u003e117\u003c\/td\u003e\n\u003ctd\u003e142\u003c\/td\u003e\n\u003ctd\u003e170\u003c\/td\u003e\n\u003ctd\u003e195.3\u003c\/td\u003e\n\u003ctd\u003e223.4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFork length (mm)\u003c\/td\u003e\n\u003ctd\u003e385.5\u003c\/td\u003e\n\u003ctd\u003e385.5\u003c\/td\u003e\n\u003ctd\u003e385.5\u003c\/td\u003e\n\u003ctd\u003e385.5\u003c\/td\u003e\n\u003ctd\u003e385.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBB drop \/ HAV (mm)\u003c\/td\u003e\n\u003ctd\u003e76\u003c\/td\u003e\n\u003ctd\u003e76\u003c\/td\u003e\n\u003ctd\u003e73.5\u003c\/td\u003e\n\u003ctd\u003e73.5\u003c\/td\u003e\n\u003ctd\u003e71\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandover (mm)\u003c\/td\u003e\n\u003ctd\u003e742\u003c\/td\u003e\n\u003ctd\u003e766\u003c\/td\u003e\n\u003ctd\u003e790\u003c\/td\u003e\n\u003ctd\u003e814\u003c\/td\u003e\n\u003ctd\u003e838\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n    \u003cp class=\"br765-note\"\u003eA geometry table supports sizing, but does not replace an individualized bike fit. Contact Brimstone Bicycles to discuss fit, stem length and tire setup.\u003c\/p\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"br765-section br765-section--paper\"\u003e\n    \u003cspan class=\"br765-eyebrow\"\u003e08 \/ Questions riders ask\u003c\/span\u003e\n    \u003ch3\u003eFrequently asked questions.\u003c\/h3\u003e\n    \u003cdiv class=\"br765-faq\"\u003e\n\u003carticle\u003e\u003ch4\u003eIs the LOOK 765 Optimum a race bike or an endurance bike?\u003c\/h4\u003e\n\u003cp\u003eIt is a performance-focused endurance road bike. Its taller front end and shorter reach are designed for spending longer hours comfortably in a road riding position while retaining responsive handling.\u003c\/p\u003e\u003c\/article\u003e\u003carticle\u003e\u003ch4\u003eIs the Shimano 105 build mechanical or electronic?\u003c\/h4\u003e\n\u003cp\u003eThis specific LOOK 765 Optimum Shimano RS171 uses mechanical Shimano 105 12-speed shifting, not 105 Di2. LOOK sells separate electronic-shifting versions.\u003c\/p\u003e\u003c\/article\u003e\u003carticle\u003e\u003ch4\u003eCan the LOOK 765 Optimum accommodate 34 mm tires?\u003c\/h4\u003e\n\u003cp\u003eLOOK specifies frame clearance up to 34 mm. Actual installed tire clearance depends on the rim and tire combination; confirm clearance after installation.\u003c\/p\u003e\u003c\/article\u003e\u003carticle\u003e\u003ch4\u003eWhat is the difference between the 765 Optimum 105 and 105 Di2?\u003c\/h4\u003e\n\u003cp\u003eBoth are endurance-oriented 765 Optimum bikes. The primary distinction is the shifting system: mechanical Shimano 105 versus electronic Shimano 105 Di2. Confirm the exact wheels and included components on any individual build.\u003c\/p\u003e\u003c\/article\u003e\u003carticle\u003e\u003ch4\u003eHow does the LOOK 765 Optimum compare with the 795 Blade RS?\u003c\/h4\u003e\n\u003cp\u003eThe 765 Optimum prioritizes all-day comfort and a more accommodating position. The 795 Blade RS is the sharper aerodynamic race-bike option for riders prioritizing aggressive road-race performance.\u003c\/p\u003e\u003c\/article\u003e\u003carticle\u003e\u003ch4\u003eDoes the 765 Optimum use a carbon seatpost?\u003c\/h4\u003e\n\u003cp\u003eYes. LOOK lists the LS1 Carbon Superlight 27.2 mm seatpost on this Shimano 105 \/ RS171 configuration.\u003c\/p\u003e\u003c\/article\u003e\u003carticle\u003e\u003ch4\u003eWhich sizes are available?\u003c\/h4\u003e\n\u003cp\u003eXS, S, M, L and XL. The full manufacturer geometry table is included above. For fit help, contact Brimstone Bicycles before ordering.\u003c\/p\u003e\u003c\/article\u003e\u003carticle\u003e\u003ch4\u003eIs the 7.9 kg weight valid for every size?\u003c\/h4\u003e\n\u003cp\u003eNo. LOOK publishes 7.9 kg for size M. Complete-bike weight varies with frame size and can vary with final equipment.\u003c\/p\u003e\u003c\/article\u003e\n\u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"br765-section br765-section--dark\"\u003e\n    \u003cspan class=\"br765-eyebrow\"\u003eBrimstone Bicycles \/ Authorized LOOK dealer\u003c\/span\u003e\n    \u003ch3\u003eBuild the right road bike for the miles ahead.\u003c\/h3\u003e\n    \u003cp\u003eFor a rider who wants a carbon endurance road bike with reliable mechanical shifting and room to personalize fit and tires, the 765 Optimum Shimano 105 \/ RS171 is a considered choice. It brings the LOOK carbon-road experience into a package meant to be ridden often, not saved for perfect conditions.\u003c\/p\u003e\n    \u003cp\u003eQuestions about frame sizing, component availability or the best setup for your local roads? \u003ca class=\"br765-link\" href=\"\/pages\/contact\"\u003eContact Brimstone Bicycles\u003c\/a\u003e. We can help compare the 765 Optimum against LOOK's electronic endurance and Blade RS race models before you decide.\u003c\/p\u003e\n  \u003c\/section\u003e\n\u003c\/section\u003e","brand":"LOOK","offers":[{"title":"XS \/ Proteam Black Glossy","offer_id":68025001378068,"sku":"29649","price":3600.0,"currency_code":"USD","in_stock":true},{"title":"S \/ Proteam Black Glossy","offer_id":68025001410836,"sku":"29650","price":3600.0,"currency_code":"USD","in_stock":true},{"title":"M \/ Proteam Black Glossy","offer_id":68025001443604,"sku":"29651","price":3600.0,"currency_code":"USD","in_stock":true},{"title":"L \/ Proteam Black Glossy","offer_id":68025001476372,"sku":"29652","price":3600.0,"currency_code":"USD","in_stock":true},{"title":"XL \/ Proteam Black Glossy","offer_id":68025001509140,"sku":"29653","price":3600.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0856\/6698\/8308\/files\/765-Optimum-105-Proteam-Black.jpg?v=1794225821","url":"https:\/\/brimstonebicycles.shop\/products\/look-765-optimum-105-shimano-rs171-proteam-black-glossy","provider":"Brimstone Bicycles","version":"1.0","type":"link"}