{"product_id":"spinergy-rev-x-extralight-650c-tubular-rear-wheel","title":"Spinergy Rev-X Extralight 650c Tubular Rear Wheel","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eSpinergy Rev-X Extralight 650c Tubular Rear Wheel\u003c\/strong\u003e exists at a precise intersection of need and engineering. Not every rider runs 700c. Smaller-statured road racers, triathletes running a mixed-diameter setup, and time trial specialists working with 650c geometry all require a rear wheel that doesn't compromise on performance just because the diameter is smaller. Spinergy built the Rev-X Extralight for exactly that rider — someone who has already made the considered choice to run 650c and now wants a rear wheel that rewards that decision rather than just accommodating it.\u003c\/p\u003e\n\n\u003cp\u003eThe tubular format here is deliberate. A tubular rim carries none of the structural obligations of a clincher — no bead hook, no retention geometry to engineer around — which means every material and layering decision in the rim construction can be made with performance as the sole priority. The result is a rim that can be kept light without sacrificing the lateral stiffness you need when you're driving hard through a corner or accelerating out of a technical section. Rotational inertia matters on a rear wheel in a way that's easy to dismiss until you've ridden one that gets it right. The Rev-X Extralight is built around that understanding.\u003c\/p\u003e\n\n\u003cp\u003eWhat sets any Rev-X wheel apart visually and mechanically is Spinergy's PBO fiber composite spoke system. These are not conventional steel spokes, and they're not simply a cosmetic choice. PBO fiber offers high tensile strength at a fraction of the weight of metal, and the spokes carry a degree of natural compliance that rigid metal cannot replicate. After several hours in the saddle — particularly on rougher road surfaces — that compliance translates into a ride quality that feels more forgiving without feeling vague. It's a wheel designed as an integrated system, and on a 650c tubular rear wheel, that engineering coherence makes a genuine difference.\u003c\/p\u003e\n\n\u003ch3\u003eSpinergy Rev-X Extralight 650c Tubular Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWheel Size:\u003c\/strong\u003e 650c\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTire Interface:\u003c\/strong\u003e Tubular\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWheel Position:\u003c\/strong\u003e Rear\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpoke Type:\u003c\/strong\u003e PBO fiber composite\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Drivetrain:\u003c\/strong\u003e Shimano \/ SRAM 10-speed\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntended Use:\u003c\/strong\u003e Road racing, triathlon, time trial\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRim Construction:\u003c\/strong\u003e Carbon composite\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAxle Standard:\u003c\/strong\u003e Quick release\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDesign Benefits\u003c\/h3\u003e\n\u003col class=\"design_benefits\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003e650c Geometry, Full Performance:\u003c\/strong\u003e The 650c diameter is often associated with smaller riders or specific triathlon configurations, but it carries real aerodynamic and handling advantages when matched to the right frame geometry. This wheel is built to deliver genuine race-day performance at that diameter — not a scaled-down compromise.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTubular Rim Architecture:\u003c\/strong\u003e Without the structural demands of clincher bead retention, the tubular rim can be optimized purely for stiffness-to-weight. That translates to \u003cstrong\u003emore responsive acceleration\u003c\/strong\u003e and a rim profile that stays true under sustained power output, which matters most when you're deep into a race or a long training effort.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePBO Composite Spoke System:\u003c\/strong\u003e Spinergy's signature spoke design uses PBO fiber — a high-strength, low-weight material that introduces a controlled level of compliance into the wheel structure. On rough roads, this reduces the harshness transmitted through the drivetrain contact point and contributes to a more connected feel without compromising stiffness where it counts.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReduced Rotational Weight:\u003c\/strong\u003e The extralight designation within the Rev-X family places this wheel at the lower end of the weight range for Spinergy's rear wheels. \u003cstrong\u003eLower rotational mass\u003c\/strong\u003e means faster response during accelerations and less fatigue on repeated efforts — a characteristic that becomes increasingly noticeable over the course of a race.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShimano and SRAM 10-Speed Compatibility:\u003c\/strong\u003e The hub is built to work directly with Shimano and SRAM 10-speed drivetrains without adapters or modifications, keeping the setup clean and the drivetrain engagement precise from day one.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eFinal Take\u003c\/h3\u003e\n\u003cp\u003eThe Rev-X Extralight 650c Tubular Rear Wheel is built for the rider who has already committed to a 650c setup and wants a rear wheel that matches that commitment with genuine engineering intent. Triathletes running a front-rear diameter split, smaller-statured road racers, and time trial riders who prioritize rotational weight and system stiffness will find this wheel delivers where it needs to. It's a specific tool for a specific purpose — and it does that job well.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Spinergy","offers":[{"title":"No Color \/ Shimano \/ SRAM 10s","offer_id":43520816742444,"sku":"10043969","price":450.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/ricycles.com\/products\/spinergy-rev-x-extralight-650c-tubular-rear-wheel","provider":"RA Cycles","version":"1.0","type":"link"}