{"product_id":"cyctrac-r18-carbon-aero-road-bike","title":"CYCTRAC R18 Carbon Aero Road Bike — Shimano 105 Di2 or WheelTop Wireless 13S","description":"\u003cp\u003eThe CYCTRAC R18 is a full-carbon aero road bike built on a T800\/T1000 high-modulus frame with fully internal cable routing, finished at \u003cstrong\u003e7.7–7.8 kg\u003c\/strong\u003e depending on build. It is aimed at riders who want race geometry and a carbon wheelset without paying mainstream-brand prices, and it is one of the few complete bikes offered with a \u003cstrong\u003eWheelTop wireless 13-speed\u003c\/strong\u003e groupset alongside the usual Shimano options.\u003c\/p\u003e\n\n\u003ch2\u003eWhich groupset should you choose?\u003c\/h2\u003e\n\u003cp\u003eThree builds share the same frame, fork, cockpit and wheelset, so the choice is purely about shifting.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheelTop GEX 1×13S wireless\u003c\/strong\u003e — no front derailleur, no shift cables, and an 11–46T cassette that covers steep climbs on a single ring. The simplest drivetrain here to maintain, and the lightest on cable friction. Best if you ride mixed terrain and dislike front-shift faff.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShimano 105 R7120 2×12S hydraulic\u003c\/strong\u003e — mechanical shifting with hydraulic discs. No batteries to charge, no firmware, and parts available in any bike shop worldwide. Best if you tour, race far from home, or simply prefer cables.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShimano 105 R7170 Di2 2×12S\u003c\/strong\u003e — semi-wireless electronic shifting with the tightest gear steps of the three. Best for racing and fast group rides where consistent, instant shifts under load matter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow much does the CYCTRAC R18 weigh?\u003c\/h2\u003e\n\u003cp\u003eBetween \u003cstrong\u003e7.7 kg and 7.8 kg\u003c\/strong\u003e depending on build and size. That figure already includes the 58 mm carbon wheelset and carbon integrated cockpit — components that are usually an upgrade on bikes at this price, and the reason the R18 lands close to bikes costing two to three times more.\u003c\/p\u003e\n\n\u003ch2\u003eWhat does the aero frame and integrated cockpit actually do?\u003c\/h2\u003e\n\u003cp\u003eThe R18 frame uses an aero tube profile with every cable and hose routed inside the one-piece carbon handlebar-and-stem unit (400 × 90 mm) and through the headset, so nothing sits in the airflow at the front of the bike. The seat post is a matching aero carbon section with a hidden clamp. In practice the payoff is at sustained speed — solo efforts, flat road racing, triathlon and time trial — rather than at climbing pace.\u003c\/p\u003e\n\n\u003ch2\u003eWhich size fits you?\u003c\/h2\u003e\n\u003cp\u003eFive frame sizes cover riders from roughly 155 cm to 195 cm. If you fall between two sizes, the smaller frame gives a more aggressive, aero position and the larger gives more comfort over distance.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eFrame size\u003c\/th\u003e\n\u003cth\u003eRider height\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e43 cm\u003c\/td\u003e\n\u003ctd\u003e155–165 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e46 cm\u003c\/td\u003e\n\u003ctd\u003e165–175 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e48 cm\u003c\/td\u003e\n\u003ctd\u003e172–182 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e51 cm\u003c\/td\u003e\n\u003ctd\u003e178–188 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e54 cm\u003c\/td\u003e\n\u003ctd\u003e185–195 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eFrame\u003c\/th\u003e\n\u003ctd\u003eR18 high-modulus carbon T800 \u0026amp; T1000, aero profile, internal cables, disc, thru-axle 12 × 142\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFork\u003c\/th\u003e\n\u003ctd\u003eR18 high-modulus carbon T800, disc, thru-axle 12 × 100, 700C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCockpit\u003c\/th\u003e\n\u003ctd\u003eOne-piece carbon integrated handlebar and stem, 400 × 90 mm, fully internal routing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSeat post\u003c\/th\u003e\n\u003ctd\u003eHigh-modulus carbon, aero racing profile, hidden frame clamp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRims\u003c\/th\u003e\n\u003ctd\u003eIRS high-modulus carbon, 58 mm deep, 7.2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHubs\u003c\/th\u003e\n\u003ctd\u003eRS-H280 alloy ultralight, 54T ratchet, 4 sealed bearings, centerlock, 20F\/20R\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSpokes\u003c\/th\u003e\n\u003ctd\u003eHigh-modulus carbon, 5.2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTyres\u003c\/th\u003e\n\u003ctd\u003eMaxxis Pursuer foldable, 700 × 28C, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBrakes\u003c\/th\u003e\n\u003ctd\u003eHydraulic disc, 160\/160 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeadset\u003c\/th\u003e\n\u003ctd\u003eCNC alloy, sealed bearings, 52 × 52 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBottom bracket\u003c\/th\u003e\n\u003ctd\u003eThreaded, 147 × 24 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSaddle\u003c\/th\u003e\n\u003ctd\u003eRS carbon fibre, ultralight racing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWheel size\u003c\/th\u003e\n\u003ctd\u003e700C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFrame sizes\u003c\/th\u003e\n\u003ctd\u003e43 \/ 46 \/ 48 \/ 51 \/ 54 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eColours\u003c\/th\u003e\n\u003ctd\u003eWhite \/ Matte Black \/ Matte Blue\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNet weight\u003c\/th\u003e\n\u003ctd\u003e7.7–7.8 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eDrivetrain by build\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eBuild\u003c\/th\u003e\n\u003cth\u003eShifters \u0026amp; derailleurs\u003c\/th\u003e\n\u003cth\u003eCrankset\u003c\/th\u003e\n\u003cth\u003eCassette\u003c\/th\u003e\n\u003cth\u003eChain\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWheelTop wireless\u003c\/td\u003e\n\u003ctd\u003eWheelTop GEX 1×13S wireless, rear only\u003c\/td\u003e\n\u003ctd\u003eRS alloy hollow, 48T\u003c\/td\u003e\n\u003ctd\u003eSunshine 13S, 11–46T\u003c\/td\u003e\n\u003ctd\u003eSUMC 13S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShimano 105 R7120\u003c\/td\u003e\n\u003ctd\u003e105 R7120 2×12S hydraulic, R7100 front \u0026amp; rear\u003c\/td\u003e\n\u003ctd\u003e105 R7100 hollow, 34\/50T\u003c\/td\u003e\n\u003ctd\u003e105 R7100, 11–34T\u003c\/td\u003e\n\u003ctd\u003eShimano M7100 12S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShimano 105 Di2\u003c\/td\u003e\n\u003ctd\u003e105 R7170 2×12S Di2, R7170 front, R7150 rear\u003c\/td\u003e\n\u003ctd\u003e105 R7100 hollow, 34\/50T\u003c\/td\u003e\n\u003ctd\u003e105 R7100, 11–34T\u003c\/td\u003e\n\u003ctd\u003eShimano HG6100 12S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat's in the box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCYCTRAC R18 bike, assembled and boxed\u003c\/li\u003e\n\u003cli\u003eAlloy pedals with sealed bearings\u003c\/li\u003e\n\u003cli\u003ePC bottle cage and basic tool kit\u003c\/li\u003e\n\u003cli\u003eSafety reflectors for handlebar, seat post and both wheels\u003c\/li\u003e\n\u003cli\u003eManual and warranty card\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eShipping and delivery\u003c\/h2\u003e\n\u003cp\u003eShipped from Hong Kong in a padded bike box. Hong Kong customers can choose local delivery or self pick-up at checkout; international shipping is calculated at checkout by destination. Because the bike is packed 90% assembled, a bike shop or a confident home mechanic needs about 30 minutes to fit the bars, wheels, pedals and saddle and check the brakes before the first ride.\u003c\/p\u003e","brand":"CYCTRAC","offers":[{"title":"WheelTop GEX-13S \/ White \/ 43 (155-165)CM","offer_id":48518426788045,"sku":null,"price":10480.0,"currency_code":"HKD","in_stock":true},{"title":"WheelTop GEX-13S \/ White \/ 46 (165-175)CM","offer_id":48518433505485,"sku":null,"price":10480.0,"currency_code":"HKD","in_stock":true},{"title":"WheelTop GEX-13S \/ White \/ 48 (172-182)CM","offer_id":48518433538253,"sku":null,"price":10480.0,"currency_code":"HKD","in_stock":true},{"title":"WheelTop GEX-13S \/ White \/ 51 (178-188)CM","offer_id":48518433571021,"sku":null,"price":10480.0,"currency_code":"HKD","in_stock":true},{"title":"WheelTop GEX-13S \/ White \/ 54 (185-195)CM","offer_id":48518433603789,"sku":null,"price":10480.0,"currency_code":"HKD","in_stock":true},{"title":"WheelTop GEX-13S 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