{"product_id":"hope-rx4-sl-flatmount-disc-brake-caliper-for-shimano-campagnolo-bikes","title":"Hope RX4+ SL Flatmount Disc Brake Caliper for Shimano \u0026 Campagnolo Bikes","description":"\u003cp\u003eThe Hope RX4+ SL Flatmount Disc Brake Caliper is a refined evolution for 2026, designed to deliver exceptional braking performance with compatibility for both Shimano and Campagnolo systems. This caliper features a sleek, slimline 4-piston design crafted from CNC machined 2014 T6 aluminium, ensuring a lightweight yet robust structure. The new bore cap design reduces the caliper's overall width, enhancing frame compatibility without compromising strength.\u003c\/p\u003e\n\n\u003cp\u003eEngineered for precision, the monobloc construction minimizes lever fuzziness and brake pad rub, resulting in a crisp and reliable braking feel. With top-entry pad fitting and availability in all Hope anodised colours, the RX4+ SL caliper not only performs but also complements your bike’s aesthetic. Its adaptability to Flatmount front and rear mounts with an included adapter supports a variety of rotor sizes, accommodating 180\/160mm front and 160\/140mm rear rotors depending on your fork or frame mount type.\u003c\/p\u003e\n\n\u003ch3\u003eWhat It’s Good For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eProviding powerful and consistent braking performance with a lightweight design\u003c\/li\u003e\n  \u003cli\u003eCompatibility with a wide range of Shimano and Campagnolo groupsets\u003c\/li\u003e\n  \u003cli\u003eEnsuring precise braking feel with reduced lever fuzz and minimal pad rub\u003c\/li\u003e\n  \u003cli\u003eEnhancing bike aesthetics with a choice of anodised colour options\u003c\/li\u003e\n  \u003cli\u003eFlexible rotor size compatibility through adaptable mounting options\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat It’s NOT Good For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eUse with non-Flatmount brake mounts without proper adapters\u003c\/li\u003e\n  \u003cli\u003eApplications requiring brake systems outside Shimano or Campagnolo compatibility\u003c\/li\u003e\n  \u003cli\u003eRiders seeking calipers designed for non-disc brake setups\u003c\/li\u003e\n  \u003cli\u003eFrames or forks incompatible with 140\/160\/180mm rotor sizes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs the RX4+ SL compatible with electronic shifting groupsets?\u003c\/strong\u003e\u003cbr\u003eYes, it works seamlessly with Shimano Di2 and Campagnolo electronic groupsets, including Dura Ace Di2 and Super Record.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use this caliper on both front and rear brakes?\u003c\/strong\u003e\u003cbr\u003eAbsolutely, it is designed for Flatmount front and rear applications with the appropriate adapter for different rotor sizes.\u003c\/p\u003e","brand":"Hope","offers":[{"title":"Flat Mount + 20 \/ Blue \/ Mineral Oil","offer_id":46601922937007,"sku":"HBSPC103B","price":105.8,"currency_code":"GBP","in_stock":true},{"title":"Flat Mount + 20 \/ Orange \/ Mineral Oil","offer_id":46601922969775,"sku":"HBSPC103C","price":105.8,"currency_code":"GBP","in_stock":true},{"title":"Flat Mount + 20 \/ Smoke \/ Mineral Oil","offer_id":46601923002543,"sku":"HBSPC103K","price":105.8,"currency_code":"GBP","in_stock":true},{"title":"Flat Mount + 20 \/ Black \/ Mineral Oil","offer_id":46601923035311,"sku":"HBSPC103N","price":105.8,"currency_code":"GBP","in_stock":true},{"title":"Flat Mount + 20 \/ Purple \/ Mineral Oil","offer_id":46601923068079,"sku":"HBSPC103PU","price":105.8,"currency_code":"GBP","in_stock":true},{"title":"Flat Mount + 20 \/ Red \/ Mineral Oil","offer_id":46601923100847,"sku":"HBSPC103R","price":105.8,"currency_code":"GBP","in_stock":true},{"title":"Flat Mount + 20 \/ Silver \/ Mineral Oil","offer_id":46601923133615,"sku":"HBSPC103S","price":105.8,"currency_code":"GBP","in_stock":true},{"title":"Post Mount \/ Blue \/ Mineral Oil","offer_id":46601923166383,"sku":"HBSPC104B","price":105.8,"currency_code":"GBP","in_stock":true},{"title":"Post Mount \/ Orange \/ Mineral Oil","offer_id":46601923199151,"sku":"HBSPC104C","price":105.8,"currency_code":"GBP","in_stock":true},{"title":"Post Mount \/ Smoke \/ Mineral Oil","offer_id":46601923231919,"sku":"HBSPC104K","price":105.8,"currency_code":"GBP","in_stock":true},{"title":"Post Mount \/ Black \/ Mineral Oil","offer_id":46601923264687,"sku":"HBSPC104N","price":105.8,"currency_code":"GBP","in_stock":true},{"title":"Post Mount \/ Purple \/ Mineral Oil","offer_id":46601923297455,"sku":"HBSPC104PU","price":105.8,"currency_code":"GBP","in_stock":true},{"title":"Post Mount \/ Red \/ Mineral Oil","offer_id":46601923330223,"sku":"HBSPC104R","price":105.8,"currency_code":"GBP","in_stock":true},{"title":"Post Mount \/ Silver \/ Mineral Oil","offer_id":46601923362991,"sku":"HBSPC104S","price":105.8,"currency_code":"GBP","in_stock":true},{"title":"Flat Mount - 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