{"product_id":"tripeak-jetstream-pro-aopw-aero-oversized-pulley-wheel-system","title":"Tripeak Jetstream Pro AOPW-AERO Oversized Pulley Wheel System 12\/18T - SHIMANO 12s \/ SRAM E1 12s","description":"\u003ch2\u003e\u003cstrong\u003eAerodynamics Evolved. Performance Refined.\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe Tripeak Jetstream Pro AOPW-AERO is the latest evolution of Tripeak's oversized pulley wheel system, developed for riders looking to optimise every detail of their drivetrain. Combining an all-new aerodynamic cage design with oversized pulley technology, it's engineered to reduce drag, improve drivetrain efficiency and deliver consistently smooth, precise shifting. From the aerodynamic Flow-Cover to the oversized 18T pulley and Nano-Coated Ceramic Bearings, every component has been designed to maximise efficiency without compromising durability or reliability.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eAerodynamic Flow-Cover design reduces drag by approximately 10–15%\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOversized 12T \/ 18T pulley configuration for improved drivetrain efficiency\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eInjection-moulded composite pulley construction\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNC Nano-Coated Ceramic Bearings with G3-grade ceramic balls, SUPRA LV FLUID included\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eZero Contact bearing seals and Supra LV low-viscosity lubricant\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNarrow-Wide tooth profile for quieter, more secure chain engagement\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePatented asymmetric cage design\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNo chain length adjustment required during installation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompatible with Shimano and SRAM 12-speed road drivetrains\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBacked by an industry-leading 4-year warranty\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eWeights - 9g Upper Pulley, 31g Lower Pulley\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eAerodynamic Flow-Cover Design\u003c\/h2\u003e\n\u003cp\u003eThe newly developed Flow-Cover surrounds the lower pulley with a smooth outer surface while incorporating an integrated inner guide plate to improve chain control. By refining airflow around one of the most turbulent areas of the drivetrain, the Jetstream Pro reduces aerodynamic drag by approximately \u003cstrong\u003e10–15%\u003c\/strong\u003e compared with Tripeak's previous AOPW design.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eWhy an 18T Pulley?\u003c\/h2\u003e\n\u003cp\u003eMost rear derailleurs use a range between 11t to 14t sized pulley wheels,  forcing the chain to bend through a relatively tight angle as it passes through the derailleur.\u003c\/p\u003e\n\u003cp\u003eThe Jetstream Pro increases this to an \u003cstrong\u003e18-tooth oversized pulley\u003c\/strong\u003e, allowing the chain to follow a shallower path with less articulation. Less chain deflection means lower mechanical resistance, smoother chain movement and more efficient power transfer.\u003c\/p\u003e\n\u003cp\u003eThe larger pulley also houses a larger bearing, which rotates more slowly for a given cadence. This helps reduce bearing loads while contributing to improved durability and consistently smooth performance over thousands of kilometres.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eWhy Composite Pulleys?\u003c\/h2\u003e\n\u003cp\u003eRather than pressing bearings into a traditional aluminium pulley, Tripeak uses an injection-moulded composite pulley that fully encapsulates the bearing.\u003c\/p\u003e\n\u003cp\u003eThis creates an exceptionally precise, zero-tolerance fit between the pulley body and bearing while increasing wear resistance and reducing drivetrain noise. The composite material is also kinder to the chain than a machined aluminium pulley, helping extend the service life of both the pulley wheels and the chain.\u003c\/p\u003e\n\u003cp\u003eCombined with Tripeak's Narrow-Wide tooth profile, the result is quieter operation, improved chain retention and smooth performance in all riding conditions.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eNano-Coated Ceramic Bearings\u003c\/h2\u003e\n\u003cp\u003eThe Jetstream Pro uses Tripeak's premium NC Nano-Coated Ceramic Bearings, featuring precision G3-grade ceramic balls, nano-coated bearing races and Supra LV low-viscosity lubricant.\u003c\/p\u003e\n\u003cp\u003eThe nano coating significantly reduces friction between the bearing surfaces while improving wear resistance, while the Zero Contact Seal protects against contamination without introducing unnecessary drag. Together, these technologies deliver exceptionally smooth rotation, long service life and consistent performance in real-world riding conditions.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe modular Jetstream Pro system includes all the hardware required for compatibility with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eShimano Dura-Ace R9200 12-speed\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eShimano Ultegra R8100 12-speed\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSRAM RED AXS E1 12-speed\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSRAM Force AXS E1 12-speed\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTripeak's patented asymmetric cage design allows the oversized pulley system to integrate seamlessly with the original derailleur architecture, without requiring chain length adjustments during installation.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eWhy We Stock It\u003c\/h2\u003e\n\u003cp\u003eOversized pulley systems are about far more than ceramic bearings. The Jetstream Pro stands out because every element has been engineered to work together—from the aerodynamic cage and oversized pulley geometry to the composite pulley construction and advanced bearing technology. It's a considered upgrade for riders looking to reduce drivetrain losses, improve shifting performance and build a bike where every detail has been carefully chosen.\u003c\/p\u003e\n\u003cp\u003e ______________________________________________________________________\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProven at the Highest Level\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003ePerformance isn't just developed in the workshop—it's proven in the peloton. The Tripeak Jetstream Pro AOPW-AERO is trusted by riders competing at the highest level of professional cycling, including the \u003cstrong\u003eXDS Astana Team\u003c\/strong\u003e and \u003cstrong\u003eLidl–Trek\u003c\/strong\u003e. Developed to meet the demands of WorldTour racing, it delivers the efficiency, reliability and precision shifting expected when every second counts.\u003c\/p\u003e","brand":"TRIPEAK","offers":[{"title":"Black","offer_id":57590837641560,"sku":"EMA-JW1218A-A12SCB-BLK","price":164.99,"currency_code":"GBP","in_stock":true},{"title":"Blue","offer_id":57590837674328,"sku":"EMA-JW1218A-A12SCB-BLU","price":164.99,"currency_code":"GBP","in_stock":false},{"title":"Gold","offer_id":57590837707096,"sku":"EMA-JW1218A-A12SCB-GOLD","price":164.99,"currency_code":"GBP","in_stock":false},{"title":"Red","offer_id":57590837739864,"sku":"EMA-JW1218A-A12SCB-RED","price":164.99,"currency_code":"GBP","in_stock":false},{"title":"Silver","offer_id":57590837772632,"sku":"EMA-JW1218A-A12SCB-SLVR","price":164.99,"currency_code":"GBP","in_stock":false},{"title":"Deep Blue","offer_id":57590837805400,"sku":"EMA-JW1218A-A12SCB-DBLU","price":164.99,"currency_code":"GBP","in_stock":false},{"title":"Green","offer_id":57590837838168,"sku":"EMA-JW1218A-A12SCB-GRN","price":164.99,"currency_code":"GBP","in_stock":false},{"title":"Orange","offer_id":57590837870936,"sku":"EMA-JW1218A-A12SCB-ORG","price":164.99,"currency_code":"GBP","in_stock":false},{"title":"Pink","offer_id":57590837903704,"sku":"EMA-JW1218A-A12SCB-PNK","price":164.99,"currency_code":"GBP","in_stock":false},{"title":"Purple","offer_id":57590837936472,"sku":"EMA-JW1218A-A12SCB-PUR","price":164.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/7611\/1704\/files\/AOPWAEROpackage_1.jpg?v=1782746369","url":"https:\/\/www.offthefront.cc\/products\/tripeak-jetstream-pro-aopw-aero-oversized-pulley-wheel-system","provider":"Off The Front","version":"1.0","type":"link"}