{"product_id":"tripeak-jetstream-pro-ceramic-pulley-wheel-12t-18t-shimano-11-12s-asymmetric-oversized-pulley-wheel-aopw","title":"TRiPEAK Jetstream Pro Ceramic Pulley Wheel 12T\/18T | Shimano 11\/12s | Asymmetric Oversized Pulley Wheel (AOPW) OSPW","description":"\u003cp\u003e\u003cstrong\u003e12T upper \/ 18T lower oversize pulley | NC Race G3 ceramic bearings | Patented asymmetric frame\u003c\/strong\u003e\u003cstrong\u003e | 4-year warranty\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUpper pulley 9g | Lower pulley 30g | Supra LV lubricant included\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOversized pulley wheels reduce chain deflection angle and rotational resistance.\u003c\/p\u003e\n\u003cp\u003eWhat TRiPEAK solved with the AOPW is the installation problem. Fitting an 18T lower pulley into a standard Dura-Ace cage normally requires chain length adjustment and cage modification. TRiPEAK's patented asymmetric frame design allows the 18T pulley to fit the original derailleur cage with minimal modification, installed with nothing more than a hex wrench.\u003c\/p\u003e\n\u003cp\u003eThe JetStream Pro bearing system consists of NC Race nano-coated races, G3-grade ceramic balls, zero-contact seals, and Supra LV low-viscosity lubricant. \u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003ePatented Asymmetric Frame Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0760\/3503\/1340\/files\/Asymmetric_Design.jpg?v=1778828894\" alt=\"\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTRiPEAK's asymmetric pulley frame is the key engineering feature that makes AOPW work without the usual installation headaches.\u003c\/p\u003e\n\u003cp\u003eBy offsetting the frame geometry, the 18T lower pulley fits within the envelope of the standard cage.\u003c\/p\u003e\n\u003cp\u003eNo chain length adjustment required in most cases, though checking B-tension spacing after installation is still recommended.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e18T Lower Pulley — Reduced Chain Deflection\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0760\/3503\/1340\/files\/18T_OVER_SIZE_PULLEY-2.jpg?v=1778828894\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e18T significantly reduces the chain wrap angle compared to the original 11T lower pulley.\u003c\/p\u003e\n\u003cp\u003eLess angle = less deflection = less energy lost to chain articulation at that point in the chain.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eInjection-Moulded PA+GF Pulley Body\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0760\/3503\/1340\/files\/Injection_Molding.jpg?v=1778828895\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003eThe pulley body is injection-moulded from a PA+GF (polyamide + glass fibre) composite rather than machined aluminium.\u003c\/p\u003e\n\u003cp\u003eInjection moulding fully encases the bearing with a zero-tolerance fit. There's no press-fit gap between bearing and pulley body that can introduce play or noise over time.\u003c\/p\u003e\n\u003cp\u003eThe composite material is also more wear-resistant than aluminium against chain contact, which extends the service life of both the pulley and the chain itself.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eNarrow-Wide Tooth Profile\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0760\/3503\/1340\/files\/NARROW_WIDE_TOOTH.jpg?v=1778828894\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003eThe pulley uses a narrow-wide tooth pattern that alternates tooth thickness to match the inner and outer links of the chain.\u003c\/p\u003e\n\u003cp\u003eThis improves chain retention on the pulley and reduces the chance of chain skip under hard acceleration or rough road conditions.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eHollow Frame Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0760\/3503\/1340\/files\/Hollow_Frame.jpg?v=1778828895\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003eThe 6061 aluminium pulley frame (cap) uses a hollow structure that increases bearing diameter without adding weight.\u003c\/p\u003e\n\u003cp\u003eA larger bearing running at the same RPM has better load distribution and longer service life. The hollow design also reduces the impact of any debris intrusion on rotational consistency.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eNC Race G3 Ceramic Bearings\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0760\/3503\/1340\/files\/G3_CERAMIC_BALL.jpg?v=1778828894\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003eNC Race bearings feature a nano coating on both inner and outer races, reducing the dynamic coefficient of friction to as low as 0.03.\u003c\/p\u003e\n\u003cp\u003eG3-grade ceramic balls are precision-ground to tighter sphericity tolerances than standard ceramic bearings, lowering rotational resistance and extending bearing life. TRiPEAK backs the JetStream Pro bearing system with a 4-year warranty.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eZero Contact Seal\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0760\/3503\/1340\/files\/ZERO_Contact_Seal.jpg?v=1778828894\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003eThe bearings use a non-contact seal that fully covers the bearing race without physically touching the inner ring with greatly reduces drag.\u003c\/p\u003e\n\u003cp\u003eZero-contact seals provide coverage and protection without the friction penalty.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eSupra LV Low-Viscosity Lubricant\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0760\/3503\/1340\/files\/SUPRA_LV_FLUID-240430111059-1.jpg?v=1778828895\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003eSupra LV is TRiPEAK's ceramic-specific low-viscosity lubricant.\u003c\/p\u003e\n\u003cp\u003eIt's formulated for high-speed, low-load applications like pulley bearings. Easy to maintain without removing the bearing seal.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUpper Pulley\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12T | 9g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLower Pulley\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e18T | 30g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBearing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNC Race G3 Ceramic - JetStream Pro series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePulley Frame (Cap)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6061 Aluminium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePulley Body\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePA+GF injection-moulded composite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eWhat's Included?\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eTRiPEAK Asymmetric Oversized Pulley Wheel 12T Upper Pulley\u003c\/li\u003e\n\u003cli\u003eTRiPEAK Asymmetric Oversized Pulley Wheel 18T Lower Pulley of your chosen colour\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eInstallation requires only a standard hex wrench with no chain removal or length adjustment in most cases.\u003c\/p\u003e\n\u003cp\u003eAfter installation, check chain length and B-tension spacing before riding.\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"TRiPEAK Jetstream Pro AOPW Manual\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0760\/3503\/1340\/files\/TRiPEAK_Oversized_Pulley_Wheel_Installation_Manual.pdf?v=1778828488\" target=\"_blank\"\u003eDownload PDF Installation Manual.\u003c\/a\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eLinks\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eView the TRiPEAK Collection \u003ca title=\"TiParts TRiPEAK Collection\" href=\"https:\/\/tipartstitanium.com\/collections\/tripeak?_pos=1\u0026amp;_psq=tripeak\u0026amp;_ss=e\u0026amp;_v=1.0\"\u003eHere\u003c\/a\u003e\u003cbr\u003eView other Pulley Wheels \u003ca title=\"TiParts Pulley\/Jockey Wheel\" href=\"https:\/\/tipartstitanium.com\/collections\/pulley-jockey-wheels\"\u003eHere\u003c\/a\u003e\u003c\/p\u003e","brand":"TRiPEAK","offers":[{"title":"R81xx\/R71xx \/ Black","offer_id":53213513023788,"sku":null,"price":228.0,"currency_code":"SGD","in_stock":true},{"title":"R81xx\/R71xx \/ Dark 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Silver","offer_id":53213818552620,"sku":null,"price":228.0,"currency_code":"SGD","in_stock":true},{"title":"R91xx \/ Black","offer_id":53213513253164,"sku":null,"price":228.0,"currency_code":"SGD","in_stock":true},{"title":"R91xx \/ Dark Blue","offer_id":53213513285932,"sku":null,"price":228.0,"currency_code":"SGD","in_stock":true},{"title":"R91xx \/ Light Blue","offer_id":53213513318700,"sku":null,"price":228.0,"currency_code":"SGD","in_stock":true},{"title":"R91xx \/ Gold","offer_id":53213513351468,"sku":null,"price":228.0,"currency_code":"SGD","in_stock":true},{"title":"R91xx \/ Green","offer_id":53213818585388,"sku":null,"price":228.0,"currency_code":"SGD","in_stock":true},{"title":"R91xx \/ Orange","offer_id":53213513384236,"sku":null,"price":228.0,"currency_code":"SGD","in_stock":true},{"title":"R91xx \/ Pink","offer_id":53213513417004,"sku":null,"price":228.0,"currency_code":"SGD","in_stock":true},{"title":"R91xx \/ Purple","offer_id":53213513449772,"sku":null,"price":228.0,"currency_code":"SGD","in_stock":true},{"title":"R91xx \/ Red","offer_id":53213818618156,"sku":null,"price":228.0,"currency_code":"SGD","in_stock":true},{"title":"R91xx \/ Silver","offer_id":53213818650924,"sku":null,"price":228.0,"currency_code":"SGD","in_stock":true},{"title":"R92xx \/ Black","offer_id":53213818683692,"sku":null,"price":228.0,"currency_code":"SGD","in_stock":true},{"title":"R92xx \/ Dark Blue","offer_id":53213818716460,"sku":null,"price":228.0,"currency_code":"SGD","in_stock":true},{"title":"R92xx \/ Light Blue","offer_id":53213818749228,"sku":null,"price":228.0,"currency_code":"SGD","in_stock":true},{"title":"R92xx \/ Gold","offer_id":53213818781996,"sku":null,"price":228.0,"currency_code":"SGD","in_stock":true},{"title":"R92xx \/ Green","offer_id":53213818814764,"sku":null,"price":228.0,"currency_code":"SGD","in_stock":true},{"title":"R92xx \/ Orange","offer_id":53213818847532,"sku":null,"price":228.0,"currency_code":"SGD","in_stock":true},{"title":"R92xx \/ Pink","offer_id":53213818880300,"sku":null,"price":228.0,"currency_code":"SGD","in_stock":true},{"title":"R92xx \/ Purple","offer_id":53213818913068,"sku":null,"price":228.0,"currency_code":"SGD","in_stock":true},{"title":"R92xx \/ Red","offer_id":53213818945836,"sku":null,"price":228.0,"currency_code":"SGD","in_stock":true},{"title":"R92xx \/ Silver","offer_id":53213818978604,"sku":null,"price":228.0,"currency_code":"SGD","in_stock":true},{"title":"R80xx\/R70xx-GS \/ Black","offer_id":53213819011372,"sku":null,"price":228.0,"currency_code":"SGD","in_stock":true},{"title":"R80xx\/R70xx-GS \/ Dark Blue","offer_id":53213819044140,"sku":null,"price":228.0,"currency_code":"SGD","in_stock":true},{"title":"R80xx\/R70xx-GS \/ Light Blue","offer_id":53213819076908,"sku":null,"price":228.0,"currency_code":"SGD","in_stock":true},{"title":"R80xx\/R70xx-GS \/ Gold","offer_id":53213819109676,"sku":null,"price":228.0,"currency_code":"SGD","in_stock":true},{"title":"R80xx\/R70xx-GS \/ Green","offer_id":53213819142444,"sku":null,"price":228.0,"currency_code":"SGD","in_stock":true},{"title":"R80xx\/R70xx-GS \/ Orange","offer_id":53213819175212,"sku":null,"price":228.0,"currency_code":"SGD","in_stock":true},{"title":"R80xx\/R70xx-GS \/ Pink","offer_id":53213819207980,"sku":null,"price":228.0,"currency_code":"SGD","in_stock":true},{"title":"R80xx\/R70xx-GS \/ Purple","offer_id":53213819240748,"sku":null,"price":228.0,"currency_code":"SGD","in_stock":true},{"title":"R80xx\/R70xx-GS \/ Red","offer_id":53213819273516,"sku":null,"price":228.0,"currency_code":"SGD","in_stock":true},{"title":"R80xx\/R70xx-GS \/ 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