{"product_id":"velocity-stack-set-black-for-rennen-itb-porsche-911-965","title":"Velocity Stack Set Black for Rennen ITB. Porsche 911 \/ 964","description":"\u003cdiv class=\"productDescriptionContainerTop\"\u003e\n\u003cdiv class=\"productInfoBox\"\u003e\n\u003cdiv class=\"prod-main-txt\" title=\"View product details\"\u003e\n\u003cdiv class=\"txtbox\"\u003e\n\u003cp\u003e\u003cb\u003eRennen ITB Black Velocity Stacks for Air-Cooled Porsche 911 - Set of 6\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003ePrecision-Engineered Velocity Stacks Designed Exclusively for Rennen ITBs\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eRennen ITB Velocity Stacks have been specifically developed for use with the innovative Rennen ITB by JSR roller barrel throttle body system. Designed to maximise airflow efficiency and complement the advanced induction characteristics of the Rennen ITB, these premium velocity stacks help optimise engine breathing, improve airflow stability and support maximum performance from your air-cooled Porsche 911 engine.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFits:\u003c\/b\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePorsche 911 1974-1977 2.7L \/ 1976-77 3.0 Carrera\u003c\/li\u003e\n\u003cli\u003ePorsche 911 1978-1983 3.0L \/ SC\u003c\/li\u003e\n\u003cli\u003ePorsche 911 1984-1986 3.2L\u003c\/li\u003e\n\u003cli\u003ePorsche 911 1987-1989 3.2L G50\u003c\/li\u003e\n\u003cli\u003ePorsche 964 (911) C2 1989-93\u003c\/li\u003e\n\u003cli\u003ePorsche 964 (911) C4 1989-93\u003c\/li\u003e\n\u003cli\u003ePorsche 964 (911) RS 3.6L 1991-93\u003c\/li\u003e\n\u003cli\u003ePorsche 964 (911) RS 3.8L 1991-93\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eManufactured to exacting standards and available in both\u003cspan\u003e \u003c\/span\u003e\u003cb\u003esilver\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cb\u003eblack finishes\u003c\/b\u003e, these velocity stacks provide the perfect finishing touch for high-performance Porsche engine builds, restomods, track cars and motorsport applications.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eAvailable Sizes and Engine Size Combinations\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eEach velocity stack features an overall length of\u003cspan\u003e \u003c\/span\u003e\u003cb\u003e120mm\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003eand is available in three internal diameter options to suit a variety of engine specifications and performance requirements:\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e2.7ltr \/ 3.0ltr Engine - 45mm Internal Diameter (ID)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e3.2ltr \/ 3.5ltr \/ 3.6ltr Engine - 48mm Internal Diameter (ID)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e4.0ltr Engine - 50mm Internal Diameter (ID)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThese sizing options allow engine builders and tuners to select the most suitable intake configuration based on engine displacement, camshaft profile, intended RPM range and performance objectives.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eOptimised Airflow Performance\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThe carefully designed bellmouth entry profile promotes smooth airflow into the throttle body, helping reduce turbulence and improve air velocity. This allows the induction system to operate more efficiently throughout the rev range while maintaining the sharp throttle response that the Rennen ITB system is renowned for.\u003c\/p\u003e\n\u003cp\u003eBy creating a smoother transition for incoming air, Rennen Velocity Stacks contribute to improved cylinder filling and consistent airflow delivery across all cylinders.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003ePremium Construction\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eDesigned to match the quality and engineering standards of the Rennen ITB system, these velocity stacks offer exceptional durability and an outstanding motorsport-inspired appearance.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eKey Features\u003c\/b\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eDesigned exclusively for Rennen ITBs by JSR\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAvailable in silver or black finish 120mm overall length\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAvailable in 45mm, 48mm and 50mm internal diameters\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePrecision-machined construction\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOptimised bellmouth profile for improved airflow\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSupports enhanced induction efficiency\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eComplements Rennen roller barrel throttle body systems\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSuitable for road, track and race applications\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDesigned for air-cooled Porsche 911 performance engines\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eThe Perfect Addition to Your Rennen ITB Installation\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eWhether you are building a fast-road Porsche 911, a high-performance restomod, or a dedicated motorsport engine, Rennen ITB Velocity Stacks provide the ideal airflow solution for your induction system. Designed specifically to work with the Rennen roller barrel throttle bodies, they help deliver the performance, drivability and appearance expected from a premium Porsche performance upgrade.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Rennen Plus","offers":[{"title":"Default Title","offer_id":53625330368791,"sku":null,"price":0.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0975\/6226\/3831\/files\/JSR52.webp?v=1783321710","url":"https:\/\/rennenplus.com.au\/products\/velocity-stack-set-black-for-rennen-itb-porsche-911-965","provider":"Rennen Plus","version":"1.0","type":"link"}