{"product_id":"roller-barrel-itb-upgrade-set-for-3-stud-manifold-porsche-964-4-0ltr-1","title":"Roller Barrel ITB Upgrade Set for 3 Stud Manifold. Porsche 964 4.0ltr","description":"\u003cp\u003e\u003cb\u003eRennen by JSR Individual Throttle Bodies (ITB) Upgrade for Modified Porsche 964 4.0ltr Engine\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eDeveloped for serious air-cooled Porsche performance builds, the Rennen by JSR Individual Throttle Bodies (ITB) Upgrade Kit for the Porsche 964 4.0ltr engine delivers exceptional airflow, lightning-fast throttle response and a true motorsport-inspired driving experience. Specifically configured for modified 4.0ltr engines featuring 45mm inlet bores and 50mm internal diameter Velocity Stacks, this induction package has been engineered to support the increased airflow demands of high-output naturally aspirated engine builds.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFits:\u003c\/b\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003ePorsche 964 (911) C2 1989-93\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePorsche 964 (911) C4 1989-93\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePorsche 964 (911) RS 3.6L 1991-93\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePorsche 964 (911) RS 3.8L 1991-93\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThis premium specification combines Gun Metal Individual Throttle Bodies, 50mm Silver Velocity Stacks, the Rennen Classic Mesh and Foam Air Filter Set and a Mechanical Throttle Linkage System, creating one of the most capable and visually impressive induction systems available for the Porsche 964 platform.\u003c\/p\u003e\n\u003cp\u003eWhether fitted to a fast-road build, high-end restomod, track-focused machine or bespoke engine project, this system transforms the character of the Porsche flat-six while maximising its performance potential.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eDesigned for Modified 4.0ltr Engines\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThis ITB system has been developed specifically for enlarged-capacity Porsche 964 engines built to 4.0ltr and featuring 45mm inlet bores.\u003c\/p\u003e\n\u003cp\u003eThe larger bore specification provides:\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eIncreased airflow capacity\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eImproved cylinder filling\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEnhanced high-RPM breathing\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eGreater power potential\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eImproved volumetric efficiency\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEnhanced throttle response\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOptimised compatibility with performance cylinder heads and camshafts\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eCombined with the 50mm velocity stack configuration, the system supports the airflow requirements of serious performance engine builds.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWhy Upgrade to Individual Throttle Bodies?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eUnlike a conventional plenum intake system, Individual Throttle Bodies provide each cylinder with its own dedicated throttle opening.\u003c\/p\u003e\n\u003cp\u003eBenefits include:\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eInstant throttle response\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eReduced intake restriction\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eImproved airflow distribution\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEnhanced engine breathing\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSharper acceleration\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIncreased power potential\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eGreater tuning flexibility\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMotorsport-inspired driving experience\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe result is an engine that feels more responsive, more aggressive and more connected to driver inputs throughout the rev range.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eGun Metal Throttle Bodies\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThe Gun Metal finish provides a sophisticated motorsport appearance while showcasing the engineering quality of the induction system.\u003c\/p\u003e\n\u003cp\u003eBenefits include:\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003ePremium finish\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDurable construction\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDistinctive engine bay appearance\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eComplements air-cooled\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePorsche aesthetics\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMotorsport-inspired styling\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e50mm Silver Velocity Stacks\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThe oversized 50mm Velocity Stacks are specifically selected to complement the airflow requirements of the modified 4.0ltr engine.\u003c\/p\u003e\n\u003cp\u003eBenefits include:\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eIncreased airflow capacity\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eReduced intake restriction\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEnhanced cylinder filling\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eImproved throttle response\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOptimised high-performance breathing\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eClassic Porsche race-engine appearance\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThese larger stacks are ideally suited to engines built for maximum naturally aspirated performance.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eClassic Mesh \u0026amp; Foam Air Filters\u003cbr\u003e\u003c\/b\u003e\u003cbr\u003eThis package includes the Rennen ITG Classic Mesh \u0026amp; Foam Air Filter Set, designed specifically to fit directly onto the 50mm Velocity Stacks.\u003cbr\u003e\u003cspan\u003e\u003cbr\u003eBenefits include:\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eClassic motorsport appearance\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDirect fitment to Rennen Velocity Stacks\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eExcellent airflow characteristics\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEffective filtration against dust and debris\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLightweight construction\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWashable and reusable foam elements\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEnhanced engine bay aesthetics\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSuitable for road and performance applications\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe exposed mesh design perfectly complements the period-inspired appearance of the air-cooled flat-six while providing essential engine protection.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMechanical Throttle Linkage\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThis kit includes the traditional mechanical throttle linkage system preferred by many Porsche enthusiasts.\u003c\/p\u003e\n\u003cp\u003eBenefits include:\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eDirect throttle feel\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eImmediate driver feedback\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eProven reliability\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAuthentic air-cooled character\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMotorsport-style operation\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe mechanical linkage enhances the tactile and engaging nature of the ITB driving experience.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWhy Choose the Rennen by JSR ITB System?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThe Rennen by JSR system has been developed specifically for Porsche performance applications and engineered to maximise the potential of naturally aspirated air-cooled engines.\u003c\/p\u003e\n\u003cp\u003eBenefits include:\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eExceptional throttle response\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIncreased airflow capacity\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eImproved engine breathing\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEnhanced induction acoustics\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eGreater power potential\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePorsche-specific engineering\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePremium component quality\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eStunning engine bay presentation\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eIt represents one of the most desirable induction upgrades available for a modified Porsche 964.\u003c\/p\u003e","brand":"Rennen Plus","offers":[{"title":"Default Title","offer_id":53625056395543,"sku":null,"price":0.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0975\/6226\/3831\/files\/JSR54_1_a82499bb-a271-409d-99d2-1eb8be2db17d.webp?v=1783319311","url":"https:\/\/rennenplus.com.au\/products\/roller-barrel-itb-upgrade-set-for-3-stud-manifold-porsche-964-4-0ltr-1","provider":"Rennen Plus","version":"1.0","type":"link"}