{"title":"Engine Parts","description":"","products":[{"product_id":"r1-bike-carbs-velocity-stacks-high-temperature-asa-set-of-4","title":"R1 Bike Carbs Velocity Stacks - High-Temperature ASA, Set of 4","description":"\u003cp\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e:\u003cbr\u003eBoost the performance and aesthetics of your carburetor setup with this set of four high-quality velocity stacks. Printed in heat-resistant ASA material, these velocity stacks are designed to handle high temperatures, making them a durable choice for both street and performance builds. They are easy to install, featuring threaded inserts and set screws to ensure a secure fit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSet of 4 velocity stacks for R1 carburetors\u003c\/li\u003e\n\u003cli\u003eMade from high-temperature-resistant ASA material for durability\u003c\/li\u003e\n\u003cli\u003eThreaded inserts and set screws included for secure attachment\u003c\/li\u003e\n\u003cli\u003eProvides smoother airflow for improved performance\u003c\/li\u003e\n\u003cli\u003ePrecision fit for a professional installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote\u003c\/strong\u003e:\u003cbr\u003eThese velocity stacks are sold as a set of four and are designed for easy installation, adding both performance and style to your carburetor setup.\u003c\/p\u003e","brand":"RetroMotorWorks","offers":[{"title":"Default Title","offer_id":49370061046107,"sku":null,"price":55.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/9358\/6779\/files\/IMG_7835.jpg?v=1730396491"},{"product_id":"dcoe-carburetor-velocity-stacks-abs-printed-50mm-length-set-of-4","title":"DCOE Carburetor Velocity Stacks - ABS Printed, 50mm Length, Set of 4","description":"\u003cp data-start=\"85\" data-end=\"501\"\u003e\u003cstrong data-start=\"85\" data-end=\"100\"\u003eDescription\u003c\/strong\u003e:\u003cbr data-start=\"101\" data-end=\"104\"\u003eImprove airflow and performance with this set of four DCOE velocity stacks, designed with internal flow straightening vanes to reduce turbulence and promote smoother intake flow. Printed in durable ABS plastic, these trumpets offer excellent heat resistance and strength, making them ideal for demanding engine bays. Available in both 40mm and 45mm versions to suit a variety of DCOE carburetor setups.\u003c\/p\u003e\n\u003cp data-start=\"503\" data-end=\"518\"\u003e\u003cstrong data-start=\"503\" data-end=\"515\"\u003eFeatures\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul data-start=\"519\" data-end=\"801\"\u003e\n\u003cli data-start=\"519\" data-end=\"579\"\u003e\n\u003cp data-start=\"521\" data-end=\"579\"\u003eDesigned for DCOE carburetors (choose 40mm, 45mm and 48mm size)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"580\" data-end=\"632\"\u003e\n\u003cp data-start=\"582\" data-end=\"632\"\u003e50mm length for balanced airflow and performance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"633\" data-end=\"705\"\u003e\n\u003cp data-start=\"635\" data-end=\"705\"\u003eInternal air-straightening vanes reduce turbulence for improved flow\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"706\" data-end=\"778\"\u003e\n\u003cp data-start=\"708\" data-end=\"778\"\u003eStrong and heat-resistant ABS plastic construction \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"779\" data-end=\"801\"\u003e\n\u003cp data-start=\"781\" data-end=\"801\"\u003eSold as a set of 4\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"803\" data-end=\"1007\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\u003cstrong data-start=\"803\" data-end=\"811\"\u003eNote\u003c\/strong\u003e:\u003cbr data-start=\"812\" data-end=\"815\"\u003eThese velocity stacks are designed for performance-focused builds, combining functionality with a clean, purpose-built look. Select the correct size at checkout to match your carburetor setup.\u003c\/p\u003e","brand":"RetroMotorWorks","offers":[{"title":"DCOE 40","offer_id":50956659622235,"sku":null,"price":65.0,"currency_code":"EUR","in_stock":true},{"title":"DCOE 45","offer_id":50956659655003,"sku":null,"price":65.0,"currency_code":"EUR","in_stock":true},{"title":"DCOE 48","offer_id":51750022250843,"sku":null,"price":65.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/9358\/6779\/files\/iso.201.png?v=1752083257"},{"product_id":"peugeot-205-intake-manifold-r6-bike-carbs-3d-printable-stl-for-36mm-bike-carbs-pa-cf-ready-digital-download","title":"Peugeot 205 GTI Intake Manifold R6 Bike carbs | 3D Printable STL for 36mm Bike Carbs | PA-CF Ready | Digital Download","description":"\u003cp\u003eUpgrade your Peugeot 205 GTI with this custom-designed 3D printable intake manifold, engineered for 36mm R6 bike carb conversion. The model features optimized airflow geometry and integrated 1\/8” NPT threaded vacuum ports for enhanced fueling and tuning options. Designed for printing in PA-CF (carbon fiber nylon) filament, it is anneal-ready for improved strength and thermal resistance in harsh engine bay conditions. STL file download is for personal use—perfect for performance projects, carb swaps, or classic car restorations. Support for other vehicle platforms is coming soon!\u003c\/p\u003e","brand":"RetroMotorWorks","offers":[{"title":"Default Title","offer_id":51452934455643,"sku":null,"price":35.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/9358\/6779\/files\/generated-image_6.png?v=1759504566"},{"product_id":"weber-dgv-dgav-carburetor-velocity-stack-trumpet-constant-radius","title":"Weber DGV-DGAV carburetor velocity stack, trumpet, constant radius","description":"\u003cp data-start=\"168\" data-end=\"455\"\u003eEnhance the performance and aesthetics of your Weber carburetor setup with this \u003cstrong data-start=\"248\" data-end=\"282\"\u003ecustom-designed velocity stack\u003c\/strong\u003e.\u003cbr data-start=\"283\" data-end=\"286\"\u003eEngineered for optimal airflow, the \u003cstrong data-start=\"322\" data-end=\"341\"\u003econstant radius\u003c\/strong\u003e profile provides smoother air transition into the carburetor, improving throttle response and engine breathing.\u003c\/p\u003e\n\u003cp data-start=\"457\" data-end=\"684\"\u003eEach piece is \u003cstrong data-start=\"471\" data-end=\"564\"\u003eprecision 3D printed in high-temperature resistant PETG-CF (carbon fiber–reinforced PETG)\u003c\/strong\u003e, ensuring excellent strength, heat resistance, and dimensional stability – ideal for demanding engine bay conditions.\u003c\/p\u003e\n\u003cp data-start=\"686\" data-end=\"701\"\u003e\u003cstrong data-start=\"686\" data-end=\"699\"\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"702\" data-end=\"1024\"\u003e\n\u003cli data-start=\"702\" data-end=\"743\"\u003e\n\u003cp data-start=\"704\" data-end=\"743\"\u003eFits \u003cstrong data-start=\"709\" data-end=\"741\"\u003eWeber DGV \/ DGAV carburetors\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"744\" data-end=\"811\"\u003e\n\u003cp data-start=\"746\" data-end=\"811\"\u003e\u003cstrong data-start=\"746\" data-end=\"765\"\u003eConstant radius\u003c\/strong\u003e design for improved airflow and performance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"812\" data-end=\"870\"\u003e\n\u003cp data-start=\"814\" data-end=\"870\"\u003e\u003cstrong data-start=\"814\" data-end=\"831\"\u003eCustom design\u003c\/strong\u003e – lightweight yet rigid construction\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"871\" data-end=\"970\"\u003e\n\u003cp data-start=\"873\" data-end=\"970\"\u003ePrinted in \u003cstrong data-start=\"884\" data-end=\"895\"\u003ePETG-CF\u003c\/strong\u003e (Carbon Fiber Reinforced PETG) for \u003cstrong data-start=\"931\" data-end=\"968\"\u003ehigh heat and chemical resistance\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"971\" data-end=\"1024\"\u003e\n\u003cp data-start=\"973\" data-end=\"1024\"\u003e\u003cstrong data-start=\"973\" data-end=\"997\"\u003eDurable matte finish\u003c\/strong\u003e with a professional look\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1026\" data-end=\"1044\"\u003e\u003cstrong data-start=\"1026\" data-end=\"1042\"\u003ePerfect for:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1045\" data-end=\"1154\"\u003e\n\u003cli data-start=\"1045\" data-end=\"1078\"\u003e\n\u003cp data-start=\"1047\" data-end=\"1078\"\u003ePerformance carburetor setups\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1079\" data-end=\"1103\"\u003e\n\u003cp data-start=\"1081\" data-end=\"1103\"\u003eCustom engine builds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1104\" data-end=\"1154\"\u003e\n\u003cp data-start=\"1106\" data-end=\"1154\"\u003eClassic car restorations and race applications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RetroMotorWorks","offers":[{"title":"Default Title","offer_id":51550355718491,"sku":null,"price":65.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/9358\/6779\/files\/rn-image_picker_lib_temp_e4b89243-f121-46fb-9ee8-582d1d6f90e0.png?v=1760673857"},{"product_id":"dcoe-carburetor-velocity-stacks-abs-printed-80mm-length-set-of-4","title":"DCOE Carburetor Velocity Stacks - ABS Printed, 80mm Length, Set of 4","description":"\u003cp data-end=\"501\" data-start=\"85\"\u003e\u003cstrong data-end=\"100\" data-start=\"85\"\u003eDescription\u003c\/strong\u003e:\u003cbr data-end=\"104\" data-start=\"101\"\u003eImprove airflow and performance with this set of four DCOE velocity stacks. Printed in durable ABS plastic, these trumpets offer excellent heat resistance and strength, making them ideal for demanding engine bays. Available in 40mm, 45mm and 48mm versions to suit a variety of DCOE carburetor setups.\u003c\/p\u003e\n\u003cp data-end=\"518\" data-start=\"503\"\u003e\u003cstrong data-end=\"515\" data-start=\"503\"\u003eFeatures\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul data-end=\"801\" data-start=\"519\"\u003e\n\u003cli data-end=\"579\" data-start=\"519\"\u003e\n\u003cp data-end=\"579\" data-start=\"521\"\u003eDesigned for DCOE carburetors (choose 40mm, 45mm and 48mm size)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"632\" data-start=\"580\"\u003e\n\u003cp data-end=\"632\" data-start=\"582\"\u003e80mm length for balanced airflow and performance\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"778\" data-start=\"706\"\u003e\n\u003cp data-end=\"778\" data-start=\"708\"\u003eStrong and heat-resistant ABS plastic construction \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"801\" data-start=\"779\"\u003e\n\u003cp data-end=\"801\" data-start=\"781\"\u003eSold as a set of 4\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-is-only-node=\"\" data-is-last-node=\"\" data-end=\"1007\" data-start=\"803\"\u003e\u003cstrong data-end=\"811\" data-start=\"803\"\u003eNote\u003c\/strong\u003e:\u003cbr data-end=\"815\" data-start=\"812\"\u003eThese velocity stacks are designed for performance-focused builds, combining functionality with a clean, purpose-built look. Select the correct size at checkout to match your carburetor setup.\u003c\/p\u003e","brand":"RetroMotorWorks","offers":[{"title":"DCOE 40","offer_id":51750022414683,"sku":null,"price":70.0,"currency_code":"EUR","in_stock":true},{"title":"DCOE 45","offer_id":51750022447451,"sku":null,"price":70.0,"currency_code":"EUR","in_stock":true},{"title":"DCOE 48","offer_id":51750022480219,"sku":null,"price":70.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/9358\/6779\/files\/untitled.75_921c89e7-3e64-4f79-93f0-7ed2ca49260a.jpg?v=1763282969"},{"product_id":"dcoe-carburetor-velocity-stack-set-ram-pipe-design","title":"DCOE Carburetor Velocity Stack set - ram pipe design","description":"\u003ch3 class=\"MsoNormal\"\u003e\u003cstrong\u003eDCOE Carburetor Velocity Stacks – Technical Performance Set (4 pcs, PA-CF)\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"MsoNormal\"\u003eThese velocity stacks are engineered for DCOE-type carburetors and designed using the airflow and intake-tuning principles described in Performance Tuning in Theory \u0026amp;amp; Practice — Four-Strokes by A. Graham Bell.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThey provide optimized inlet geometry, improved flow efficiency, and allow you to tune the intake system to your engine’s torque and power needs.\u003c\/p\u003e\n\u003ch4 class=\"MsoNormal\"\u003eKey Technical Features\u003c\/h4\u003e\n\u003cp class=\"MsoNormal\"\u003ePrecision Bellmouth Geometry\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eEach stack uses a smooth, high-radius bellmouth to minimise entry turbulence, reduce boundary-layer separation, and improve volumetric efficiency—especially at high airflow demand.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eFunctional Length Options\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eAvailable in multiple diameter–length configurations so you can match the intake tract to your engine’s cam profile and target RPM range:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"MsoNormal\"\u003eLonger stacks (e.g., 76 mm) → stronger mid-range torque\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eMedium stacks (50 mm) → balanced power delivery\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eShorter stacks (38 mm) → improved high-RPM response\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"MsoNormal\"\u003eThis follows Bell’s tuning principle: total intake length directly influences the timing of pressure-wave harmonics that assist cylinder filling.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eAvailable Variants\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e(D = Carburetor throat diameter, L = Stack length)\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"MsoNormal\"\u003e40-38L\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e40-50L\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e40-76L\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e45-38L\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e45-50L\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e45-76L\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e48-38L\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e48-50L\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e48-76L\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e50-38L\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e50-50L\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e50-76L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eMaterial: PA-CF (Carbon-Fiber Nylon)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eEach set is printed in PA-CF, offering:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"MsoNormal\"\u003eHigh stiffness\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eHeat resistance\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eDimensional stability\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eExcellent surface finish\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"MsoNormal\"\u003eIdeal for high-vibration and under-bonnet environments\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThis makes the stacks suitable for both functional automotive use and performance prototyping.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eWhy These Stacks Work\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eBased on Bell’s four-stroke theory:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"MsoNormal\"\u003eA properly shaped bellmouth can reduce inlet losses by up to 20% compared to sharp-edge entries.\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eIntake length tuning allows you to shift torque characteristics without modifying the carburetor or manifold.\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003eClean airflow into the carburetor improves throttle response and cylinder filling across the rev range.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eWhat You Receive\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"MsoNormal\"\u003e1 full set of 4 velocity stacks\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003ePrinted in PA-CF carbon-fiber reinforced nylon - dark grey color\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RetroMotorWorks","offers":[{"title":"DCOE 40 - 38mm length","offer_id":51807334990171,"sku":null,"price":70.0,"currency_code":"EUR","in_stock":true},{"title":"DCOE 40 - 50mm length","offer_id":51807335022939,"sku":null,"price":80.0,"currency_code":"EUR","in_stock":true},{"title":"DCOE 40 - 76mm length","offer_id":51807335055707,"sku":null,"price":90.0,"currency_code":"EUR","in_stock":true},{"title":"DCOE 45 - 38mm length","offer_id":51807434211675,"sku":null,"price":70.0,"currency_code":"EUR","in_stock":true},{"title":"DCOE 45 - 50mm length","offer_id":51807434244443,"sku":null,"price":80.0,"currency_code":"EUR","in_stock":true},{"title":"DCOE 45 - 76mm length","offer_id":51807434277211,"sku":null,"price":90.0,"currency_code":"EUR","in_stock":true},{"title":"DCOE 48 - 38mm length","offer_id":51807434309979,"sku":null,"price":70.0,"currency_code":"EUR","in_stock":true},{"title":"DCOE 48 - 50mm length","offer_id":51807434342747,"sku":null,"price":80.0,"currency_code":"EUR","in_stock":true},{"title":"DCOE 48 - 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