{"product_id":"retno-kellison-j4-roadster-reproduction-bodywork-fiberglass-race-car-body","title":"Retno Kellison J4 Roadster Reproduction Bodywork – Fiberglass Race Car Body","description":"\u003ch2\u003e\u003cspan\u003eRetno Kellison J4 Roadster Reproduction Bodywork – Fiberglass Race Car Body\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eBring your race car build back to the track with the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eRetno Kellison J4 Roadster Reproduction Bodywork\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, manufactured using a proven fiberglass layup schedule designed to provide a lightweight structure with added impact resistance and rigidity.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eDesigned for the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eKellison J4 Roadster\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, this reproduction bodywork features a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eone-piece body design\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e along with separate doors, door inner panels, front and rear trunk lids, a headrest, and a fuel access panel. It is well suited for restoration projects, replica builds, vintage racing, and performance applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eWhat's Included – Kellison J4 Roadster Bodywork\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis listing includes:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eOne-Piece Kellison J4 Roadster Body\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eRight Door\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eLeft Door\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eRight Door Inner Panel\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eLeft Door Inner Panel\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eRear Trunk Lid\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eFront Trunk Lid\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eHeadrest\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eFuel Access Panel \/ Flap\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-pm-slice=\"1 1 []\"\u003e\u003cspan\u003eMade-to-Order Product \u0026amp; Lead Time\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003ePlease Note:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e All bodywork is made to order. Please allow \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e10–14 business days\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e for your order to be completed. Production time may vary depending on the complexity of the order and any custom specifications requested. We appreciate your patience while we craft your bodywork to meet your needs.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eStandard Fiberglass Layup Schedule\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eOur standard race-car fiberglass construction uses a carefully layered combination of \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003egel coat, fiberglass mat, structural E-Glass cloth, and polyester or vinylester resin\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. Each layer serves a specific purpose in creating a strong, lightweight body panel suitable for racing and performance applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003e1st Layer – Gel Coat\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA gel-coat surface layer provides the foundation of the panel and helps create a consistent finished surface.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003e2nd Layer – 1.5 oz Fiberglass Mat\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eThe first fiberglass layer uses \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e1.5 oz fiberglass mat\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e combined with polyester or vinylester resin. This layer begins building the panel's initial thickness and structural foundation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003e3rd Layer – 2 oz Fiberglass Mat\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA second layer of \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e2 oz strand fiberglass mat\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is combined with polyester or vinylester resin to further increase the panel's strength and rigidity.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eFinal Layer – 6 oz E-Glass Structural Cloth\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eThe backing layer consists of \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e6 oz E-Glass cloth (60 sq.)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e combined with polyester or vinylester resin. This structural backing layer provides additional reinforcement and helps complete the standard race-car layup.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eReinforced Flat \u0026amp; Horizontal Panels\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eFor flat or horizontal panels where additional rigidity is required—such as the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003efront trunk lid, rear trunk lid, fuel access panel, and other large flat sections\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e—we can incorporate \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ehigh-density foam core or balsa strips\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e into the construction.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThese reinforcement methods help minimize panel flex without requiring additional external structural elements, keeping the overall design lightweight while improving rigidity.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eProfessional Finishing Process\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003ePeel ply is applied during the layup process and removed after curing\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e to help achieve a proper surface finish and prepare the part for subsequent finishing or installation.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eCustom Materials \u0026amp; Construction Available\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eNeed something beyond our standard fiberglass construction?\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eRetno offers additional material options upon request, including:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eCarbon Fiber\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eMatrix Fiber Mix\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eRetno Exclusive Barotex Fiber\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eMaterial selection and custom construction can be tailored to your specific application and performance requirements.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eCustom Bodywork Requests\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eBecause every race-car build can have different requirements, \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ecustom bodywork requests are welcome\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eFor custom dimensions, modifications, material upgrades, special layup schedules, or unique bodywork requirements, please submit your request through our \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eSOS (Specialty Order Shop)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e or our \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eCustom Order Bodywork Form\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eCustom materials, construction methods, and modifications may affect pricing and lead times.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eBuilt for the Track\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eWhether you're restoring a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eKellison J4 Roadster\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, replacing damaged bodywork, building a replica, or creating a vintage competition vehicle, the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eRetno Kellison J4 Roadster Reproduction Bodywork\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is designed with the needs of vintage racing and performance applications in mind.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCombining \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003elightweight construction, structural reinforcement, impact resistance, and race-ready design\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, this reproduction bodywork provides a strong foundation for your Kellison J4 Roadster restoration, replica, or race build.\u003c\/span\u003e\u003c\/p\u003e","brand":"retnoco","offers":[{"title":"Default Title","offer_id":53849013387428,"sku":null,"price":5800.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0444\/6745\/4116\/files\/American-Vintage-Special-Kellison-J3A-fiberglass-body-Devin-Edited.jpg?v=1792438416","url":"https:\/\/retnoco.com\/products\/retno-kellison-j4-roadster-reproduction-bodywork-fiberglass-race-car-body","provider":"retnoco","version":"1.0","type":"link"}