{"product_id":"rabropar-3-4-dd-x-3-4-dd-steering-u-joint-black-powder-coated-compact-3-1-4-length-35-limit","title":"RABROPAR 3\/4\" DD x 3\/4\" DD Steering U-Joint Black Powder-Coated — Compact 3-1\/4\" Length, 35° Limit","description":"\u003cp\u003e\u003cstrong\u003eRABROPAR's 3\/4\" DD x 3\/4\" DD powder-coated universal steering U-joint is a compact, corrosion-resistant single-shaft coupling designed to transmit steering input between shafts with a 35° working angle limit.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis steering U-joint couples two 3\/4\" Double-D shafts without splines and delivers reliable motion transfer in tight steering linkages. Its black powder-coat finish improves durability and resists surface wear, while the compact footprint (3-1\/4\" overall length, 1-5\/8\" outside diameter) makes it suitable for custom steering applications, go-karts, small vehicles, and machinery requiring precise shaft alignment.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this U-joint connect to my steering shafts?\u003c\/h3\u003e\n\u003cp\u003eThe RABROPAR unit uses Double-D (DD) connections on both ends, so it slips onto 3\/4\" DD shafts and locks with the supplied set screws for a positive drive. Because it has no splines, alignment is achieved by the DD flat and tightened screws, creating a simple, backlash-minimizing joint.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits 3\/4\" Double-D shafts at both ends\u003c\/li\u003e\n  \u003cli\u003eTwo set screws per end secure the connection\u003c\/li\u003e\n  \u003cli\u003eNo splines—rely on DD flats and clamps for torque transfer\u003c\/li\u003e\n  \u003cli\u003eCompact 3-1\/4\" overall length for tight assemblies\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat performance limits should I keep in mind?\u003c\/h3\u003e\n\u003cp\u003eDesign limits are a 35° maximum working angle and a maximum operating speed of 4000 rpm. Staying within those parameters prevents accelerated wear and maintains consistent steering feel; use a larger or higher-duty joint if your application demands greater angle or speed.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMaximum working angle: 35°\u003c\/li\u003e\n  \u003cli\u003eMaximum recommended speed: 4000 rpm\u003c\/li\u003e\n  \u003cli\u003eDesigned for steering torque, not heavy industrial loads\u003c\/li\u003e\n  \u003cli\u003eCheck shaft alignment to reduce side loads and vibration\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the physical dimensions and finish details?\u003c\/h3\u003e\n\u003cp\u003eThe coupling measures 3-1\/4\" overall with a 1-5\/8\" outside diameter, providing a small footprint while maintaining adequate material strength. Its black powder-coated exterior improves corrosion resistance and provides a consistent appearance in open or exposed steering installations.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOverall length: 3-1\/4\"\u003c\/li\u003e\n  \u003cli\u003eOutside diameter: 1-5\/8\"\u003c\/li\u003e\n  \u003cli\u003eFinish: durable black powder coat\u003c\/li\u003e\n  \u003cli\u003eMaterial: metal coupling engineered for steering use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: this RABROPAR universal steering shaft is aimed at builders, restorers, and DIY mechanics who need a compact, reliable DD-to-DD steering coupling for low- to medium-speed applications. If you run 3\/4\" Double-D steering shafts and require a neat, powder-coated joint with set-screw retention and a 35° angular capacity, this part offers a straightforward, cost-effective solution. For extreme angles, very high RPMs, or heavy industrial torque, consider a larger or splined universal joint designed for those conditions.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this fit 3\/4\" round shafts?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. This U-joint fits 3\/4\" Double-D (DD) shafts only; round shafts require a different coupling or adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use it above 4000 rpm?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Not recommended. The maximum advised operating speed is 4000 rpm to avoid premature wear or failure.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"RABROPAR","offers":[{"title":"Default Title","offer_id":48086387228830,"sku":"B0C4H5RP1Y","price":42.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/rabropar-front-facing-product-shot.jpg?v=1785897163","url":"https:\/\/northtrailauto.ca\/products\/rabropar-3-4-dd-x-3-4-dd-steering-u-joint-black-powder-coated-compact-3-1-4-length-35-limit","provider":"North Trail Auto","version":"1.0","type":"link"}