Drawbar Custom Mount · Australian Made Weld It. Your Way. The iSi Weld-On Pivot Base is the starting point for a fully custom drawbar-mounted bike carrier on your caravan or trailer. It welds directly atop a fabricated StrongArm support post, while the support structure below is manufactured locally using widely available square steel tube. Your drawbar, your clearances, your layout. Custom Drawbar Solution DIY or Technician Install Standard Steel Tube Full iSi Compatibility How It Works The iSi Component Your Fabrication You purchase the precision-manufactured iSi pivot base. The support post and mounting structure below it are fabricated to your drawbar using standard steel tube available from any steel supplier. What iSi Provides Component Weld-On Pivot Base (precision manufactured, powder coated) Welds To The top of your fabricated StrongArm support post Compatible All iSi two and four bicycle carrier assemblies and expansion packs What You Fabricate Material 75mm x 75mm x 2.5mm or 65mm x 65mm x 3mm square steel tube Sourcing Available from any steel supplier or fabrication shop in Australia Installation Any competent trailer technician or confident DIYer with a welder Three Steps To A Custom Mount Fabricate. Weld. Ride. The process is straightforward. Fabricate a support post from standard steel tube, weld the iSi pivot base on top, and you're running a full iSi carrier system on your drawbar. 1 Fabricate The Post Measure your drawbar clearances around toolboxes, jerry cans and other drawbar-mounted accessories. Fabricate a support post from 75x75mm or 65x65mm square tube to suit your layout. 2 Weld The Pivot Base Weld the iSi Pivot Base directly atop the support post. The precision-manufactured interface ensures a clean, square connection that accepts the carrier beam without adjustment. 3 Drop In Your Carrier Install your iSi two or four bike carrier assembly onto the pivot base. The carrier pivots up and over for full drawbar access, and removes tool-free when you don't need it. Why Weld-On Tailored To Your Drawbar Every caravan drawbar is different. The Weld-On Pivot Base lets you position the carrier exactly where it needs to be, with the exact clearances your setup requires. Precision Positioning You choose where the carrier sits on the drawbar. Clear toolboxes, jerry can holders, spare wheels and any other drawbar-mounted accessories with exactly the clearance you need. Pivot Up and Over The carrier pivots up and over on the drawbar mount, providing unhindered access to the front boot, gas bottles and storage compartments. Operates loaded or empty. Standard Materials The support structure uses standard 75x75mm or 65x65mm square steel tube, available from any steel supplier. No proprietary extrusions, no specialty materials, no waiting on imports. See It In The Wild Real-World Custom Installs Hundreds of caravan owners have fabricated custom drawbar mounts using the iSi Weld-On Pivot Base. Here are a few to get you started. MDC Hybrid Caravan View customer install Jayco Expanda View customer install Supreme Caravan View customer install Prefer A Ready-To-Go Solution? If you'd rather skip the fabrication, check out our Bolt-On Drawbar Mounted Bike Racks which come complete with the StrongArm support post and U-bolt mounting hardware. No welding required. 100% Australian Steel Full iSi Compatibility Made In Melbourne 30 Day Returns Planning a custom drawbar mount? Send us your drawbar dimensions, clearance requirements and any photos of your setup. Our team can advise on post sizing, positioning and the right carrier assembly to pair with it. Speak to a Sales Engineer
