The Double U-Bolt Mount Base gives you a permanent 1.5" ball attachment point on any round pipe or rail between 19mm and 31mm in diameter — motorcycle handlebars, push-bike bars, forklift cab rails, 4WD roll cages, boat grab rails, kayak side rails, scaffolding, even warehouse cage uprights. Two stainless steel U-bolts loop under the bar and clamp the marine-grade aluminium body down hard, so once it is installed it does not move.
The 1.5" (38mm) ball on top is the standard C-size used by RAM Mounts and the rest of the Outcamp Modular Mount System. Pair it with any C-size double socket arm and a C-size cradle — phone or tablet holder, GPS unit, fish-finder, action camera mount, or AMPS plate.
Key Features
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Marine-grade aluminium body: Powder-coat finished, sturdy and corrosion-resistant for outdoor and saltwater use.
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Double U-bolt clamping: Two 304 stainless steel U-bolts (4 contact points) lock the base solidly to round bars — no slipping, no rattling.
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1.5" (C-size) ball: RAM Mounts compatible. Pairs with any C-size arm and cradle in the Outcamp Modular Mount range.
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Wide bar range: Fits round bars 19mm to 31mm in diameter — covers most pushie / motorbike handlebars, kayak rails, boat grab rails, forklift cab tubing and 4WD roll cages.
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Multi-axis adjustment: Once paired with a double socket arm, the ball gives 360° horizontal rotation and 180° tilt for full pan and angle control.
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Industrial rubber ball: Sand-finish ball head holds tight in the socket arm without slipping.
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All-stainless hardware: Stainless U-bolts, nyloc nuts, washers and rubber thread covers — built for vibration and weather.
Specifications
- Ball size: 1.5" (38.1mm) — C-size, RAM Mounts compatible
- Clamp range: 19mm to 31mm round bar diameter (default style, no pad)
- Body: marine-grade aluminium, powder-coat finish
- U-bolts: 304 stainless steel, 1/4"-20 thread, 32.2mm inside width, 63.6mm length
- Hardware: 4 x stainless nyloc nuts, 4 x stainless washers, 4 x rubber thread covers
- Body footprint: approx. 63.5mm x 52.6mm
- Ball: industrial rubber, sand-finish non-slip
- Fits round bars only
What's in the Box
- 1 x Aluminium body with 1.5" ball (factory-fitted)
- 2 x 304 stainless steel U-bolts
- 4 x stainless steel nyloc nuts
- 4 x stainless steel washers
- 4 x rubber thread cap covers
Compatibility
The 1.5" ball is the standard C-size used by RAM Mounts and the Outcamp Modular Mount System. Pair this base with any C-size double socket arm and a C-size device holder — phone or tablet cradle, GPS holder, fish-finder cradle, AMPS plate, or a 1.5"-ball-to-1/4" camera adapter for GoPro / DJI Action / Insta360.
Where it works
- Motorcycle, e-bike and pushie handlebars
- Forklift cab rails and warehouse equipment tubing
- 4WD roll cages, snorkel uprights and bull-bar tube
- Kayak side rails and boat grab rails
- Caravan and camper trailer rails
- Scaffolding, workshop pipe and shop fittings
Part of the Outcamp Modular Mount System. Ships Australia-wide.
