2026 Econo-Max 20ft Enclosed Car Trailer – 12in Extra Height & Poly-Core Sides

The Econo-Max is Millennium’s no-frills build: a screwed poly-core exterior, spring axles and plywood lining rather than aluminium sheet and torsion suspension. What you get for the saving is 6.1 m of enclosed, lockable space with 305 mm of extra height — approximately 2.29 m inside.

It is the sensible option in our enclosed trailer range when the trailer is a tool rather than a showpiece: landscaping gear, market stalls, a bike collection, a project car that has not been painted yet.

Where the extra height goes

Ordering the 305 mm height upgrade takes the interior from a little over two metres to approximately 2.29 m. That is the difference between stooping and standing, and it is what lets you fit a tall van conversion, a lifted 4WD or a stack of shelving without fighting the roof bows.

Metric specification

• Model: 2026 Millennium Econo-Max enclosed car trailer
• Length: 6.1 m (20 ft)
• Interior height: approx. 2.29 m (includes 305 mm extra-height option)
• Axles: two 1,590 kg spring axles
• Exterior: 2.03 mm black screwed poly-core, V-nose front
• Frame: 152 mm tubular main frame, floor crossmembers at 406 mm centres, roof bows at 610 mm centres, wall posts at 406 mm centres
• Rear: ramp door with flap, beavertail
• Side door: 914 mm with barlock
• Lining: 10 mm plywood walls, 19 mm plywood floor
• Tie-downs: four floor rings
• Wheels: black mod wheels, with interior spare tyre mount and black mod spare
• Warranty: 5-year limited warranty as supplied by the manufacturer

Spring axles versus torsion

Leaf springs are cheaper to buy and cheaper to repair anywhere in the country, which is a real advantage a long way from a capital city. They ride harder than torsion axles and they will eventually sag, but for a trailer that does moderate kilometres they are entirely sensible. Browse the torsion-axle alternatives in the enclosed trailers category if ride quality matters more than purchase price.

Imported US-market stock and not assessed against Australian Design Rules. Any pick-up or collection arrangements described by the original US vendor do not apply — we deliver Australia-wide for a flat A$450. Confirm registration and roadworthiness requirements with your state transport authority before road use. For a heavier-duty haulage platform, see our container chassis and trailer range.