Bambu Lab AMS lite

Bambu Lab AMS lite Filament Hub

If you bought an A1 Combo or A1 mini Combo, the AMS lite Filament Hub is already on your printer — it's the small four-port block clipped to the top of the toolhead where all four PTFE tubes converge. Every colour change your printer makes passes through it, which is exactly why it's the part that eventually wears. Cracked port collets that won't hold a tube, a scored internal channel, or filament that snags on every swap are all signs it's time for a fresh one.

This is the genuine Bambu Lab replacement hub, not a printed copy. It drops straight into the factory mounting position with the two buckles included in the pack, so you're back to reliable four-colour printing in minutes rather than waiting weeks on an overseas parts order.

Why replace the hub

• Four filaments, one path. Four inlet ports take the PTFE tubes from the AMS lite; a single outlet feeds the extruder, so the printer can switch material automatically with no manual intervention.
• Low-friction internal channels. The moulded guides keep drag down during long multi-colour prints, where a single hub is doing hundreds of retractions and reloads.
• Fixes tubes that won't stay seated. A worn collet lets a PTFE tube creep out mid-print — the classic cause of "filament ran out" errors on a spool that's still full.
• Cheap insurance for a busy printer. Schools, makerspaces and small businesses running AMS lite daily are worth keeping a spare hub on the shelf for.
• Genuine part fitment. Correct port spacing, correct buckle geometry, correct height clearance on the toolhead.

What's in the box

• 1 × AMS lite Filament Hub
• 2 × Buckles for securing the hub to the toolhead

PTFE tubes are not included — reuse your existing tubes if they're in good condition, or replace them at the same time if the ends are worn or flared.

Compatibility

Designed for the AMS lite system as fitted to the Bambu Lab A1 and A1 mini. It works with any filament the AMS lite handles — PLA, PETG, TPU (95A and above) and PVA support material in 1.75 mm. Note that the AMS lite hub is a different part from the enclosed AMS / AMS 2 Pro hub used on the X1 and P1 series; those are not interchangeable.

Specifications

Who it's for

Any A1 or A1 mini Combo owner whose colour changes have started misbehaving, plus schools, makerspaces and print farms that want a spare on hand before a hub failure takes a machine offline. Installation is a five-minute job with no soldering and no firmware steps — unclip the old hub, transfer the PTFE tubes, clip the new one in.