BRS-ENGINEERING

Z-Upgrade 4.0b for Vcore 4.0/4.1 HARDWARE ONLY

€149,00 EUR

~~€159,00 EUR~~ €149,00 EUR

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Vcore size 300 400 500

Ballscrew type 1204 without ballscrews set 1204 with ballscrews set HEAVY DUTY 1605 without ballscrews set HEAVY DUTY 1605 with ballscrews set

450+ happy builds 🇫🇷 Made in France

Z-Upgrade 4.0b — Ballscrew Z system for Vcore 4.0 / 4.1 HARDWARE ONLY

Complete drop-in overhaul replacing the stock trapezoidal Z with precision C7 ballscrews — zero wobble, maintenance-free, built for production use since 2021.

🛡️ Lifetime warranty on printed parts

👥 500+ users since 2021

📦 3–5 days dispatch after manufacture · DDP for US

Why upgrade

Your stock Z is the bottleneck. A ballscrew system fixes it permanently.

Trapezoidal lead screws wear out, drift over time, and require regular re-tramming. The Z-Upgrade replaces them entirely with C7-grade ballscrews — the same class used in CNC machines — paired with a 60:20 motor reduction for extremely high holding torque and ultra-precise layer stepping.

🎯

Perfect layer consistency

Repeatability a lead screw simply can't match over time

🔧

Maintenance-free

Light lube once a year — no re-tramming, no wobble drift

⚡

Faster tilt + mesh

Higher Z acceleration without ball escape risk

🏭

Production-grade

Proven on heavy custom beds & 300→1000mm frames

Ballscrew vs. lead screw

Feature	Z-Upgrade (ballscrew)	Stock lead screw
Layer repeatability	Excellent & consistent over time	Drifts with wear
Z wobble	None — WobbleX integrated	Exists and Increases over time
Flew on load	None — Ballscrew stiffness	Forbid high Z or heavy bed
Maintenance	Annual light lubrication only	Regular re-tramming needed
Motor holding torque	Very high (60:20 reduction)	Standard
Full Z print volume	100% preserved	—

What's new in v4.0 vs. previous versions

↓Parts count reduced from 265+ to under 175 — harmonized hardware, fewer screw types

⚡Direct bolt-in upgrade — no full-disassembly of the printer required

↺BK bearing replaced by FK with angular contact bearing for better axial load handling

〜WobbleX natively integrated — denser arm design for increased rigidity

⚙60:20 motor reduction — high holding torque even when steppers are idle

≡Available in 1204 standard and 1605 heavy-duty ballscrew variants

▪Optional 5mm steel rod arm reinforcement for extreme or oversized builds

✦No supports needed on printed parts — redesigned for simplified DIY assembly

Z-Upgrade 4.0 for Vcore 4.0/4.1 - BRS-ENGINEERING

Spring Guard — included in every kit

🔒 Upgraded spring guard

Prevents balls from escaping when lifting the bed or PEI
Allows higher Z acceleration without risk during tilt or mesh calibration
No impact on anti-wobble performance
Simplified design for easier assembly than previous versions

Kit contents & configurations

300 mm 400 mm 500 mm 1204 standard 1605 heavy duty

📦 HARDWARE KIT only, printed part to DIY

3× belts + GT2-60T pulleys (bore 8 or 10 mm) + GT2-20T pinions

3× WobbleX WS12 or WS16 anti-wobble couplers

3× spring guards systems + top retainers bearings

All mounting screws included

1204 kits: 3× SFU1204 C7 ballscrews with FK10 angular contact bearings

1605 kits: 3× SFU1605 C7 ballscrews with FK12 angular contact bearings

BRS-ENGINEERING is the sole authorized distributor.

Compatibility

Vcore 4.0 and 4.1 only — CoreXY and Hybrid CoreXY.
Fits within the exact stock Z volume → fully compatible with IDEX and VAOC.
Only modification required: enlarge the 3 mm holes on the bottom plates to 4 mm.

Resources

📄 Assembly manual (PDF) 📊 BOM spreadsheet 🧊 STEP / STL on Printables

License: CC-SA-BY-NC 4.0 · Credits: RatRig for the Vcore 4.0/4.1 design · @MirageC / EVOMOTO for the WobbleX anti-wobble design.
BRS-ENGINEERING is the only authorized distributor of this product