SKU: 91588916636

Rat Rig V-Core 3 Upgrade Kit (v3.0 to v3.1)

Sale price$137.70 Regular price$153.00
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Ships within 48 hours · Estimated delivery Jul 11 - Jul 16

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Description

Rat Rig V-Core 3 Upgrade Kit (v3.0 to v3.1)Are you looking to buy a Rat Rig V Core 3 Upgrade Kit (v3. 0 to v3. 1) in Australia? STRONGER. SMOOTHER. EASIER. THE NEW V CORE 3. 1 IS HERE! BETTER THAN EVER. After over a year of production and thousands of units delivered to customers worldwide, we can say we learned a lot! Now, we're bringing all those lessons to the newest iteration of the V Core: Version 3. 1! More robust than ever, much easier to put together, and with little polishes all over

Are you looking to buy a Rat Rig  V-Core 3 Upgrade Kit (v3.0 to v3.1) in Australia?

STRONGER. SMOOTHER. EASIER. THE NEW V-CORE 3.1 IS HERE!

 

 

BETTER THAN EVER.

After over a year of production and thousands of units delivered to customers worldwide, we can say we learned a lot! Now, we're bringing all those lessons to the newest iteration of the V-Core: Version 3.1! More robust than ever, much easier to put together, and with little polishes all over the design.

 
 

EASIER BUILD

    • Reverse frame build makes it much easier to get the frame square where it matters the most. Build from the top down with a flat XY top section, eliminating skew and bed mesh problems later

 

    • No more Z alignment, plug & play installation

 

  • New build manual
 

MORE ROBUST KINEMATICS

New XY idlers with much bigger bearings. Smoother, stronger and more long lasting.

 

MORE TOLERANT DESIGN

The completely redesigned Z axis with decouplers makes the machine far less sensitive to part issues and builder errors

 

KIT CONTENTS

The base kit includes all mechanical parts to perform the upgrade, including fasteners for the EVA 3 assemblies supported by Rat Rig (Extruders: Orbiter 2, LGX, LGX Lite / Hot-ends: Rapido, Mosquito, Mosquito Magnum). The only part that is dependent on machine size is the belt, which we ship in a length long enough for the largest machine size.

If you purchase the Printed Part Set, it will include all essential V-Core 3.1 Printed Parts (some cable management parts are not included), including EVA 3 Parts to mount your extruder and hot-end selection, along with the new fan duct for the new 4028 Fan.

TUTORIAL: Connecting a 4028 Fan

CLICK HERE TO ACCESS THE UPGRADE DOCUMENTATION

 

NEW SIZE 200MM

 

NEW IDLERS (STACKS) ON ALL POSITIONS

 

NEW XY JOINERS AND XY JOINER PLATES

 

NEW CUSTOM BI-MATERIAL DECOUPLERS

 

NEW COUPLERS

 

NEW Z ARMS WITH IMPROVED POM NUT POSITION

 

NEW LOCKED POSITION MOTOR MOUNTS

 

NEW TOP Z LEADSCREW CONSTRAINTS

 

NEW LINEAR RAIL POSITION FOR FRONT ZS ALLOWING FOR LESS OBSTRUCTED FRONT ACCESS TO THE PRINTER

 

NEW POST INSTALL BOTTOM PANEL

 

NEW ELECTRONICS PANEL DESIGN (DXF FILES AVAILABLE FOR SINGLE PIECE OR 4 PIECE SPLIT PANEL)

 

EVA 3.0

 

NEW COOLING: SHIPPING WITH 4028 FANS FOR EXTREME COOLING!

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Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 91588916636

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Maegan Fresonke
Fort Morgan, US
★★★★★ 4
Great find!
Size: 34DD, Color: Beige
Great fit, very comfortable. The cups are double lined which I wasn’t expecting but I really like it. The straps are also very comfortable.
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Reviewed in the United States on December 27, 2025
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Amy Rau-Simpson
Massapequa, US
★★★★★ 5
Buy it
Size: 36E, Color: Deep Ocean Blue
36 DDD. Beautiful bra, super soft! Underwire is comfortable, wider straps don't dig in to my shoulders & the support is fantastic. Better than more popular name brands that cost $$$. Will order more.
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Heather
Battle Creek, US
★★★★★ 5
WONDERFUL 😍
Size: 36E, Color: Gentle Rose
I think I finally found the perfect bra! It fits more like a minimizer and that wasn’t really what I was looking for but it’s an excellent quality and actually comfortable to wear all day. And that is really saying something b/c I’m a size 36 DDD!! I love this company
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Reviewed in the United States on January 21, 2026
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Marylou B.
Omaha, US
★★★★★ 5
Great bra
Size: 44DD, Color: Deep Ocean Blue
This bra is amazing, great material great fit true to size fit , super comfortable . I will definitely buy more of these in multiple colors. Thank you very much for a great bra.
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Reviewed in the United States on January 31, 2026
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Amy
Alexandria, US
★★★★★ 3
Stretches out fast
Size: 36G, Color: Beige
When I first tried it on, I did love it. I ordered a 36G. But I immediately noticed that I couldn’t make the straps any tighter and within one day it was way too loose. It just wasn’t giving that well made feel overall.
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Reviewed in the United States on December 25, 2025

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