SKU: 20211361452

Bondtech Prusa I3 MK3S Extruder Upgrade Kit EXT-KIT-68

Sale price$135.90 Regular price$151.00
Save 10%

Pay in installments of $37.75 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 31 - Aug 5

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Bondtech Prusa I3 MK3S Extruder Upgrade Kit EXT-KIT-68Looking for a Bondtech MK3S Extruder Upgrade Kit in Australia? This is the latest generation Bondtech upgrade for the popular Prusa I3 MK3S, with an optimized design achieved with the help of the community. This kit contains the necessary parts to convert your current extruder to our own popular design based upon our BMG (Bondtech Mini Geared) extruder with 3: 1 gearing ratio for better precision and resolution together with optimized geometry for the

Looking for a Bondtech MK3S Extruder Upgrade Kit in Australia?

This is the latest generation Bondtech upgrade for the popular Prusa I3 MK3S, with an optimized design achieved with the help of the community.

This kit contains the necessary parts to convert your current extruder to our own popular design based upon our BMG (Bondtech Mini Geared) extruder with 3:1 gearing ratio for better precision and resolution together with optimized geometry for the heatsink cooling and professional SLS 3D printed housing.
It is also compatible with the MK2.5S model.

LIGHTWEIGHT BMG (BONDTECH MINI GEARED)

With this version we also lower the moving weight to reduce ghosting and vibrations or to allow increasing the printing speed. 15% of weight saving was achieved.

PRODUCT MAIN FEATURES

This extruder upgrade kit is for the Prusa i3 MK3S, or other Prusa i3 models upgraded to MK3S.
These are its main features:

  • Adapted to fit Prusa’s new filament sensor;
  • Includes one Bondtech’s BMG extruder with 3:1 gearing ratio;
  • Optimized geometry for heat-sink cooling;
  • Less moving weight to reduce vibration and ghosting;
  • Professional SLS 3D printed housing.

    ADDRESSING 3D PRINTING ISSUES

    The enhanced housing design improves cooling and decreases heat creeping issues that all metal hotends have when printing with PLA. This small enhancement will avoid many clogs.
    The increased push force will drastically reduce slipping, shredding and deformation of the filament avoiding most of the common filament 3D printing issues that start with under and over extrusion.

    UPDATING THE FIRMWARE

    To use this upgrade in the MK3S, the E-steps needs to be updated to 830, as it uses 32-bit micro-stepping. Use this file instead.

    COMMUNITY INVOLVEMENT

    This is a co-development work with awesome guys in the Prusa Community like Chris Warkocki, Grégorie Saunier (Bear Upgrades), Olof Ogland, Erik Bjorgan, Josh Jones, Kyle Wiehe, Marc Evertz, Matt Harrison, Ocie Ward, Sando Bendig, Vecko Kojchevski (Vecko Extruder), Steven Mölby, and Yuri Delia that have provided excellent feedback and suggestions of how to develop the “perfect” extruder setup for the Prusa series printer. A lot of work has been put in this project and we tried to listen to all the inputs in order to find a solution that can be the best fit to the Prusa I3 MK3S.

     

    STEPPER MOTOR

    Lightweight 25 mm pancake stepper with 18 N/m torque.
    Max Input Current : 0.8A
    Max chamber working temperature: 80℃

    Weight Reduction:
    343,2g of parts coming out and 291,5g of parts coming in. A 51g (15%) weight saving.

    CONTENTS OF THE  X-Carriage KIT includes:

    • X-Carriage Front
    • X-Carriage Rear
    • 5x M3x10 Screws
    • 5x M3 square nut
    • 1x M3 nut

    Browse more

      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: 20211361452

      Discover Niche Categories That Outsell

      Top-Converting Item to Boost Your Average Order

      4.9 ★★★★★
      Based on 12 reviews
      Sort
      Highest Rating
      Newest First
      Oldest First
      Product Reviews
      A
      Verified Purchase
      Andchelle
      Birmingham, US
      ★★★★★ 5
      Best sub paper!
      Size: 8.5"x11"
      This is actually my second box of this paper I purchased. I use it that much! I like it that much! It works easily through my Epson 2850. The sub ink transfers to this paper with vibrant colors before pressing. I like the ASub print on the back to help me load the paper correctly in my printer. The ink does not bleed through the paper. I like that this paper comes in a plastic bag and in a box. This is helpful to keep the moisture out of the paper. The paper is durable as I try to manipulate on my substrate.
      WAS THIS REVIEW HELPFUL?YesReportShare
      Reviewed in the United States on January 12, 2024
      A
      Verified Purchase
      Amazon Customer
      Battle Creek, US
      ★★★★★ 5
      Works
      Size: 8.5"x11"
      Crisp transfer and doesn't jam my printer, win, win.
      WAS THIS REVIEW HELPFUL?YesReportShare
      Reviewed in the United States on December 28, 2025
      M
      Verified Purchase
      Mary Holmes
      Massapequa, US
      ★★★★★ 4
      Nice pp
      Size: 8.5"x11"
      Works good but kind of expensive
      WAS THIS REVIEW HELPFUL?YesReportShare
      Reviewed in the United States on April 23, 2026
      F
      Verified Purchase
      funnygirl
      Bozeman, US
      ★★★★★ 5
      Good choice in sublimation paper!
      Size: 8.5"x14"
      Good printer compatibility with my Epson printer. Very smooth. No jamming in my printer. I use a lot of of sublimation paper lots of projects going on. Need to def to stock up
      WAS THIS REVIEW HELPFUL?YesReportShare
      Reviewed in the United States on February 12, 2026
      G
      Verified Purchase
      Glenda Breland
      Alexandria, US
      ★★★★★ 5
      Vibrant Results and Great Value!
      Size: 13"*19", Color: 150 sheets
      HTVRONT Sublimation Paper 13x19 inches – 150 Sheets Review I recently purchased the HTVRONT Sublimation Paper (13x19 inches, 150 sheets, 120g) and I’m genuinely impressed with the results! As someone who does a lot of sublimation printing for both personal and small business projects, I found this paper to be a fantastic choice. Pros: Excellent Print Quality: The colors transfer beautifully and vibrantly onto my blanks. Images come out crisp and true to the original design. Generous Size: The 13x19 inch sheets are perfect for larger projects like T-shirts, tote bags, and even custom pillowcases. It’s great not having to piece together smaller sheets. Easy to Use: The paper feeds smoothly through my inkjet printer with no jams or smudging. Instructions were clear, making the process straightforward even for beginners. Consistent Results: Every sheet in the pack performed consistently, with no noticeable defects or wasted paper. Value for Money: With 150 sheets in the pack, it’s a great deal for the price, especially for anyone who does frequent sublimation work. Cons: Requires Sublimation Ink: Just a reminder that you’ll need sublimation ink for best results (not regular inkjet ink). Storage: The large size means you’ll need a bit of space to store the pack, but that’s a minor issue. Overall: I highly recommend the HTVRONT Sublimation Paper for anyone looking for reliable, high-quality results. It’s perfect for both hobbyists and small business owners. I’ll definitely be purchasing again!
      WAS THIS REVIEW HELPFUL?YesReportShare
      Reviewed in the United States on August 25, 2025

      recommand products