SKU: 68445867888

Bondtech Prusa i3 MK3S / MK2.5S Mosquito EXT-KIT-69

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Description

Bondtech Prusa i3 MK3S / MK2.5S Mosquito EXT-KIT-69Are you looking for a Bondtech Prusa MK3S Mosquito Upgrade in Australia? This Upgrade Kit does not include the gears (already supplied by Prusa). This Upgrade Kit requires extra parts to install (X Carriage Kit). You can buy it from us or you can download the STLs and 3D print them. Perfectly designed for the Slice Engineering Mosquito Mosquito Magnum Upgrade Your Extruder Upgrade your extruder to a Bondtech Mini Geared with higher gear ratio 3: 1

Are you looking for a Bondtech Prusa MK3S Mosquito Upgrade in Australia?

This Upgrade Kit does not include the gears (already supplied by Prusa).

This Upgrade Kit requires extra parts to install (X-Carriage Kit).
You can buy it from us or you can download the STLs and 3D print them.

 Perfectly designed for the Slice Engineering Mosquito/Mosquito Magnum

Upgrade Your Extruder

Upgrade your extruder to a Bondtech Mini Geared with higher gear ratio – 3:1 – that allows for extra push force and higher resolution.

Print Faster Or With Higher Quality

Use a lightweight extruder that will allow your 3D printer to print faster or to achieve better surface quality.

Reduce 3D Printing Issues

Decrease the risk of heat creep to avoid clogs and improve filament feeding to avoid slipping and deformation that cause under and over extrusion issues.

Upgrade kit With Optimized Design to fit Mosquito hotends

This is a Bondtech upgrade for the popular Prusa I3 MK3S and MK2.5S that will allow the use of the world-acclaimed Mosquito hotends.

Bondtech Extruder For Prusa i3 MK2.5S & MK3S

This kit contains only 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.

Product Main Features

This extruder upgrade presents the following main features:

  • Adapted to fit Prusa’s new filament sensor and Mosquito hotends;
  • 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 and 3 other key parts.

MK3S / MK3S Mosquito, What’s the difference?

This Upgrade Kit is mostly similar to the previous MK3S, with the main difference of having been designed to fit the Mosquito and Mosquito Magnum hotends.
Other differences come from the design changes that include:

  • An optimization of the cooling air channel to focus the airflow on the Mosquito’s heatsink. The channel is narrower.
  • This tighter space is also used to hold the hotend in place during nozzle changes, so the user can change the nozzle with a single hand.
  • The fan shroud was also redesigned to fit the Mosquito hotends.
  • We include in this kit a new part, the Mosquito hotend adapter, 3D printed with SLS.

Prusa’s Heater or Mosquito Heater, What should I use?

The Upgrade is compatible with the thermistor and 40w heater already supplied with the Prusa.
However, you also have the option of using Slice Engineering Mosquito thermistor and 50W heater.
We recommend the more efficient 50W heater for your Mosquito to reach a stable operating temperature faster.

  • If you have a Prusa i3 MK2.5S, buy the 12v Mosquito heater.
  • If you have a Prusa i3 MK3S, you should buy the 24v Mosquito heater.

Updating the Firmware

To use this upgrade in the MK2.5S / MK3S, the E-steps and Z_Max needs to be updated. Check out the latest version of our firmware here.
We are also supplying firmware versions compatible with the use of Mosquito’s thermistor.
If you are using this Mosquito’s component you should use the related firmware.


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.

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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: 68445867888

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4.2 ★★★★★
Based on 16 reviews
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Product Reviews
A
Verified Purchase
armine arakelian
Waukegan, US
★★★★★ 1
Drying formula and smell bad
Smell so bad and made my hands dry instead of moisturizing. The formula is watery. Maybe it’s fake or expired I am not sure.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 25, 2025
C
Verified Purchase
Cascadian
Omaha, US
★★★★★ 5
Great For Dog Park Fun -- The Ball Goes Flying
Size: 25in, Style: Sport
I love this thing. It's super well made and It enables me to chuck a ball the entire length of the dog park (I'm a 65 yr old woman with a wimpy arm). My dog is thrilled too. At first I thought it might be too heavy, but that's just not an issue, the weight is fine. For non-throwers like me someone at the dog park gave me a tip --- just look at the area you want to throw the ball. Helped my aim immensely. The 2.5 inch chuck it ball it comes with is my dog's absolute *favorite* . . . it's her security blanket in the kennel while driving, and it's her favorite ball to chase (the only one she'll actually bring back). She loves to chew it and to squish the air out of it, which takes a little effort. Recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2025
L
Verified Purchase
leal536
Pawtucket, US
★★★★★ 5
Great tool!
Size: 18in, Style: Sport
Ok - so I do not have a dog!!! I purchased this item for a completely different purpose! I saw someone using this to gather eggs!! I often go to my daughter and son-in-law's homestead to carry out the chores when they need to be out of town! Well, I am a bit on the short side (4'11") and some of the hens KNOW that a short person is going to be gathering eggs!!! I simply could not reach all of the eggs in a couple of the nesting boxes! So, after seeing someone else use this ball launcher as an egg retriever, I bought one! I am now able to reach ALL of the eggs - one at a time with no breakage! It was a game changer for me. I am sure that it works equally well for dog play!!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 15, 2024
S
Verified Purchase
Steven
Omaha, US
★★★★★ 5
A Fun and Engaging Playtime Essential for Active Dogs
Size: 18in, Style: Sport
The ChuckIt! Sport 18M Dog Ball Launcher has been a game-changer in our playtime routine with our energetic and playful dog. This innovative and well-designed ball launcher has become an essential tool to keep our furry friend entertained and active. The 18" length of the launcher provides a comfortable grip for both me and my dog during play. It allows for effortless throwing, making fetch games enjoyable for both of us. The launcher's ergonomic design ensures a smooth and efficient ball-throwing experience, saving me from straining my arm during extended play sessions. The inclusion of a medium-sized ball (2.5") with the launcher is a thoughtful addition. The ball's size and weight are perfect for our medium-sized dog (20-60 pounds), allowing her to easily grab and carry it in her mouth. The ball is also durable and can withstand the enthusiastic chewing of our playful pup. One of the standout features of the ChuckIt! Sport 18M Dog Ball Launcher is its exceptional throwing distance. It allows us to launch the ball far into the distance, providing ample space for our dog to run and fetch. This extended range adds a fun and challenging element to our playtime, keeping our dog engaged and excited. The durable construction of the launcher is commendable. It has proven to withstand rigorous use and outdoor play, making it a reliable and long-lasting investment for our dog's entertainment. Additionally, the launcher's compatibility with other ChuckIt! balls makes it a versatile tool for various play styles and preferences. Whether it's a bouncy rubber ball or a flying disc, the launcher can handle them all. Moreover, using the ChuckIt! Sport 18M Dog Ball Launcher has strengthened the bond between our family and our dog. It encourages interactive play, providing an opportunity for us to engage and connect with our furry companion while promoting exercise and healthy physical activity. In conclusion, the ChuckIt! Sport 18M Dog Ball Launcher has been an absolute joy for our family and our playful dog. Its easy-to-use design, impressive throwing distance, and durability make it a must-have for any dog owner with an active and fetch-loving pet. We highly recommend the ChuckIt! Sport 18M Dog Ball Launcher, along with the included medium ball, for a fun-filled and active playtime experience that both you and your dog will love.
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Reviewed in the United States on August 3, 2023
A
Verified Purchase
Another Floyd
Lowell, US
★★★★★ 5
Essential kit for those with fetch dogs
Size: 18in, Style: Sport
Now in our 3rd year, my Brittany and I are down to about 40 fetch tosses a day, some 14,600 tosses a year. The Chuck It launcher wears well, so, figure at least 5 years of use, for 73,000 tosses. That makes for a terrific value! There are several key benefits of the Chuck It launchers: One is that you can chuck the ball further than you can throw, which allows you to exercise your dog more easily. The second is that you can pick up and launch the ball without touching it, which means NO slime! And, the Chuck It also gives extra reach when you have to retrieve a ball from sticker brambles. Those are great features for anyone with a fetch dog. If you also happen to have a weak arm or shoulder, the Chuck It launchers provide nice throwing options. I generally throw underhanded. I can't get the full potential range, that way, but, I still get good, long tosses. I curl my second finger above the last bump on the handle, and use a good wrist flick along with arm swing. I've seen others throw side-arm with the Chuck It. I had originally written a second review for the longer 25M Chuck It. Either I, or Amazon messed up, and it looks like I can have only this one review. So, here are my additional thoughts on the 25M: I bought the 25M so that I could throw the ball even further! The good news is, you really can chuck further, with the longer chucker. The bad news is, those longer throws do require more arm and shoulder strength than when using the 18M. This becomes more obvious when you've done 3 or 4 dozen throws. I would recommend the 25M only for those with the youth and/or strength to get the most out of it. Otherwise, I'd say, go with the 18M.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 11, 2016

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