Creality Upgrade Ender 3 Extruder, Ender 3 V2 Upgrades Metal Extruder Aluminum MK8 Bowden Extruder 40 Teeth Drive Gear for Ender 3 Pro/Ender 5 Pro/Ender 5 Plus/CR-10 Series 3D Printer

Great set of upgrades. HOWEVER the bolt that goes through the extruder arm is not long enough to reach the threads on motor and fails to tighten, you will need a longer one to get things working.

Best Ender 3 upgrade so far, all metal provides much more consistent prints. A must for any stock Ender 3 Pro

Springs are awesome. Line feeder upgrade is awesome. All the extras are awesome. Great price and you will notice the difference.

Love the new feeder upgrade! Works incredibly and is made with high quality aluminum rather than plastic original parts. Only took me 10 minutes to switch out. I bought this because the pressure spring arm broke on the original one since it was plastic.

I am needed to ajust the tension for use the fiexable filament, with the High hope to purchased this extruder BUT..%*#.. Spring adjusting screw head size too big , blocking the lower right mounting hole , can not mount back if assembled. Also this under screw design will have a hard time to adjust spring tension. not useful for me , Returned.

Spring is too tight, leading to the extruder gear to wear away under high clamp pressure over time. Went through two gears in a month. Same problem on both of these extruders.

Easy to install and worked great on my ender 3 v2

Update, was originally going to only send this item back due to missing parts but!... customer service got a hold of me and sent me a new one and all I can say is it’s outstanding! Smooth operations since it’s been installed. Old review below. Only reason this is a two star is I have just received my package and I am missing multiple parts, The bolt that goes into the tightener pulley arm, the tube clam, and I got Curious and checked the length of the tube and only received 1/2 the length I was supposed to. Returning it today, if my replacement is better I’ll fix this review.

Tubing was missing, but seller made it right immediately and everything was great quality! Really appreciated the great customer service!

Excellent quality. Fits ender 3 perfectly, fixed the under extrusion issues.