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Ships within 48 hours · Estimated delivery Jul 2 - Jul 7
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Description
crowned gear teeth Slot.It GM28i Modular Racing Crown Gear, 28-Teeth** IMPORTANT: The Lock Ring, available in two sizes, must be purchased separately to complete assembly of this modular crown gear. The lock ring includes the set screw. Slot. It GM28i Modular Racing Crown Gear, 28 Teeth. These are Slot. It's second generation crown gears featuring less wear and less friction than the first generation crown gears. This is accomplished by eliminating the integral brass or aluminum hub. The modular design features three
** IMPORTANT: The Lock Ring, available in two sizes, must be purchased separately to complete assembly of this modular crown gear. The lock ring includes the set screw.
Slot.It GM28i Modular Racing Crown Gear, 28-Teeth. These are Slot.It's second generation crown gears featuring less wear and less friction than the first generation crown gears. This is accomplished by eliminating the integral brass or aluminum hub. The modular design features three components:
- Gear - Exactly the same as first generation Slot.It crown gears but without the attached hub
- Lock Ring - hold the gear assembly in place on the axle allowing for very precise gear mesh adjustment. Must be purchased separately (see below).
- Steel Washer (2) - these work as a bearing ("thrust washers") to reduce friction as the gear and lock ring rotate
Assembly is straightforward - click here for instructions.
Click the following link to purchase Lock Rings.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.1 ★★★★★
Based on 1952 reviews
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Product Reviews
★★★★★ 5
As good or better than most.
Size: 4ft, Color: Silver
I was very happy with this item. It’s very heavy duty and appears to be something that will last me forever.
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Reviewed in the United States on May 25, 2026
★★★★★ 5
27" monitor mounted easily
Style: Single Arm, Size: 13"-34", Style: Single Arm, Size: 13"-34"
I ended up getting 2 of these monitor arms for the different desks in our office, and I am happy with both of them. The arms are super easy to assemble and adjust to the tension one desires. The arms hold the position where one sets them too, and the gas pistons make it super easy to use.
Each arm has a channel on the bottom that allows the wiring to be ran through and hidden, yet remaining accessible if needed. The mounting clamps hold securely and there is no wiggle whatsoever, and it is nice to have a strong feeling monitor mount.
It is lightweight and compact so it doesn't feel clunky on the desk. Highly adjustable left to right, up and down, and the screen forward and backward tilt. The price is really good for the overall value and quality of the product. Just make sure to order the right mounting arm depending on the size of your monitor, and you will be fine.
Nice quality and feel, and the aesthetics are great too.
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Reviewed in the United States on May 1, 2026
★★★★★ 5
Get this one!
Style: Dual Arms, Size: 13"-32", Style: Dual Arms, Size: 13"-32"
I got this dual monitor arm for my home office, and it’s been a total game changer. Having a dual monitor setup makes multitasking so much easier, especially for photo and video editing.
Setup was incredibly quick (under 5 minutes), and it feels very secure once mounted. I really like how stable it is and how easy it is to adjust the height and angle.
It also helped clear up a lot of desk space since I no longer need bulky monitor stands. Simple design, but it works perfectly. Highly recommend for both single and dual monitor setups. Great value for the price!
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Reviewed in the United States on March 22, 2026
★★★★★ 5
Pretty great product
Style: Dual Arms, Size: 17"-33"
Stand works great and as expected. I have a 32” monitor on one and a 26” ultra wide in the vertical position on the other.
I’ve had them for a few months and they’ve held tension perfectly. Usually, I find these spring tension arms to become loose after a few months and you just tighten them back up, these are still stiff like when I first set them up, and I move them around quite often. The monitors can rotate 360 degrees and tilt up and down almost 90 degrees each way.
The clamp is sturdy so you will feel comfortable making sure it’s tight on the desk. I do plan on drilling a hole to mount the desk to mount it without a clamp and will update my review when I do so. It comes with the hardware to do either mounting options.
They're made entirely of metal except for the plastic cable trays that clip along the bottom of the arms. The entire build is well worth the cost and gives me more space on my desk and helps my workflow when editing photos or editing video.
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Reviewed in the United States on April 30, 2026
★★★★★ 4
Pretty good product
Style: Single Arm, Size: 13"-34"
Assembly of the actual stand is easy, mounting to a monitor is not because of industrial design fluff. Gotta make the side you DON'T see look "sleek" and "smooth" and "organic" and "integrated" because...reasons. While this is on the manufacturer(s) of the monitor itself, what semi-modern monitor uses 100x100 VESA anyway?
The included long screws are too long. Even using the plastic spacers they'll bottom out with a 2mm gap; add washers and it's a lever arm and not solid or confidence-inspiring. I used a die grinder to remove the excess material closer to 75x75 and used the included short screws, perfect. So either include 25mm screws instead of the 30mm (but then the spacers would be too long), or just update the mount plate to 75x75 only, and throw 100x100 "compatibility" into the dustbin of history where absolutely no one will miss it.
Arm does move/adjust smoothly and is holding a 34" widescreen where I left it 2 days ago, so it IS a great product once it's properly fitted.
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Reviewed in the United States on January 22, 2026
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