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Ships within 48 hours · Estimated delivery Jun 28 - Jul 3
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Description
arms bis gear Retro ARMS PandoRA 20:1 Gears, 4mm Axle – BRILL ARMORYFully CNC machined gears from high quality hardened steel. Made in the Czech Republic. These gears will yield a slightly lower rate of fire and higher torque when upgrading from the standard 18: 1 gears found in many gearboxes. For enhanced feeding with a high rate of fire, consider incorporating the Retro ARMS 4mm POM Delayer Clip. The 4mm axle has theoretical advantages, such as increased durability and improved force distribution. The 4mm Axle is
Fully CNC machined gears from high quality hardened steel. Made in the Czech Republic.These gears will yield a slightly lower rate of fire and higher torque when upgrading from the standard 18:1 gears found in many gearboxes. For enhanced feeding with a high rate of fire, consider incorporating the Retro ARMS 4mm POM Delayer Clip.
The 4mm axle has theoretical advantages, such as increased durability and improved force distribution.
The 4mm Axle is not compatible with common 3mm shims, bushings, and bearings. Specialized 4mm shims, bushings, or bearings will be required for installation.
4mm gear products available here (opens in new window.)
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
4.8 ★★★★★
Based on 187 reviews
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Product Reviews
★★★★★ 4
Good price ! Fast delivery!
Just what I needed !
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Reviewed in the United States on October 2, 2023
★★★★★ 5
As advertised
as advertised
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Reviewed in the United States on January 11, 2026
★★★★★ 5
Nice tire sealant.
Size: 32 oz
This seems to work very well. I will say that it seems to be pretty important to move the wheel around as soon as you can to distribute the product within the tire. I was held up for a few minutes and the Liqui tube seemed to start to set up in one spot and made the tire out of balance so I had to work quick to get it to distribute to the other parts of the tire. It seems to have worked though and so far the tires are holding air very well. I will be interested to see if it lasts for a long time but so far so good.
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Reviewed in the United States on May 18, 2026
★★★★★ 5
This stuff works!
Size: 32 oz
I was sceptical but wanted to avoid replacing 2 rear tires on my zero turn mower. The tires were leaking air and had bad sidewall cracking. I found the use of the product to be easy and quick. I aired up the tires and rode around the yard a few minutes to distribute the product in the tires. It has been 4 days and both tires remain aired up. Previously both tires would already be flat within this timeframe. Excellent results for me!
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Reviewed in the United States on May 18, 2026
★★★★★ 1
Doesn’t work for a car Tire seal slow leak
Size: 16 oz
Does not work for a car tire. Had a slow rim seal leak. Out 32oz in still leaks the same. Do not buy. I got the one with fibers in it. It worked just fine. This does not work. Period. $30 wasted actually I purchased two so I wasted $60 when I could’ve bought probably a new tire
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Reviewed in the United States on April 8, 2026
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