SKU: 81410178348

ARRMA Kraton Outcast 8S 20T Mod1 Safe-D8 Pinion Gear 311040

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Ships within 48 hours · Estimated delivery Aug 12 - Aug 17

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Description

ARRMA Kraton Outcast 8S 20T Mod1 Safe-D8 Pinion Gear 311040The ARRMA Safe D8 20T Mod1 Pinion Gear ARA311040 is a steel drivetrain gear designed for compatible ARRMA Kraton and Outcast 8S vehicles requiring reliable power transfer and secure motor shaft engagement. The Safe D8 design provides a strong connection for high power RC applications using compatible 8mm motor shafts. Features Steel Construction: Durable material designed for demanding large scale RC drivetrain use 20 Tooth Mod1 Gear: Provides the

The ARRMA Safe-D8 20T Mod1 Pinion Gear ARA311040 is a steel drivetrain gear designed for compatible ARRMA Kraton and Outcast 8S vehicles requiring reliable power transfer and secure motor shaft engagement. The Safe-D8 design provides a strong connection for high-power RC applications using compatible 8mm motor shafts.

Features

  • Steel Construction: Durable material designed for demanding large scale RC drivetrain use
  • 20 Tooth Mod1 Gear: Provides the correct gearing option for compatible ARRMA 8S power systems
  • Safe-D8 Shaft Design: D-shaped bore matches compatible motor shaft profiles for secure engagement
  • Precision Manufactured Teeth: Supports smooth and consistent drivetrain operation
  • Replacement And Tuning Part: Suitable for drivetrain maintenance or gearing adjustments

Specifications

  • Brand: ARRMA
  • Part Number: ARA311040
  • Product Type: Pinion gear
  • Tooth Count: 20T
  • Pitch: Mod1
  • Shaft Fitment: Safe-D8 8mm motor shaft
  • Material: Steel
  • Compatibility: ARRMA Kraton 8S and Outcast 8S vehicles

Includes

  • 1 x ARRMA 20T Mod1 Safe-D8 pinion gear

FAQ

Does the ARRMA ARA311040 pinion gear fit the Kraton 8S? Yes. The ARRMA ARA311040 20T Mod1 Safe-D8 pinion gear is compatible with supported ARRMA Kraton 8S vehicles.

What motor shaft size does this pinion suit? The ARRMA ARA311040 Safe-D8 pinion gear is designed for compatible 8mm motor shafts.

Important Notes

  • Check your vehicle and motor specifications to confirm ARA311040 compatibility before installation
  • Ensure correct gear mesh adjustment after fitting to reduce drivetrain wear
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: 81410178348

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Pam Volden
Houston, US
★★★★★ 5
Best air flow
Size: 9.6" x 11.1" x 2.2"
I have a 2022 ram 1500 four-door. The factory filter from the ram dealer is about $40 but it’s not reusable. That was the only one I found that had good airflow into the cabin. I tried several other brands but the airflow was reduced excessively. The ram filter was 15 mph, most of the other aftermarkets dropped the airflow to about 9 mph. I just installed a K&N reusable filter and the airflow is back up to 15 mph. Great job K&N!!
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Reviewed in the United States on March 27, 2026
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CRF Ken
Omaha, US
★★★★★ 5
Fits Well and Reusable. I'm Happy.
Size: 9.6" x 11.1" x 2.2", Size: 9.6" x 11.1" x 2.2"
For less than the price of 2 disposable FRAM CV11671 cabin filters for my 2019 RAM 1500 and this will last forever. If it gets wet, like I've had happen with the paper throw-away filters due to stuff falling off trees in the spring and clogging cowl area water drains and backing up into filter ( yeah, that's a thing ) and can clean and dry this filter and reuse. Great directions came in the box along with a sticker to point out that this is a lifetime filter so someone doesn't throw it away. Do this yourself. Don't let some auto repair shop talk you into it. I was getting tires balanced recently and heard a quote they gave over the phone of $79 to do this. I don't know what kind of vehicle that was for but this ain't rocket science. Don't get ripped off. Now back to this filter. There is no arrow for air flow so I figure it flows well both ways and just put it in with the K and N logo right side up and facing out. It's not a straight in shot the way RAM positioned the opening for the cabin filter slot but was no big deal. Also realize this isn't a perfect square filter ...It's a rectangle so don't try to shove the fat end in and say it doesn't fit. I haven't noticed any air flow differences with the heating / ac system but some people say they do. I'm just happy I don't have to buy anymore disposable filters and can dry this if it gets wet. The cleaning and refresh spray kit is #99-6000 that comes with a 8oz and 12oz bottle and I'm trying to find that cheaper somewhere for when I do clean this thing.
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Reviewed in the United States on November 20, 2025
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TheGrandSyphor
Boise, US
★★★★★ 5
Can’t go wrong with K&N
Size: 9.6" x 11.1" x 2.2"
So I recently took my pickup in to have some recall work done, half way through the process I got a call from the dealership stating I needed a new air filter and that a new one would cost nearly $60. I chuckled and told then to put the old one back in and I immediately came to Amazon and ordered this cabin filter. I’ve used K&N products in the past and have never been sorry, and that is the case with this lifetime filter. Upon installing this filter I noticed an IMMEDIATE difference in air flow into the cabin, it even smelled better. If this filter ever gets dirty Ira easy to clean and reinstall, paying for itself over time. Do yourself a favor and pick one of these up, you will not be sorry.
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Reviewed in the United States on October 20, 2025
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Perfect condition strong material
Los Angeles, US
★★★★★ 5
Perfect fit
Size: 9.6" x 11.1" x 2.2"
Perfect fit on my 2022 jeep wagoner
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Reviewed in the United States on May 20, 2026
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Robert
Louisville, US
★★★★★ 5
Fit my Subaru Forester perfectly!
This fit my 2024 Subaru Forester perfectly. The filters exhibited a high quality construction and was packaged well. Installation was easy and saved me a lot of $ vs. having my dealer install an OEM filter.
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Reviewed in the United States on December 16, 2025

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