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I was looking for a .8 mod pinion for my Raider that wasn’t over priced (32 pitch would probably work but was being OCD). This Arrma pinion looks like it could be perfect.

https://www.amainhobbies.com/arrma-steel-mod-0.8-pinion-gear-18t-ara310758/p-qtavtaeqnz2xactz?gclid=CjwKCAjwzruGBhBAEiwAUqMR8DZtqBLxnr-srzUC9kKtpz_U0d2J0QQMqTM1bH32gCh8kI-NwcgUIhoCJ-AQAvD_BwE

Does this look like it would fit a normal 540 motor? I just know nothing about Arrma.

The model it's listed for uses a 5mm shaft motor. If that is correct, the answer is no.

Might be best to contact them directly. It could be 1/8", 5mm, or 5mm with a 1/8" sleeve. All are common enough.

If all you can find are 5mm pinions, the reducer sleeves are available separately, for ~$4-5.

Thanks guys! Maybe this one will work? What diameter should I look for? 3.2 mm?

https://www.amazon.com/gp/aw/d/B01CEG9W92/ref=cm_cr_arp_mb_bdcrb_top?ie=UTF8

https://www.ebay.com/itm/133687291992?_trkparms=ispr%3D1&amdata=enc%3AAQAGAAAAkFIeikGrekv7qpboniMyE9kDdwvozgh0me%2BGVYm3l03Z60YzA3ZT%2Bsc5NwvKnTDMGMrzXtA9I8N6%2BrG8vLHfsDWZdsmDg2fgeIJ1cxm9aPLrjzAEt5%2B0lY66JupVDK%2FBSzNBOKBqzDXddwiwo4PTkeyTs1kIBpCSi%2BlNmb2uciWIVTdnUjTWJQ81%2FC3rIWkGhA%3D%3D&chn=ps&gbraid=0AAAAAD_QDh9FZOoC7oZLP8E6tpG_4IOBm&norover=1&mkevt=1&mkrid=711-117182-37290-0&mkcid=2&itemid=133687291992&targetid=1262376589136&device=m&mktype=pla&googleloc=9007459&poi=&campaignid=12873834460&mkgroupid=120270036134&rlsatarget=pla-1262376589136&abcId=9300536&merchantid=6311274&gclid=CjwKCAjwzruGBhBAEiwAUqMR8COUo7yfXeX_Y9GegTWHfaBPwyxtfrAkLswg80YPqj-7gYS2cl-tORoCAkQQAvD_BwE

The stock pinion isn’t that expensive..

https://www.ebay.com/itm/372745821632?hash=item56c961ddc0:g:vOIAAOSw1fZdXwlK

BattleTrak wrote: ↑Mon Jun 21, 2021 12:59 pm The stock pinion isn’t that expensive..

https://www.ebay.com/itm/372745821632?hash=item56c961ddc0:g:vOIAAOSw1fZdXwlK

I was not looking for stock nor one made out of soap……

Ok. You didn’t mention that..just trying to help. How about the W-5085?

https://www.ebay.com/itm/324232832709?hash=item4b7dc866c5:g:M4AAAOSwR4JfEcuy

BattleTrak wrote: ↑Mon Jun 21, 2021 8:05 pm Ok. You didn’t mention that..just trying to help. How about the W-5085?

https://www.ebay.com/itm/324232832709?hash=item4b7dc866c5:g:M4AAAOSwR4JfEcuy

You are right, I didn't say in the post I was looking for an 18 tooth! It was only in the links.

Thanks for trying to help. I ordered the Red Cat one from Amazon and will let folks know if it works/seems like it is decent quality (It seems like it should fit the motor shaft). I saw an 18t Kyosho pinion on Ebay but it is aluminum (at about $15 SHIPIPED) and I am not so sure it will hold up to my brushless setup (my 37 mph+ Raider that is getting ready to be just shy of a 40 mph car lol)! She is a ripper!

I am going to go back to a stock sized rim and see if it helps lower the center of gravity a touch to make it more stable under braking (my cheap ESC/motor combo doesn't have any modulation for the brakes.... all or nothing at either 25, 50, 75, or 100% power.... and 25% is sill too much).

I have a few videos on it running brushless but here is one with it running on a half charged LIPO https://www.youtube.com/watch?v=lF127bHUUDs&feature=youtu.be