New 620 Idler Arm Design Full Roller Bearing

[]2eDeYe]

I designed a new housing for the 620 idler that uses roller bearings. It uses roller bearings and thrust washers to reduce friction. I also added 2 more fasteners to solidly mount it to the frame. 

Here are some development pics. 

 

 

 

 

 

 

 

[]2eDeYe]

Video showing the issues with the stock design and how my new design works to fix those issues. 
 

 

[Ooph!]

Are you going to be selling those?

[]2eDeYe]

That is the plan.
Still need to figure out prices and possible options.

Assembled? Just fabbed parts with a parts list? Somewhere in between? Opinions? 
Either way you would have to supply the arm itself as I have no way to make those. 

 

 

[JumboFett]

So cool! Awesome job and great design!

[Stoffregen Motorsports]

Yep, that's a really nice piece.

 

You'd probably sell more of just the fabbed parts, but 80% of those would never get installed cause people are inherently lazy. If that bothers you, then a kit without the arm is a better idea.

[]2eDeYe]

Thank you. 

Appreciate the input. How I offer them will probably depend on how lazy I am.  🙂

[Crashtd420]

Any chance these would work on a 521? 

[]2eDeYe]

I have been told the 620 works on the 521. Will have to have one test fit to be sure.  

[ducky]

how much of this is or can be stainless or aluminum? Not a deal breaker, but replacing rustable parts with non is always my preference. I'll buy one. I expect you'd want new idler arms to pull apart though, wouldn't you?

[]2eDeYe]

Aluminum and stainless are expensive options. Steel is paintable or treatable. 

You do have to use your existing arm, but you can install it. 

I have some sets out for testing. Will update then they are available for purchase. 

[ggzilla]

wow that is a work of art

[]2eDeYe]

On 2/25/2025 at 4:11 PM, ggzilla said:

wow that is a work of art

Thank you 🙂

[projectrally]

Watched the video.  Looks great!  When do you expect to have them available, and do you have a cost estimate?

[ducky]

I've been under my truck a few times this last couple weeks and my new arm and other suspension stuff already has broken rubber everywhere. Bleh.

[79datsun620]

I would definitely be interested in one of these. Having issues with play in my steering right now. please let us know when you have some to sell. 

[Mrbookends]

1 hour ago, 79datsun620 said:

I would definitely be interested in one of these. Having issues with play in my steering right now. please let us know when you have some to sell. 

Yep, ditto - I've definitely got the spare cash for this!

[banzai510(hainz)]

PM him he will get back to you

[DarkBlack]

Any News on this? 🙂

[]2eDeYe]

I have plates to weld up a few sets. I need to order bearings and hardware and then figure out pricing. 

[hobospyder]

i forgot about these 🤦🏼‍♂️

 

need another set for the other truck 

[Draker]

I don't need it, but I want it. So let me know.

[Mrbookends]

Maybe it's frowned on, but I'm going to bump this for myself because I definitely want a set once the winter comes and goes........ and once I know what my new address will be after I move at the end of the month!

[bbydanny]

I am interested in this.  What are you charging?

[lil Hustler 620]

I saw this video,definitely would buy one. Please let me know what the price of these are!