Comma Extreme Dev Kit NOW AVAILABLE

[LivingInKaos]

R1S/R1T (GEN1) Extreme Dev Kit / Angle Control Upgrade is now available for pre-order
The new Angle-based harness for Rivian GEN1 unlocks steering angle control for the R1S / R1T (GEN1). All features of the Longitudinal Upgrade are built into the same box, and you no longer need a second USB-C cable. Ships in approximately 6 weeks.

25% off for Longitudinal Upgrade owners
If you already bought the Longitudinal Upgrade, use code FXTY9FKP9N69 at checkout for 25% off. Valid for 60 days, through July 15, 2026. Important: This coupon is only for people who previously bought the Longitudinal Upgrade. If the name or email on your order does not match our list of Longitudinal Upgrade buyers, the order will be canceled.

Already own the Rivian GEN1 Harness? Read this.
If you bought the Rivian GEN1 Harness (not the Longitudinal Upgrade) and your order number is #1628 or later, you already have a car harness that is compatible with angle control, even though it was not advertised as such at the time. You only need to buy the box, not the full kit with the harness. Since the box cannot be bought on its own in the online shop, just send me an email at [email protected] with your order number and I'll set you up.

https://xnor.shop/products/r1s-r1t-gen1-extreme-dev-kit

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[LivingInKaos]

I've been running this for about 5 weeks helping @gerrylum and Lukas test things out. With angle steering, tires don't make a difference in ability any more. I was running on the 20in Pirellis for 4 weeks of that and when I switched back to my Hankooks that were much better with the torque steering - there was no change in performance.

 

[godfodder0901]

So we know if the box can be added to the Comma harness?

 

[LivingInKaos]

So we know if the box can be added to the Comma harness?

No, you have to change to the Xnor harness

 

[LivingInKaos]

 

[jrmbadger]

How about the tarrifs issue - I think you said somewhere that he was looking to ship this via the US?

 

[LivingInKaos]

How about the tarrifs issue - I think you said somewhere that he was looking to ship this via the US?

Correct, Lukas has a USA based distributer and is taking care of the tariffs that way so there is no hassles for the buyer.

 

[jrmbadger]

Correct, Lukas has a USA based distributer and is taking care of the tariffs that way so there is no hassles for the buyer.

Ok, great! Anything special to make sure we don't have to pay the tarrifs?

Already pre-ordered!

 

[LivingInKaos]

Ok, great! Anything special to make sure we don't have to pay the tarrifs?

Already pre-ordered!

Nope ! Just sit back and wait for it to ship ! Congrats!

 

[Semibruce]

Appreciate all the work that went into this!

Hopefully the install is a bit easier the second time. Regardless, Comma for Rivian is amazing and totally worth some fiddling to get the harness aligned. I've had zero complaints with the longitudinal upgrade, so looking forward to an upgrade to my upgrade.

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