Mopar lift control arms or Rancho Sport Flexarms?

[Bushfam5]

Installing Rubicon suspension on Sport. Mopar extended arms will cost $106 with shipping to Las Vegas or Rancho Sportarms are $200. Rancho arms say for lifts between 1.5" - 3.5".

Suggestions? Budget will not allow for more than $200

Thanks

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[DadJokes]

Unfortunately I do not have any experience with the Rancho control arms but after 16,000 miles on my Rubicon suspension equipped Sahara it’s been just fine. I think I spent $70 or less to my door for the Mopar control arms Dec ‘19. Did the price go up?

 

[Bushfam5]

The arms are only like $31/ea but it’s $45 to ship to Las Vegas.

 

[Roky]

Installing Rubicon suspension on Sport. Mopar extended arms will cost $106 with shipping to Las Vegas or Rancho Sportarms are $200. Rancho arms say for lifts between 1.5" - 3.5".

Suggestions? Budget will not allow for more than $200

Thanks

Mopar arms will work fine with Rubi suspension.

 

[DadJokes]

The arms are only like $31/ea but it’s $45 to ship to Las Vegas.

Is that the quote from Allmoparparts, a vendor here?

 

[Yondu_JLU]

Mopar arms work fine for rubi suspension....if you plan on lifting your jeep in the future though I'd go with a set of adjustable control arms in order to dial in caster. My extended mopar arms yielded an astoundingly low amount of caster once lifted.....3.9 degrees

 

[ItsNo4RE]

could you use the rubicon control arms?

 

[DadJokes]

could you use the rubicon control arms?

Those are the same length arms across all JL’s.

 

[ItsNo4RE]

Those are the same length arms across all JL’s.

so why would a rubicon suspension on a non rubi need longer control arms?

 

[Bushfam5]

I got the cost on-line at Allmoparparts website. Shipping is crazy!!

 

[DadJokes]

so why would a rubicon suspension on a non rubi need longer control arms?

The higher you go, the lower the caster in degrees which makes the steering a little more sensitive/twitchy. The Rubi’s should come from the factory with Mopar LCA’s but they don’t. Probably comes down to cost reasons.

 

[rickinAZ]

could you use the rubicon control arms?

The underlying issue is that the OEM lower control arms are the exact same part for Sport/Sahara/Rubicon. [Hence using the Rubicon's LCA doesn't buy anything]. The Rubicon's should be longer to offset (caster-wise) because it's (slightly) lifted compared to the Sport/Sahara. This is considered to be something of a miscalculation by the factory's setup. So the go-to inexpensive solution is to use the LCAs from the Mopar lift kit because they are .25" longer than the stock bars. If you go to a higher lift, you'll need adjustable LCAs to get another 1/8" or so.

 

[ItsNo4RE]

The underlying issue is that the OEM lower control arms are the exact same part for Sport/Sahara/Rubicon. [Hence using the Rubicon's LCA doesn't buy anything]. The Rubicon's should be longer to offset (caster-wise) because it's (slightly) lifted compared to the Sport/Sahara. This is considered to be something of a miscalculation by the factory's setup. So the go-to inexpensive solution is to use the LCAs from the Mopar lift kit because they are .25" longer than the stock bars. If you go to a higher lift, you'll need adjustable LCAs to get another 1/8" or so.

Great explanation brother, I appreciate it

 

[ItsNo4RE]

The higher you go, the lower the caster in degrees which makes the steering a little more sensitive/twitchy. The Rubi’s should come from the factory with Mopar LCA’s but they don’t. Probably comes down to cost reasons.

Gotcha. Thank you much

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