Rough Country 1071 vs JKS JKS1651: TJ fixed-length lower control arms

Published 10 September 2026

These two parts do the same thing. Each is a pair of one-length tubular arms with rubber bushings at both ends, meant to replace the stock lower arms once a TJ has been lifted. The difference is in what each maker is willing to put in writing, and what happens when a bushing wears out.

Rough Country picked this fight on price. JKS answers with a published tube spec, a caster claim and a warranty that does not stop at the steel. Every number below comes from the makers, their install sheets, or a named distributor listing.

At a glance

What these arms are, and why a lifted TJ needs them

A TJ locates each axle with four control arms, two upper and two lower. That is eight in total, which is why complete arm sets for the TJ are sold as eight pieces. JKS calls this the "original 4-link suspension configuration" in its install sheet.

Each lower arm bolts between a bracket on the frame rail and a bracket on the axle. When a lift drops the axle away from the frame, a stock-length arm has to run at a steeper angle. Its horizontal reach gets shorter, and the axle is drawn toward the frame bracket.

JKS says the JKS1651 is "longer than stock to provide correct caster on 2" lift to 4.5" lifts." Rough Country does not say its arm is longer than stock. Its listed length, though, is within 0.02 in of the JKS arm.

Fitment, side by side

Will not fit, or not recommended:

• Rough Country 1071. The maker recommends it for a TJ with a 4 in lift and gives no other TJ height. It lists no stock-height use.
• JKS JKS1651. Quadratec lists it as "not compatible with stock height suspension." The install sheet limits it to the original 4-link layout and a ride height up to 4.0 in.

The product page says 2 to 4.5 in, while the JKS install sheet says ride height up to 4.0 in. We treat 4.0 in as the ceiling, because the install sheet is the more specific source.

Specs and construction

JKS publishes the numbers that matter: 2 in DOM tubing with a 1/4 in wall, 16.25 in center-to-center and Clevite rubber bushings at both ends. It is powder coated, and DOM stands for drawn over mandrel.

Rough Country says "steel" and "tubular," with a hammered black powder coat and pre-pressed rubber bushings. It does not publish tube size, wall thickness or tube type on its page, its install sheet or its SEMA data. Quadratec and Eastern Performance name the bushings as Clevite, and only Quadratec gives the 16.27 in length.

Neither maker publishes a bare arm weight. The listed figures are packaged ones: 17 lb for Rough Country (18.10 lb ship weight) and 20 lb shipping weight for JKS at Quadratec.

What's in the box

Install compared

Rough Country states 3-4 hours and recommends a certified technician. Its sheet assumes you are mid-lift: it says the job goes best with the coil springs unloaded and the front shocks disconnected. It gives one torque value, 130 ft-lbs, and asks for a re-torque after 500 miles.

JKS does not publish a time. Its sheet assumes the Jeep is already at height and swaps one arm at a time with the axle supported at normal ride height. It lists a socket set, a torque wrench, a tape measure, anti-seize, a floor jack and jack stands.

The steps that differ are the ones that bite later. JKS tells you to scribe the front cam adjusters before removing anything, to fit each arm "bend down and closer to the front axle," and to torque only with the springs carrying the Jeep. For the TJ it gives 130 ft-lbs front and 150 ft-lbs rear.

Rough Country's sheet does not say whether its 130 ft-lbs applies to the rear too. Quadratec's listing adds "bend facing down" for the 1071. JKS also warns that rubber bushings must never be lubricated, and suggests a ratchet strap or a disconnected track bar if the holes will not line up.

Neither part needs drilling, cutting or welding.

What it changes on the Jeep, and what else you need

JKS says the JKS1651 is longer than stock and ties that to caster in writing. Rough Country states neither, though its listed length is within 0.02 in of the JKS arm.

Both arms are one length. On axles that have factory eccentric cams at the front lower mounts, those cams are the only fine adjustment left. That is why the JKS sheet has you mark them first.

JKS also claims more clearance at the factory axle brackets "for improved front suspension droop travel." Rough Country's claim is that the 1071 "allows for greater articulation off-road." Both are maker claims, not measurements.

Lower arms are one line on a longer list. A lifted TJ still needs its track bar, bump stops, brake lines and driveline sorted, in roughly that order. We cover all of it in what a TJ lift actually breaks.

Warranty and support

Rough Country's policy puts control arms under a Lifetime Replacement Warranty that "covers welds, cracks, or breakage." Bushings sit in a separate line: 1 year, as wear items. Removal and installation costs are excluded. We quote the policy from an archived copy dated 17 July 2019, because the live site blocks automated reading.

JKS offers a lifetime warranty to the original retail purchaser, and it says outright that this "includes a lifetime warranty on bushings and flex joints." Finish claims have to be made within 12 months, and trail use and salty roads are excluded from finish cover. Labor and downtime are not covered.

This is the biggest practical difference between the two. Rough Country's own policy files bushings under wear and tear items. JKS covers them for life, and Rough Country covers them for a year.

Owner reports

These are owner reviews, not specs. We could not retrieve forum threads for either part, so this section is short.

• Rough Country 1071: Matt S., 16 November 2022, 5 stars on Quadratec: "installed pretty easy."
• JKS JKS1651: Jay P., 22 February 2022, on Quadratec: "Straightens differential to the correct angle. Strong durable material."

Who should buy which

• 4 in lift, tight budget: Rough Country 1071. It is the height Rough Country recommends, the length matches JKS within 0.02 in, and it costs $136.00 less.
• 2 to 3 in lift: JKS JKS1651. JKS rates it for that range. Rough Country recommends the 1071 only for a 4 in TJ lift.
• Keeping the Jeep for years: JKS JKS1651. Lifetime bushing cover and a published 2 in by 1/4 in DOM tube are worth the extra money if you will not sell the Jeep.
• Want every torque value on paper: JKS JKS1651. Its sheet gives separate front and rear numbers for the TJ.

Overall winner: JKS JKS1651, for any owner who can spend the difference. Rough Country wins only where price is the deciding factor on a 4 in build.

FAQ

Do the Rough Country 1071 arms fit the front and the rear of a TJ?

Yes. Rough Country lists the 1071 for TJ front and rear lower arms, and for the front only on the XJ, MJ and ZJ. JKS lists the JKS1651 the same way on the TJ: front or rear.

Do these arms fit the 2004-2006 Wrangler Unlimited LJ?

Both makers include it. Rough Country's fitment table lists the 2004-2006 Wrangler TJ Unlimited. JKS names the LJ in the JKS1651 product title.

Will either pair correct caster after a lift?

JKS says its 16.25 in arms are longer than stock to provide correct caster on 2 to 4.5 in lifts. Rough Country makes no caster claim for the 1071. Neither arm is adjustable, so the only fine tuning left is the factory eccentric cams at the front axle, on axles that have them.

Can I reuse my factory control arm bolts?

The JKS install sheet says to retain the original mounting hardware. Rough Country lists only the two arms in the box, and its install sheet does not mention hardware.

Sources

1. Rough Country 1071 product page
2. Rough Country install instructions 92107100 (PDF)
3. Rough Country warranty, archived 17 July 2019
4. JKS JKS1651 product page
5. JKS1651 install instructions (PDF)
6. JKS Manufacturing product warranty
7. Quadratec: Rough Country 1071 listing and reviews
8. Quadratec: JKS1651 listing and reviews
9. Eastern Performance: Rough Country 1071 listing