MetalCloak Duroflex Bushing 2.56D x 2.32L x .57ID with Kevlar (part no. 7387)

A control arm joint works with every metre you drive: millions of tiny movements on tarmac, large twist angles off road. When the insert wears out, a Duroflex joint needs neither a new arm nor a new housing, only a new elastomer insert.

This is genuine MetalCloak insert no. 7387, sized 2.56" x 2.32" x 0.57" (approx. 65.0 x 58.9 x 14.5 mm). MetalCloak uses it in, among others, MetalCloak control arms 7004.

Key benefits

• Vibration damping. MetalCloak claims an OEM-quality ride and better damping than rubber Clevite-style bushings. In practice, less axle vibration reaches the body.
• High misalignment. The joint lets the arm work at an angle without binding, which means freer axle articulation off road.
• Self-centering. Once unloaded, the arm returns to its neutral position.
• Absorbs micro-movements. The elastomer takes up the small rotational movements of daily driving that gradually wear out conventional ball-type flex joints.
• Bearing-like outer surface. At large angles the outer surface of the insert rotates in the housing instead of binding the arm.
• Kevlar in the compound. MetalCloak's proprietary elastomer is reinforced with DuPont Kevlar fibre. Kevlar inserts carry an "M" logo on the outer surface.
• Easy to rebuild. The joint does not need parts replaced every year; when it is time, you pull the insert, clean it, grease it and reassemble.

What is in the box

• 1 MetalCloak Duroflex insert (bushing) 7387.
• The joint housing, washers and snap rings are not part of this product.

Technical data

• Manufacturer: MetalCloak
• Manufacturer part number: 7387 (MPN SS-6021)
• Outer diameter: 2.56" (approx. 65.0 mm)
• Length: 2.32" (approx. 58.9 mm)
• Bore: 0.57" (approx. 14.5 mm)
• Material: proprietary vulcanised elastomer compound with DuPont Kevlar fibre
• Grease recommended by MetalCloak: Superlube

Which control arms it fits

According to MetalCloak's application guide this insert is used in:

• MetalCloak 7004 – Duroflex upper rear control arms, Jeep Wrangler JK and JL, 2021+ version (2 x 7387 + 2 x 7373)

7004 arms exist in two versions depending on production date. The pre-2021 version uses 7373 inserts only. Check your version before ordering.

Installation and maintenance

• Rebuild according to MetalCloak: pull the insert, clean it, apply fresh Teflon-impregnated synthetic silicone grease (MetalCloak uses Superlube) and reassemble the joint.
• Our Szekla4x4.pl workshop can do the replacement or rebuild for you.
• MetalCloak marks the products on its website as intended for off-road use.

Frequently asked questions

How many do I need for 7004 arms?

The 2021+ version has 2 x 7387 and 2 x 7373. The pre-2021 version has 4 x 7373 and does not use 7387.

Is the joint housing included?

No. This is the elastomer insert only; it fits into the housing already in the arm.

How do I choose the right size?

By your control arm part number in MetalCloak's application guide or by dimensions: diameter, length and bore. Inserts that differ only in length or bore are not the same product.

Which grease should I use?

MetalCloak uses Superlube for Duroflex inserts.

How do I recognise the Kevlar insert?

By the MetalCloak "M" logo on the outer surface.

Why choose it

• Genuine MetalCloak part.
• Rebuild the joint instead of buying a new control arm.
• Bought from an authorised MetalCloak dealer with an in-house workshop.

If you are not sure which size fits your suspension, contact us before ordering, ideally with the part number of your control arm.