METALCLOAK
Reference: MC7373
Service parts
MetalCloak Duroflex Bushing 2.63D x 2.32L x .57ID with Kevlar
Replacement elastomer insert for MetalCloak Duroflex joints, sized 2.63" x 2.32" x 0.57" (approx. 66.8 x 58.9 x 14.5 mm), with a compound reinforced with DuPont Kevlar fibre. MetalCloak uses it in, among others, the 7004 upper rear control arms for the Jeep Wrangler JK and JL. Sold individually, so a worn joint can be rebuilt without replacing the whole arm.
MetalCloak Duroflex Bushing 2.63D x 2.32L x .57ID with Kevlar (part no. 7373)
A control arm joint works with every metre you drive. On tarmac it makes millions of tiny movements; off road it has to let the axle twist through a large angle. When the insert wears out, a Duroflex joint does not need a new arm or a new housing, only a new elastomer insert. This is that insert.
A genuine MetalCloak part, number 7373: 2.63" diameter, 2.32" length, 0.57" bore. MetalCloak fits it in the 7004 upper rear control arms for the Wrangler JK and JL and in its rear control arms for Toyota and Lexus. The elastomer compound is reinforced with DuPont Kevlar fibre.
| Dimensions (inches) 2.63D x 2.32L x .57ID approx. 66.8 x 58.9 x 14.5 mm | Material Vulcanised elastomer with DuPont Kevlar fibre | Application MetalCloak control arms 7004 (Jeep JK/JL), 7801 and 7807 (Toyota/Lexus) |
Key benefits
- Vibration damping. MetalCloak claims an OEM-quality ride and better damping than rubber Clevite-style bushings. In practice: less vibration passed from the axle to the body in daily driving.
- 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 insert 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. A fibre with a very high tensile-strength-to-weight ratio, embedded in the insert's elastomer.
- Easy to rebuild. A Duroflex 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) 7373.
- The joint housing, washers and snap rings are not part of this product. The insert goes into the housing already in your control arm.
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Technical data
- Manufacturer: MetalCloak
- Manufacturer part number: 7373 (MPN SS-1030)
- Outer diameter: 2.63" (approx. 66.8 mm)
- Length: 2.32" (approx. 58.9 mm)
- Bore: 0.57" (approx. 14.5 mm)
- Material: proprietary vulcanised elastomer compound with DuPont Kevlar fibre
- Kevlar version marking: "M" logo on the outer surface
- Grease recommended by MetalCloak: Superlube (Teflon-impregnated synthetic silicone grease)
- Weight stated by MetalCloak: 2 lb (approx. 0.9 kg)
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 (2007–2018) and JL (2018+): the pre-2021 version takes 4 x 7373, the 2021+ version takes 2 x 7373 and 2 x 7387.
- MetalCloak 7801, rear upper arms: Toyota 4Runner 2003–2024, Lexus GX470 2003–2009, Lexus GX460 2010+, Toyota FJ Cruiser 2007+.
- MetalCloak 7807, rear lower arms: Toyota 4Runner 2025+, Toyota Sequoia 2023+, Lexus GX550 2024+, Toyota Land Cruiser 250 2024+.
MetalCloak notes that 7004 arms exist in two versions depending on when they were made. Check yours before ordering. Do not confuse this insert with MetalCloak 7375, which has the same diameter and bore but a length of 2.62".
Who it is for
For owners of MetalCloak control arms with Duroflex joints whose insert is worn or damaged, and for anyone who wants a spare insert before a longer trip. You replace only the part that actually wears.
Duroflex 101 – Duroflex joint basics
MetalCloak video: how the Duroflex joint works and what to expect from it.
Installation and maintenance
- MetalCloak rates installation as easy, with no body modification, about 1 hour.
- Rebuild according to MetalCloak: pull the insert, clean it, apply fresh Teflon-impregnated synthetic silicone grease and reassemble the joint.
- Our Szekla4x4.pl workshop can replace the inserts or rebuild the joints for you.
- MetalCloak marks the products on its website as intended for off-road use.
Duroflex joint maintenance
MetalCloak Minute: Duroflex joint maintenance.
Frequently asked questions
How many do I need for MetalCloak 7004 control arms?
The pre-2021 version has 4 x 7373 inserts. The 2021+ version has 2 x 7373 and 2 x 7387. Check your kit version before ordering.
How is this insert different from MetalCloak 7375?
Both have a 2.63" diameter and 0.57" bore, but 7373 is 2.32" long and 7375 is 2.62" long. Choose the insert by the part number in MetalCloak's application guide.
Is the joint housing included?
No. This is the elastomer insert only; it fits into the housing already in the control arm.
Which grease should I use when rebuilding?
MetalCloak uses Superlube, a Teflon-impregnated synthetic silicone grease, for Duroflex inserts.
How do I recognise the Kevlar insert?
By the MetalCloak "M" logo on the outer surface of the insert.
Why choose it
- Genuine MetalCloak part for Duroflex joints.
- 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 version of the 7004 arms you have, contact us before ordering.
