Service parts
MetalCloak Duroflex Bushing 2.25D x 2.0L x .40ID with Kevlar
Replacement elastomer insert for MetalCloak Duroflex joints, sized 2.25" x 2.0" x 0.40" (approx. 57.1 x 50.8 x 10.2 mm), with a compound reinforced with DuPont Kevlar fibre. MetalCloak uses it in, among others, MetalCloak control arms 7051. Sold individually, so a worn joint can be rebuilt without replacing the arm.
MetalCloak Duroflex Bushing 2.25D x 2.0L x .40ID with Kevlar (part no. 7371)
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. 7371, sized 2.25" x 2.0" x 0.40" (approx. 57.1 x 50.8 x 10.2 mm). MetalCloak uses it in, among others, MetalCloak control arms 7051.

Dimensions (inches) 2.25D x 2.0L x .40ID approx. 57.1 x 50.8 x 10.2 mm | Material Vulcanised elastomer with DuPont Kevlar fibre | Sold as Single piece |
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) 7371.
- The joint housing, washers and snap rings are not part of this product.
Technical data
- Manufacturer: MetalCloak
- Manufacturer part number: 7371 (MPN SS-1054)
- Outer diameter: 2.25" (approx. 57.1 mm)
- Length: 2.0" (approx. 50.8 mm)
- Bore: 0.40" (approx. 10.2 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 7051 – Duroflex upper front control arms, Jeep Wrangler TJ/LJ
- MetalCloak 7052 – Duroflex upper rear control arms, Jeep Wrangler TJ/LJ
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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
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.

