Powerflex Front & Rear Lower Coffin Control Arms with Poly Bushes – Porsche 987 - Full Kit
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Powerflex Lower Coffin Control Arm Front & Rear Kit with Bushes – Porsche 987 Gen1 / Gen2 Boxster & Cayman
Imprecise handling? Uneven tyre wear? Braking instability?
These common issues are often caused by worn suspension arms and ageing rubber bushes. The Powerflex Track Control Arm (Coffin Arm) Front & Rear Kit with Bushes is a complete replacement solution designed to restore suspension geometry and improve overall chassis stability on your Porsche 987.
Supplied as a full set of fully assembled coffin arms for both front and rear axles, this kit includes Powerflex Road Series polyurethane bushes pre-installed, eliminating the need for pressing or reusing tired OEM components. By reducing unwanted suspension flex, it delivers sharper steering response, improved braking stability, and more consistent tyre contact — all while maintaining excellent road comfort.
Key Features & Benefits
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Complete front and rear track control arm (coffin arm) kit
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Supplied with Powerflex Road Series polyurethane bushes pre-installed
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Improves steering precision and overall chassis stability
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Reduces braking instability and suspension deflection
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Helps prevent uneven tyre wear
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Direct bolt-on replacement – no bush pressing required
Pre-Built for Easy Installation
These track control arms are supplied fully pre-built with Powerflex polyurethane bushes already installed, removing the hassle, time, and labour involved in pressing out original bushes. This not only simplifies installation but also ensures correct bush alignment and long-term reliability straight out of the box.
Vehicle Fitment
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Porsche 987 Gen1 / Gen2 - All Models
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Fitment position: Front and Rear
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Important Fitment Information:
This product is supplied as a complete front and rear kit.
One kit is required to replace all coffin arms on the vehicle.
Technical Information
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Powerflex Part Numbers: PF57K-1001 & PF57K-1002
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Diagram Positions: 2F & 5R
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Number of Arms Supplied: 4
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Number of Bushes Supplied: 8 (pre-installed)
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Range: Powerflex Road Series
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Material: Performance polyurethane bushes
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Warranty: Lifetime
OEM Cross References
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98133105301 / 99134105304
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99733104180 / 99734105304
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99634105318 / 99134105321
Why Choose Complete Powerflex Arms?
Replacing the full coffin arm assembly ensures worn ball joints and fatigued housings aren’t reused. Combined with Powerflex’s polyurethane bushes and lifetime warranty, this setup delivers a long-term, fit-and-forget suspension upgrade trusted by Porsche specialists.
We offer professional installation services directly in the Rennworks workshop, where your product will be expertly fitted and fully set up for optimal performance. To book an installation appointment, simply contact us and we’ll be happy to arrange a time that suits you.
Not sure if this product is the right fit for your vehicle? We’re here to help. Our team can quickly check compatibility and make sure you’re choosing the correct item before you buy. Just reach out with your vehicle details, and we’ll confirm everything for you.
Some product images are for illustrative purposes only and may show a generic or representative version of the item. Actual components may vary slightly depending on vehicle application or specification, but all products supplied will match the description and meet our quality standards.
Most orders are processed within 1–2 business days and usually ship within 3–7 business days. Not all items are held in stock, as some products are bespoke and made to order — for example, certain coilover suspension kits and exhaust systems — and delivery times may be longer in these cases. Where this applies, we’ll keep you fully informed and confirm expected dispatch dates as soon as possible. If you’d like to check availability or lead times, feel free to contact us before making a purchase.