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Current Bid: £75,092

2021 Porsche 718 Cayman GT4 DeMan 4.5L 6-Speed

Bring A Trailer • US • 2 Nov 2026

Market Position:

Lowest 10% of Past Sales

Track live values and receive listing alerts

Track live values and receive listing alerts

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Current Bid: £75,092

2021 Porsche 718 Cayman GT4 DeMan 4.5L 6-Speed

US • 2 Nov 2026

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Vehicle Details

AI Listing Summary

This 2021 Porsche 718 Cayman GT4 features a rare 4.5-liter conversion by DeMan Motorsport, enhancing its performance significantly. The manual transmission with revised gearing and limited-slip differential makes it a driver's car.
Modifications include performance exhaust, clutch, and flywheel, indicating a focus on enhanced driving dynamics and power.

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Condition 

7

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/ 10

Manual

2021

Auction

LHD

United States

Current Bid: £75,092

2021 Porsche 718 Cayman GT4 DeMan 4.5L 6-Speed

Bring A Trailer • US • 2 Nov 2026

Market Position:

Lowest 10% of Past Sales

Track live values and receive listing alerts

Description

This 2021 Porsche 718 Cayman GT4 is powered by a flat-six that was modified in 2022 with a 4.5-liter conversion by DeMan Motorsport, who also fitted catalyst-equipped headers, over-axle exhaust pipes, a lightweight clutch and flywheel, a limited-slip differential, and revised gearing for the six-speed manual transaxle.

Price Analysis vs Other Cayman (718) GT4s

£50,400

Lowest Price (Since 2020)

£98,556

Median Price (Since 2020)

£142,317

Highest Price (Since 2020)

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World Record

If this vehicle sells at the mid-point of its estimate it will set a new world record for the [enter model]

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Lowest 10% of Past Sales

Compared to previous sales, the sale price placed this vehicle in the lowest 10% of past sales for the Cayman (718) GT4.

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Lowest Price

If this vehicle sells at the mid-point of its estimate it will be the lowest price we've seen for the [enter model]

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Average Price

The mid-point of the vehicle's estimate places it near the average price we see for the [enter model]

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Rare Sale

This vehicle comes to market rarely. In auction records we've only seen [enter number] sold before

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Icon

This vehicle is an icon of the game. Any collection would benefit from having one

Previous Cayman (718) GT4 Sales

MOT Information

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Latest MOT mileage:

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MOT History

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MOT Mileage Trend

Gallery

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Auction House Headquarters

Bring A Trailer

1300 22nd Street, Suite 200, San Francisco, California, 94107, US

Operating from San Francisco, California, Bring A Trailer is an online auction platform dedicated to classic, performance, and collector vehicles. They operate timed online auctions globally and provide vehicle consignment.

Insurance

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