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Most 930 Turbos get sold on their originality. This 1984 Porsche 911 Turbo on Cars & Bids goes the other way. The seller says it was modified by Kremer Racing, the Cologne tuner behind the 935 K3 that won Le Mans in 1979, and the parts list is long: a 3.5-liter turbo flat-six, billet cams, a numbered Kremer intercooler, a Kevlar front splitter and NACA ducts cut into the quarter panels. The bid stood at $150,000 with 17 bids when we checked, and the auction ends November 11 at 1:30 p.m. EST.
A German-Market 930 With a Kremer Engine
The car is a left-hand-drive, German-market 930 that the seller says was imported to the United States in 1984, with documentation in the gallery. It is titled in Montana, shows 41,700 miles, and is finished in Guards Red over black. Power goes through the factory 4-speed manual to the rear wheels, and a limited-slip differential is listed.
The engine is the headline. The seller describes a Kremer-built 3.5-liter turbocharged flat-six with Andial pistons and cylinders, Kremer billet camshafts, polished and ported heads, a custom high-flow stainless exhaust and the catalytic converter removed. The Kremer intercooler is listed as serial number 46. Those are seller-reported details. The listing does not say how much of the work was done at Kremer in Germany versus later, so the paperwork in the photo gallery is where a serious bidder should spend time.
Kremer's reputation is the draw. The shop built race cars like the Kremer CK5 Group C prototype and also modified factory Porsches for the street, often with aggressive aero and highly tuned engines. A 930 in that mold sits closer to a road-going homage to the race cars than to a stock Turbo.
Racing Hardware in a Road Car
The chassis list is short and sensible: Bilstein shocks, racing-style sway bars, a front strut brace, and 15-inch Compomotive three-piece wheels in a Fuchs style. The body carries a Kevlar front splitter with integrated brake-cooling ducts, a Kevlar rear spoiler and the quarter-panel NACA ducts. Inside, there are DP935-style Kevlar "lollipop" front seats, a Matter Motorsport roll cage, a fire extinguisher mount and a three-spoke steering wheel. Air conditioning, power windows, a sunroof and a rear wiper are also listed, so it was built to be driven rather than trailered.
Not everything is period. The cabin has a Porsche Classic Communication Management head unit, aftermarket speakers, a subwoofer and USB ports in the console. Anyone chasing a purely period-correct Kremer build will want to weigh those additions.
What the Listing Admits
This is a driven car with a repair on its record. The Carfax report notes unspecified damage in May 2024, and the seller says the right fender and right quarter panel were repaired and repainted after a side-swipe collision. There are also scratches under the front splitter. On the mechanical side, the service history shows a transmission overhaul and valve adjustment in December 2021 as part of a $17,768 invoice, followed by regular oil changes through July 2026 and new air-conditioning hoses and a compressor in 2024.
A commenter on the auction noted the engine idles low on cold start, which is the sort of thing to ask the seller about on a built turbo car. If you want the stock-car side of the story first, read why the 930 earned the "Widowmaker" nickname, and compare this one with the Guards Red 1988 930 Turbo we covered earlier.
Why It Stands Out
Plenty of 930s have been modified, but few come with this much Kremer-specific hardware and a numbered intercooler. If the documentation holds up, it is a rare chance to bid on a street-driven version of what Kremer built for customers who wanted something closer to the track cars. The price already reflects that, so the value will depend on how the paperwork and the repair history read in person. Full details, photos and the comment thread are on the Cars & Bids listing.
