2021 BAC Mono R

VIN SA9BUNCB1ML211010

event_available Apr 16, 2026
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What’s special about this listing

42-Mile 2021 BAC Mono R

Car Details:
Year: 2021
Make: BAC
Model: Mono R
VIN: SA9BUNCB1ML211010
Mileage Shown: 42 mi
Transmission: Sequential
Color: Grey
Title: Bonded (Expires Aug-2028)
More Photos available

Manufactured in Liverpool by the Briggs Automotive Company, the street-legal BAC Mono is a super lightweight single-seater sports car offering unadulterated performance to rival some of the most extreme track-only race cars. The ultimate Mono R version debuted in 2019 equipped with a more powerful 2.5L Mountune Racing engine and lighter graphene-enhanced carbon fiber bodywork lending to an astonishing power-to-weight ratio of 0.461 kW/kg. This 2021 example is now being offered under dealer consignment out of Colorado with just over 40 miles showing on the odometer.

The Mono is constructed around a TIG-welded seamless tube steel driver safety cell featuring a carbon fiber crash box and an FIA-compliant rollover protection system. Compared to the original Mono, the R version features revised graphene-enhanced super light carbon composite low-drag bodywork with a 25mm increase in length and a 20mm reduction in overall height. This example is finished in grey with an exposed 2x2 carbon twill. Equipment includes dual mirrors, LED lights, exposed pushrod suspension, an F3-style carbon fiber ram air intake, an integrated rear spoiler, a rear diffuser, titanium tow eyes, dual center-mounted tailpipes, a locking billet aluminum fuel cap, and 17” Dymag carbon fiber wheels dressed in Pirelli P Zero Trofeo R tires. The seller indicates the car has not seen any time on the road apart from its factory test drive.

The exposed carbon fiber cockpit features waterproof suede upholstery and grey stitching. Currently, there is no seat installed, although a $7,950 credit at BAC will be transferred to the buyer to have a seat fitted to them by the factory. The driver is provided with an FIA-compliant safety harness and a quick-release 290mm carbon fiber steering wheel with a billet aluminum housing, illuminated switch gear, pneumatic paddle shifters, and a GEMS LDS4 color display. Other features include a remote battery charge socket, AP Racing cockpit-adjustable brake bias, an electronic parking brake, an adjustable AP Racing pedal box, and a BAC-developed cockpit aero screen.

Co-developed with engine partner Mountune, the BAC Mono R is powered by a Ford Duratec-based 2.5-liter inline-four engine with forged pistons and connecting rods, a billet crankshaft, a lightweight titanium 4-into-1 exhaust, and a gas-flowed cylinder head with individual butterfly port throttles. Up to 343 HP is sent to the rear wheels through a lightweight magnesium Hewland FTR 6-speed sequential transmission and a Powerflow limited-slip differential. The suspension includes adjustable pushrod double-wishbone suspension with two-way adjustable Öhlins dampers, lightweight billet aluminum uprights, and Eibach racing springs. Stopping power comes from AP Racing Formula Car 4-piston brake calipers paired with Surface Transforms carbon ceramic discs. The seller notes that the remote key is not always recognized by the car and the issue may need to be addressed.

Specs

Details about this vehicle - decoded from the VIN & CLASSIC.COM curators. Contact the seller for specifics about this listing.

Year
2021
Make
BAC
Model Family
Mono
Model Generation
-
Model Variant
R
Model Trim
-
VIN
SA9BUNCB1ML211010
Mileage
42 mi
Originality
Original & Highly Original
Engine
2.5L I4
Transmission
Automatic
Drive Type
Rear Wheel Drive (RWD)
Vehicle Type
Automobile
Body Style
Open Top
Driver Side
Center
Doors
N/A
Color Group (Ext)
Gray
Color Group (Int)
Black

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About this Seller

ISBK

verified
house Denver, CO

As an extension of their core dealership, ISBK offers specialized consignment services for rare and distinctive vehicles, connecting discerning buyers with exceptional automobiles defined by their history, craftsmanship, and provenance.

For Sale
Historical Listings
Joined
2026
Vehicle information is provided by the seller or other third parties; CLASSIC.COM is not responsible for the accuracy of such information.