Callaway Competition

  • Ernst Wöhr
  • Giovanni Ciccone
  • GT3-R
  • Designs, constructs, homologates and sells Corvette C7 GT3-R’s, under exclusive authorization by Chevrolet Division of General Motors.
  • Accomplished in global GT racing series, including 24 Hours of Le Mans, SCCA, FIA GT, GT Sprint Italy, Australian GT, Super GT (Japan) and ADAC GT Masters series.
  • Currently manages Callaway Competition ADAC GT Masters race team; recognized as “one of the most successful racing teams in ADAC GT Masters history”.
  • Provides complete race car preparation and set-up services.
  • Specializes in the development and optimization of vehicle aerodynamics.
  • Designs and fabricates complex components for competition applications, specializing in advanced composite technology.

Motorsports has always played a crucial role at Callaway. The marque possesses a legendary record at many of the world’s great race tracks: Spa, Suzuka, Paul Ricard, Nürburgring Nordschleife and GP courses, Monza, Vallelunga, Hockeheim, Daytona, Lime Rock, Road Atlanta, Sears Point, Laguna Seca, Charlotte, Texas World Speedway, Watkins Glen and Mugello.

Callaway’s motorsports venture was created in 1985 under the name “Wöhr & Ciccone”. Since its founding, the Leingarten, Germany company has specialized on body production and race car construction. In 1988, company business expanded to include distribution of Callaway Corvettes in Europe. Callaway Competition GmbH got its name in 1994. Since then, racing Corvettes developed and built in Leingarten for ADAC GT Masters and other series have achieved great success. Callaway Competition is the oldest team in ADAC GT Masters, and started in 1993 with a Corvette C4 at the ADAC GT Cup. Since 2006, more than twenty GT3 Corvettes have been built in Leingarten.

Currently, Callaway Competition campaigns its own GT3 race team and sells Corvette GT3 race cars and support parts and equipment to leading race teams throughout Europe. GM has expanded Callaway’s exclusive authorization to homologate, construct and sell Corvette GT3 race cars worldwide, including North America.

Development of the Callaway Corvette C7 GT3-R began in mid-2014 on CAD, under the supervision of Ernst Wöhr and Giovanni Ciccone, with technically-relevant parts designed by Mike Gramke and Uwe Hoffmann. The first Callaway Corvette C7 GT3-R’s set new standards in the ADAC GT Masters series.

The body and dashboard were CAD-designed by Paul Deutschman, Callaway’s designer of over 30 years, of Deutschman Design – Montreal, Canada. By the end of 2014, vehicle design was established and, in the spring of 2015, prototype construction commenced at Callaway’s German facility.

Callaway Competition supplied dimensional data for specialist suppliers who milled forms for body parts. The carbon fiber parts from these forms were chiefly manufactured in Leingarten, with some produced by friendly firms.

The only stock components retained from the Corvette C7 are the chassis, which is reinforced with the roll cage, the lower control arms, the upper half of the rear bumper and the tail lights. The naturally aspirated 6.2-liter engine was carried over from the Callaway Corvette Z06.R GT3 with minor changes. Other parts were newly developed and manufactured, with the major part of the technical components from aluminum and carbon fiber hand-built in Leingarten.

The front spoiler, diffuser and rear wing aerodynamic components were developed and implemented in CAD by Paul Schreiber and Alex Koppe. The shape and the profile of the rear wing corresponds to all the latest developments in aerodynamics.

Callaway Competition partners Ernst Wöhr and Giovanni Ciccone utilized all their race car building experience in the construction of the Corvette C7 GT3-R.

to Callaway Competition Photo Gallery

ADAC GT Masters Race Schedule – 2021

Date Track City, Country
May 13-15 Motorsport Arena Oschersleben Oschersleben, Germany
June 10-12 Red Bull Ring Red Bull Ring, Austria
July 8-10 Circuit Zandvoort Zandvoort, Netherlands
August 6-8 Nürburgring CANCELED Nürburg, Germany
September 9-11 DEKRA Lausitzring Klettwitz, Germany
September 30 – October 2 Sachsenring Hohenstein-Ernstthal, Germany
October 21-23 Hockenheimring Baden-Württemberg Hockenheim, Germany

ADAC GT Masters Race Videos – 2020

Race 1 – November 7, 2020
Race 2 – November 8, 2020
DEKRA Lausitzring II
Race 1 – October 31, 2020
Race 2 – November 1, 2020
Red Bull Ring
Race 1 – October 17, 2020
Race 2 – October 18, 2020
Race 1 – October 3, 2020
Race 2 – October 4, 2020
Race 1 – September 19, 2020
Race 2 – September 20, 2020
Race 1 – August 15, 2020
Race 2 – August 16, 2020
DEKRA Lausitzring I
Race 1 – August 1, 2020
Race 2 – August 2, 2020
For 2017-2019 videos, click HERE.
For ADAC GT Masters’ website and more ADAC GT Masters series news, click HERE.

Callaway Competition at Le Mans 1995

Callaway Racing at Le Mans 1995

The greatest moment in the history of Callaway’s LM GT cars…

Crossing the finish line at Le Mans 1995.

During the last lap, Frank Jelinski, behind the wheel of Car No. 73, waited for Rocky Agusta in Car No. 004 so the two Callaways could cross the finish line together.

Callaways finished P2 and P3 in GT2, P9 and P12 overall.

Motorsport Support Services

Motorsports SupportMotorsports has always played a crucial role at Callaway. We enjoy current, successful experience in endurance sports car racing that allows us to support aggressive race teams that want to win.

Callaway enjoys a legendary record at many of the world’s great race tracks: Spa, Suzuka, Paul Ricard, Nurburgring Nordschleife and GP courses, Monza, Vallelunga, Hockeheim, Daytona, Lime Rock, Road Atlanta, Sears Point, Laguna Seca, Charlotte, Texas World Speedway, Watkins Glen and Mugello.

Currently, Callaway Competition campaigns its own GT3 race team and sells Corvette GT3 and GT4 race cars and support parts and equipment to leading race teams throughout Europe.

Race Car Fabrication Services

Fabrication Services

Artful fabrication is a key part of presenting a mechanical design. At Callaway, we’re versed in all the traditional fabrication arts and recognized for the handsome execution of our designs both above and under the hood. While we’re employing advanced fabrication techniques at our California and Connecticut facilities, we are building world-class, champion GT race cars at Callaway Competition. Constructing these machines requires forming, cutting, machining, welding with a wide variety of metals. Callaway Competition’s expertise in carbon fiber and other composite materials also allows them to produce lightweight, strong structural components and body panels. Traditional German craftsmanship combined with innovative, state-of-the-art technologies results in clever, efficient fabrication solutions.

The Callaway Corvette C7 GT3-R, one of the most powerful, successful and reliable GT race cars, is built by Callaway Competition GmbH in Leingarten, Germany. There is no factory support in building racing Corvettes for GT3 competition, so each detail is developed by the Callaway Competition team, directed by General Manager, Ernst Wöhr. It all starts with a completely-stock Corvette C7 road car. After removing all of the interior and stripping the car down to the bare aluminum chassis, the car gets its steel roll cage. Since the FIA steel roll cage cannot be welded to the Corvette’s aluminum frame, the roll cage is bolted and bonded to the chassis on steel supports. Hundreds of man-hours are spent converting the world-class road car into a world-class GT racer. Most of the carbon fiber parts on the car are hand-made at Callaway Competition to ensure the best possible product quality.

Pre-Owned Callaway Corvette Race Car Sales

Callaway Race cars
Full Spec Sheets For GT3 and GT4 race cars are available on request at:

to Callaway Race Cars available now

Callaway Corvette C7 GT3-R Equipment


  • 6.2L, 381 cid LS-series aluminum V8, 4.060” x 3.625” bore and stroke
  • Engine management mapped for 98 (RON) octane unleaded fuel
  • 540 to 600 bhp and 470 to 500 lb-ft torque, depending on intake restrictor
  • Dry sump lubrication system, 14 L capacity, with quick fill capability and oil level sensor
  • Bosch electronic engine management, with multi-point sequential port injection
  • Drive-by-wire throttle actuation
  • Motorsport-spec engine wiring harness
  • Stainless steel exhaust system with tri-y headers, side pipe mufflers, catalytic converters


  • Rear-mounted X-Trac 6 speed sequential gearbox, MEGA-line paddle shift actuator
  • Sachs racing clutch
  • Gearbox-mounted starter, clutch and alternator
  • Plate and viscous coupling differential
  • Carbon driveshaft
  • Tripod joint halfshafts
  • Transaxle cooling system

Driver Support Equipment

  • Bosch Racing Anti Lock braking system, adjustable
  • Bosch Traction Control, adjustable
  • MEGA-line paddle shift system
  • Adjustable power steering assistance
  • Multi-function steering wheel
  • Pit speed monitoring functionality
  • Launch control system
  • Pit timing system
driver support


  • Brembo Endurance 6-piston front and 4-piston rear calipers, CNC-machined, with titanium pistons and radiators
  • Brembo Endurance brake discs, 390mm/330mm diameter, grooved and ventilated
  • Driver adjustable pedal box
  • Driver adjustable brake bias
  • Front and rear brake cooling ducts
gt3-r brakes

Chassis and Suspension

  • Reinforced aluminum chassis, with integrated carbon panels
  • Steel safety cage, constructed to FIA specifications
  • 120 L (31.7 gal) FIA-FT3 fuel cell, spare fuel pump, low fuel level indicator
  • Pneumatic jack system (optional LH or RH side)
  • Integrated fuel filler into the rear brake cooling duct
  • Low friction, rose-jointed, independent double wishbone configuration, front and rear
  • Adjustable ride height, camber, toe, rollcenter
  • Machined aluminum uprights
  • Central wheel locking system
  • Coil-over springs, adjustable Bilstein racing dampers, integrated ride height adjustment
  • Adjustable front and rear anti-roll bars
fuel filler
suspension dwg


  • C7 GT3-R body configured for optimum airflow management without road car constraints
  • CAD-designed carbon composite body panels utilizing advanced air management software
  • Fender and hood louvers and extractors
  • Flat underbody and efficient rear diffuser
  • Increased front splitter surface area
  • Adjustable rear wing
  • Integrated side-exit exhaust system

Interior and Safety

  • FIA integrated steel roll cage, with provision for lifting device
  • Driver side door with integrated impact structure
  • FIA Roof-Rescue hatch
  • Quick release doors and door windows
  • FIA-homologated, Racetech advanced racing seat with six-point racing harness
  • Adjustable pedal box and steering wheel position
  • Bosch multi-color trans-reflective dashboard display
  • Backlighted touch panel for electronic controls
  • Motorsport-spec wiring harness
  • Firesense zero360 fire extinguisher system


  • OZ forged aluminum, center lock attachment
  • Front 18” x 12.5”, with 315/680-18 tires
  • Rear 18” x 13”, with 325/705-18 tires

Data Acquisition

  • Bosch Motorsport Data Logger
  • 720 channels, 1 GB memory, up to 1000Hz sampling rate
  • High speed Ethernet download capable
  • WinDarab 7 Light datalogging software
  • GPS based lap timing
  • Sensors include (standard package):
    • Wheel speed FL
    • Wheel speed FR
    • Wheel speed RL
    • Wheel speed RR
    • Brake pressure front
    • Brake pressure rear
    • Brake pressure FL
    • Brake pressure FR
    • Brake pressure RL
    • Brake pressure RR
    • Clutch pressure
    • X/Y acceleration
    • Yaw rate
    • Steering angle
    • Gearbox temperature
    • Oil tank level
    • Low fuel level switch
    • GPS
data acquisition


  • Driver Comfort / Features
    • Large seat option
    • Active seat cooling
    • Active helmet cooling
    • Off-the-jack start

  • Endurance Lighting
    • Additional headlights

  • VLN Kit
    • VLN-type refueling system
    • VLN-type exhaust system
    • Speed limiters
    • Anti-lift strategy
    • Restrictor mapping

  • Service / Maintenance
    • Quick fill bottle, water
    • Quick fill bottle, engine oil
    • Quick fill bottle, gearbox oil
    • Gearbox tooling kit
    • Set-up equipment

  • Additional Data Acquisition
    • WinDarab 7 Expert software
    • Removable USB data storage
    • Damper displacement kit
    • Tire pressure monitoring system
    • Radar-based collision avoidance
    • CAN bus integrated video system
    • Advanced telemetry
    • Sensors on request
roof hatch

For more information regarding pricing, availability, factory race support or any other Corvette C7 GT3-R details, please email Callaway Cars at or call (860) 434-9002.