THE KTM X-BOW GT4 – WORLDWIDE "READY TO RACE"

KTM X-Bow GT4

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KTM X-Bow GT4

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The development of the KTM X-BOW GT4 was exclusively carried out together with highly specialized companies. In addition to the monocoque, which came from the Italian motor racing specialist Dallara, the German racing car constructor Reiter Engineering and the engineering service provider KTM Technologies both played decisive roles in the development process. The unique design was once again the work of KISKA. The car is unrivaled in terms of efficiency, cost-effectiveness and safety. It can be deployed all over the world, and above all, it is specifically designed to suit the future GT4 class. It is also low in price when compared to other models, and there are no additional hidden costs!
  • PHO_BIKE_90_RE_x-bow-gt4-2018-90-re_#SALL_#AEPI_#V1.png
    PHO_CAR_PERS_REVO_X-BOW-GT4-2018-PERSP-LI_#SALL_#AEPI_#V1.png
The development of the KTM X-BOW GT4 was exclusively carried out together with highly specialized companies. In addition to the monocoque, which came from the Italian motor racing specialist Dallara, the German racing car constructor Reiter Engineering and the engineering service provider KTM Technologies both played decisive roles in the development process. The unique design was once again the work of KISKA. The car is unrivaled in terms of efficiency, cost-effectiveness and safety. It can be deployed all over the world, and above all, it is specifically designed to suit the future GT4 class. It is also low in price when compared to other models, and there are no additional hidden costs!
  1. Engine & Drivetrain
  2. Chassis
  3. Aerodynamics & Bodywork
  4. Safety
  5. Ergonomics & Comfort

01. Engine & Drivetrain

Rear frame

The wheelbase of the KTM X-BOW GT4 has been extended by as much as 17cm to suit the requirements of international customer racing. The significant change achieved by extending the rear frame means the vehicle is faster in the corners, and has improved rear axle driving stability. This, in turn, is now constructed of tubular steel instead of aluminum, which increases the torsional rigidity.

Transmission

Pure GT3 technology for use in GT4 races: The sequential 6-gear Holinger transmission not only allows gear changes in the area of a millisecond range but also offers an automatic change-up, and double-declutching when changing down. Gear changes are carried out via the paddles attached to the steering wheel. Despite this sophisticated technology, the Holinger transmission weighs 35 kg less than a standard gearbox.

Driveshaft

The KTM X-BOW GT4 comes with two different versions of the drive shaft. The standard drive shafts are designed for sprint races, while the “HD" drive shafts have been specially developed for endurance racing, or for races from a standing start.

Rear frame

The wheelbase of the KTM X-BOW GT4 has been extended by as much as 17cm to suit the requirements of international customer racing. The significant change achieved by extending the rear frame means the vehicle is faster in the corners, and has improved rear axle driving stability. This, in turn, is now constructed of tubular steel instead of aluminum, which increases the torsional rigidity.

Transmission

Pure GT3 technology for use in GT4 races: The sequential 6-gear Holinger transmission not only allows gear changes in the area of a millisecond range but also offers an automatic change-up, and double-declutching when changing down. Gear changes are carried out via the paddles attached to the steering wheel. Despite this sophisticated technology, the Holinger transmission weighs 35 kg less than a standard gearbox.

Driveshaft

The KTM X-BOW GT4 comes with two different versions of the drive shaft. The standard drive shafts are designed for sprint races, while the “HD" drive shafts have been specially developed for endurance racing, or for races from a standing start.

02. Chassis

Monocoque

The unique carbon monocoque was specially developed for motorsport and is drawn directly from a Dallara Formula 3 chassis. The high side flanks are much more effective in the event of a side-ways collision than any other technical solution. The front crash box is connected to the monocoque and fulfills Formula 3 and sports car standards. The carbon monocoque itself has a four-layer, double-walled construction, which, from the position of the driver is fitted with a DMSB-homologated roll bar. It is also possible to mount a headrest, which is according to sportscar regulations, or even equivalent to those of the LMP. The KTM X-BOW GT4 sets new standards in GT racing safety standards with this unique combination of elements.

Suspension

The pushrod version of the front axle remains unchanged on the KTM X-BOW GT4, but the accompanying wheel bars, triangular crossbars, and dampers have been completely redesigned. All pivot- and attachment points are now stored in a Uniball. The WP spring and damper elements are adapted to the increased weight of the vehicle and also meet the demands of the changes made for exclusive use on racing circuits.

Tyres

KTM Sportcar GmbH continues to count on its reliable partner Michelin for this model of the KTM X-BOW. The KTM X-BOW GT4 comes from the factory fitted with the same Michelin slicks that are already used in the X-BOW Battle, in the dimension 27/65-18 (S5A) in the front and 30/68-18 (S7L) on the rear.

Racing suspension

The racing suspension by WP is adjustable in both rebound and compression damping (high and low speed). The modified damper characteristics combined with the significant increase in damping power leads to an increased roll stiffness at the beginning and in the middle sections of corners. In addition, high-performance bearings at the connection points lead to a minimization of the slip-stick effect and support a highly precise spring action.

Springs of WP suspension

Together with chassis and test-drive guru Loris Bicocchi, WP Suspension was involved in developing the springs and dampers for the KTM X-BOW from the very beginning. This expertise and the accumulated experience with the set-up of the KTM X-BOW are perceptible in the "GT4" from the very first moment.

O.Z. magnesium racing rims

The O.Z magnesium rims are not only extremely light, they are also very resistant, which is a definite advantage after making contact with other competitors during a race.

Air-jack system

Whether you’re changing wheels or replacing shock absorbers – all work requiring the vehicle to be raised can be performed simply and swiftly with the air-jack system. Jobs on the vehicle that would have taken much longer can be completed quickly. The system is operated with compressed air and designed specifically for use at racetracks.

Monocoque

The unique carbon monocoque was specially developed for motorsport and is drawn directly from a Dallara Formula 3 chassis. The high side flanks are much more effective in the event of a side-ways collision than any other technical solution. The front crash box is connected to the monocoque and fulfills Formula 3 and sports car standards. The carbon monocoque itself has a four-layer, double-walled construction, which, from the position of the driver is fitted with a DMSB-homologated roll bar. It is also possible to mount a headrest, which is according to sportscar regulations, or even equivalent to those of the LMP. The KTM X-BOW GT4 sets new standards in GT racing safety standards with this unique combination of elements.

Suspension

The pushrod version of the front axle remains unchanged on the KTM X-BOW GT4, but the accompanying wheel bars, triangular crossbars, and dampers have been completely redesigned. All pivot- and attachment points are now stored in a Uniball. The WP spring and damper elements are adapted to the increased weight of the vehicle and also meet the demands of the changes made for exclusive use on racing circuits.

Tyres

KTM Sportcar GmbH continues to count on its reliable partner Michelin for this model of the KTM X-BOW. The KTM X-BOW GT4 comes from the factory fitted with the same Michelin slicks that are already used in the X-BOW Battle, in the dimension 27/65-18 (S5A) in the front and 30/68-18 (S7L) on the rear.

Racing suspension

The racing suspension by WP is adjustable in both rebound and compression damping (high and low speed). The modified damper characteristics combined with the significant increase in damping power leads to an increased roll stiffness at the beginning and in the middle sections of corners. In addition, high-performance bearings at the connection points lead to a minimization of the slip-stick effect and support a highly precise spring action.

Springs of WP suspension

Together with chassis and test-drive guru Loris Bicocchi, WP Suspension was involved in developing the springs and dampers for the KTM X-BOW from the very beginning. This expertise and the accumulated experience with the set-up of the KTM X-BOW are perceptible in the "GT4" from the very first moment.

O.Z. magnesium racing rims

The O.Z magnesium rims are not only extremely light, they are also very resistant, which is a definite advantage after making contact with other competitors during a race.

Air-jack system

Whether you’re changing wheels or replacing shock absorbers – all work requiring the vehicle to be raised can be performed simply and swiftly with the air-jack system. Jobs on the vehicle that would have taken much longer can be completed quickly. The system is operated with compressed air and designed specifically for use at racetracks.

03. Aerodynamics & Bodywork

Diffusor

Air flows optimally into the rear diffuser, which ensures distribution of pressure on the underbody thanks to its asymmetric design. It generates a large part of the downforce.

Underbody

One look underneath the KTM X-BOW GT4 reveals the three-piece, completely flat, racing underbody derived from formula racing vehicles.

Headlights

There are two different versions of headlights available for the KTM X-BOW GT4. On the one hand the standard system, on the other the very bright lights which ensure optimum visibility in the dark at long distance races.

Diffusor

Air flows optimally into the rear diffuser, which ensures distribution of pressure on the underbody thanks to its asymmetric design. It generates a large part of the downforce.

Underbody

One look underneath the KTM X-BOW GT4 reveals the three-piece, completely flat, racing underbody derived from formula racing vehicles.

Headlights

There are two different versions of headlights available for the KTM X-BOW GT4. On the one hand the standard system, on the other the very bright lights which ensure optimum visibility in the dark at long distance races.

04. Safety

Roll bar

The KTM X-BOW GT4 comes with a DMSB-certified roll-over cage, supported at the same roll hoop positional points as those on the open top models – at the front up to the A-column, and at the rear as far as the rear suspension geometry.

Brakes

The large AP racing brakes, specially developed for Reiter Engineering and KTM, offer an incomparable braking effect due to the relatively light weight of the KTM X-BOW GT4. Therefore brake discs and brake pads last longer than those on conventional GT4 racing cars. This also reduces the maintenance costs.

Seat belts

The FIA-homologated 6-point belt is specially adapted and optimized for the usage in the KTM X-BOW. Thanks to the new lap belt adjustment- and fastener-system a quick and easy belt fastening resp. -tightening is possible. The shoulder strap is ready for HANS® System.

Crashbox

The crash box at the nose of the vehicle provides additional safety. Thanks to its carbon-aluminium sandwich construction, it even complies with the strict safety regulations of the FIA GT and Formula 3.

Technological leadership

Four layers of carbon fibre, epoxy resin, elaborate handiwork, autoclave technology: They all come together to produce the twin-wall, two-part, extremely lightweight, carb on monocoque, which is manufactured by composite-fibre specialist Wethje in Germany. The result is a carbon-fibre construction that ensures the highest levels of safety, but only weighs 80 kg – with an unbelievably high torsional stiffness of 35.000 Nm/ rad.

Adjustable brake balance

Allows adjustment of the brake balance between front and rear brake circuits. Helps to find the optimum vehicle setup for driver’s personal driving style and the respective racetrack. The balance bar is adjusted with a shaft, thereby increasing or reducing pressure in the respective brake circuit.

Racing ABS

The racing ABS is especially configured for use in the KTM X-BOW and results in a huge improvement in the braking performance. The actual wheel speed is evaluated during the braking operation and in case of deviation of the calculated value the ABS intervenes and corrects the braking force at each wheel. This automatic control of the brake distance is ideally optimized and the vehicle stability and maneuverability are enormously improved during braking in various weather conditions. The intervention can be adjusted by using a 10-stage regulator to suit the weather conditions, race tracks, driving style or it can also be completely deactivated.

70 liter saftey tank

The safety tank of the KTM X-BOW GT4 has a fuel tank homologated by the FIA and is designed according to the FT3 standard. It is also equipped with a quick refueling system. The basis is the 70-liter version of the safety tank, which was specially developed for sprint races.

LMP Headrest

The vehicle comes with a headrest that complies with LMP2 regulations and is designed according to DMSB specifications for the use of the KTM X-BOW GT4 on the Nürburgring Nordschleife.

Fire extinguisher system

The OMP fire extinguisher system is electronically activated and consists, amongst other things, of a 4,25 ltr. container, tubing, nozzles, a control box and an external push button. The system is homologated due to FIA 2000 standard.

Rain light

FIA-certified rain light, withstands extreme racing conditions, yet small and light. The rain light is to be connected with the serial rear fog-light button at the steering wheel.

Roll bar

The KTM X-BOW GT4 comes with a DMSB-certified roll-over cage, supported at the same roll hoop positional points as those on the open top models – at the front up to the A-column, and at the rear as far as the rear suspension geometry.

Brakes

The large AP racing brakes, specially developed for Reiter Engineering and KTM, offer an incomparable braking effect due to the relatively light weight of the KTM X-BOW GT4. Therefore brake discs and brake pads last longer than those on conventional GT4 racing cars. This also reduces the maintenance costs.

Seat belts

The FIA-homologated 6-point belt is specially adapted and optimized for the usage in the KTM X-BOW. Thanks to the new lap belt adjustment- and fastener-system a quick and easy belt fastening resp. -tightening is possible. The shoulder strap is ready for HANS® System.

Crashbox

The crash box at the nose of the vehicle provides additional safety. Thanks to its carbon-aluminium sandwich construction, it even complies with the strict safety regulations of the FIA GT and Formula 3.

Technological leadership

Four layers of carbon fibre, epoxy resin, elaborate handiwork, autoclave technology: They all come together to produce the twin-wall, two-part, extremely lightweight, carb on monocoque, which is manufactured by composite-fibre specialist Wethje in Germany. The result is a carbon-fibre construction that ensures the highest levels of safety, but only weighs 80 kg – with an unbelievably high torsional stiffness of 35.000 Nm/ rad.

Adjustable brake balance

Allows adjustment of the brake balance between front and rear brake circuits. Helps to find the optimum vehicle setup for driver’s personal driving style and the respective racetrack. The balance bar is adjusted with a shaft, thereby increasing or reducing pressure in the respective brake circuit.

Racing ABS

The racing ABS is especially configured for use in the KTM X-BOW and results in a huge improvement in the braking performance. The actual wheel speed is evaluated during the braking operation and in case of deviation of the calculated value the ABS intervenes and corrects the braking force at each wheel. This automatic control of the brake distance is ideally optimized and the vehicle stability and maneuverability are enormously improved during braking in various weather conditions. The intervention can be adjusted by using a 10-stage regulator to suit the weather conditions, race tracks, driving style or it can also be completely deactivated.

70 liter saftey tank

The safety tank of the KTM X-BOW GT4 has a fuel tank homologated by the FIA and is designed according to the FT3 standard. It is also equipped with a quick refueling system. The basis is the 70-liter version of the safety tank, which was specially developed for sprint races.

LMP Headrest

The vehicle comes with a headrest that complies with LMP2 regulations and is designed according to DMSB specifications for the use of the KTM X-BOW GT4 on the Nürburgring Nordschleife.

Fire extinguisher system

The OMP fire extinguisher system is electronically activated and consists, amongst other things, of a 4,25 ltr. container, tubing, nozzles, a control box and an external push button. The system is homologated due to FIA 2000 standard.

Rain light

FIA-certified rain light, withstands extreme racing conditions, yet small and light. The rain light is to be connected with the serial rear fog-light button at the steering wheel.

05. Ergonomics & Comfort

Multifunctional steering wheel

The infrared-controlled, detachable, multi-function steering wheel is adjustable in height and depth. It is covered with high-quality raw leather and therefore offers perfect grip while racing under extreme conditions. The paddles that drive the Holinger sequential six-speed gearbox are also mounted on the steering wheel.

Multifunctional steering wheel

The infrared-controlled, detachable, multi-function steering wheel is adjustable in height and depth. It is covered with high-quality raw leather and therefore offers perfect grip while racing under extreme conditions. The paddles that drive the Holinger sequential six-speed gearbox are also mounted on the steering wheel.

Detalles Técnicos

Motor

  • Cambio Caja de cambios secuencial Holinger
  • Estructura Motor TFSI de 2 litros
  • par motor máx. depende del BOP, hasta 500+ Nm
  • Válvulas 16, DOHC
  • Potencia depende del BOP, hasta 360+ Ps

Parte Ciclo

  • Altura del centro de gravedad 395 mm
  • Distribución del peso (delante / detrás) 45:55
  • Perímetro de giro 18 m
  • Capacidad del depósito (aprox.) 70 o 120 litros (depósito de seguridad FT3)
  • Distancia entre ejes 1.670 / 1.670 mm
  • Fuerza de resistencia aerodinámica a 200 km/h > 400 kg
  • Peso seco a partir de 975 kg (depende del BOP)
  • Dimensiones 4.112 x 1.933 x 1.140 mm
  • Transmisión Accionamiento de rueda trasera con diferencial de bloqueo ajustable
  • Aceleración lateral >2.0 g
  • Aceleración 0-100 km/h 3,9 s
  • Velocidad máxima 265 km/h
  • Distancia entre ejes 2599 mm