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The H2 Big Kart radiator is the brand new model developed by AF RADIATOR, designed to offer a Maximum engine cooling during the most demanding climatic conditions. It is equipped with the system Bi-flow, allowing a perfect cooling thanks to the Forced recirculation of "U" shaped liquid, combined with a Extra Light radiator mass more important and more efficient than that of the standard H1 model.
This specific design makes it possible to retain a volume of upper water inside the radiator, thus guaranteeing an excellent stability of the engine temperatures, especially during the very hot periods of the year.
Despite its increased cooling capacity, the radiator H2 BIG retains a mastered weight of only 2.25 kg, offering an excellent compromise between thermal performance and total mass of the kart.
The system Bi-flow Ensures optimized circulation of coolant:
Internal recirculation in "U" for homogeneous heat dissipation
Increased liquid retention for upper thermal inertia
Stable engine temperatures over long distances
Efficiency enhanced by extra light, larger than on the H1
The H2 BIG radiator is specially designed for highly solicited engines and high ambient temperatures.
The H2 BIG radiator is designed for Karting engines and recommended for all categories:
OK
Kz
It is widely used and recommended in national and international competitions such as Karting Championships, Italy Cup, Italy Championship, the European Championship, the World Championship, as well as WSK, ACI and FIA events.
Summer
This model is particularly suitable for high heat conditions and very demanding cooling circuits.
Dimensions: 435 × 290 × 48 mm
Weight: 2,25 kg
The H2 Big radiator comes complete with:
Plastic plug
CNC machined aluminum supports, machined in the mass
Supports available in Silver, blue and red
Very high performance engine cooling
Excellent thermal stability by strong heat
Water capacity greater than model H1
Optimized weight despite a larger volume
Excellent value for money
Suitable for high level competition
To ensure optimal performance and maximum reliability, it is recommended to entrust the assembly and commissioning of the radiator to a karting professional, especially in a competitive setting.
| Model | H1 standard | H2 Big | Af2 |
|---|---|---|---|
| Mark | AF RADIATOR | AF RADIATOR | AF RADIATOR |
| Positioning | Versatile | High performance heat | Top of the range |
| Utilization | Competition / training | Intensive competition | High level competition |
| Categories | OK / KZ | OK / KZ | OK / KZ |
| Criterion | H1 standard | H2 Big | Af2 |
|---|---|---|---|
| System | Bi-flow | Bi-flow | Flow optimized by geometry |
| Traffic | "U" recirculation | "U" recirculation | Large radiation surface |
| Radiant heart | Light | Extra Light (increased volume) | High efficiency |
| Goal | Thermal stability | Maximum cooling by high heat | Absolute thermal performance |
| Element | H1 standard | H2 Big | Af2 |
|---|---|---|---|
| Cooling capacity | Very good | Excellent | Very high |
| Temperature stability | Very good | Excellent | Excellent |
| Hot conditions | Good | Very high | Very high |
| Retention of water | High | Very high | Optimized |
| Given | H1 standard | H2 Big | Af2 |
|---|---|---|---|
| Dimensions | 435 × 242 × 48 mm | 435 × 290 × 48 mm | 440 × 300 mm |
| Weight (kg) | 1.94 kg | 2,25 kg | Non-communicated |
| Criterion | H1 standard | H2 Big | Af2 |
|---|---|---|---|
| Aerodynamic study | Optimized | Optimized | Advanced |
| Air resistance | Low | Low | Very weak |
| Adapted high speeds | Very good | Very good | Excellent |
| Equipment | H1 standard | H2 Big | Af2 |
|---|---|---|---|
| Cap | Plastic | Plastic | Included |
| Media | CNC aluminum | CNC aluminum machined in the mass | Standard accessories |
| COLORS MARKETS | Blue / silver / red | Blue / silver / red | Standard |
| Season | H1 standard | H2 Big | Af2 |
|---|---|---|---|
| Spring | Recommended | Recommended | Recommended |
| Summer | Possible | Recommended | Recommended |
| Autumn | Recommended | Recommended | Recommended |
| Winter | Recommended | Possible | Possible |
H1 standard
Lightweight and versatile radiator, ideal for a wide range of climatic conditions, offering excellent value for money.
H2 Big
Radiator designed for strong heat, with a superior water capacity and cooling, recommended for summer competitions and demanding circuits.
Af2
High-end radiator for drivers looking for the Maximum thermal performance and an Aerodynamics Advanced, particularly effective in very high level competition.
To ensure optimum efficiency and maximum reliability, it is advisable to entrust the assembly of these radiators to a karting professional, especially in a competitive setting.
The NGK hood TS1225 blue is a essential accessory Designed for NGK High Performance Candlesincluding models R7282. Fabricated high quality ceramic, this cap guarantees a optimal electrical connection, while offering a Resistance and exceptional durability.
Thanks to his specific design, the NGK TrS1225 blue cap ensures a Perfect transmission of the spark, reducing the risk of loss of signal or parasites, for a Maximum engine performance.
Key that allows you to unscrew the original cap of the Dellorto 30mm VHSH carburettor and unscrew the jet of the maximum for a quick replacement, without having to use screwdrivers or other tools.
The Standard Kart H1 radiator is the brand new radiator fromAF RADIATOR, equipped with a system Bi-flow, allowing a perfect engine cooling thanks to the Forced recirculation in the form of "U" and Radiant Heart Light.
This design has been specially developed to optimize the circulation of coolant, improve heat exchange and maintain stable engine temperatures, even under intensive race conditions.
With this system, the radiator retains more water inside, ensuring high thermal efficiency while maintaining a Reduced weight of only 1.94 kg.
The rear brake disc OTK Ø180x13mm self-ventilated BWD is a high-end component, specially designed for Group Karts OTK from 2025 (Tony Kart, Kosmic, Redspeed, virtually known, Carlos Sainz, Gillard, etc.). This disc self-ventilated offers a optimal braking powera exceptional durability and an Resistance to thermal and mechanical stresses, essential for competitive performance.
Made in Treated and treated steelthis disc is Optimized for active cooling, thanks to his Integrated ventilation fins, which allow a rapid dissipation of heat. This guarantees a Constant and reliable brakingeven during the most intense sessions.
Oil Xeramic 2T Kart Racing Castor is a high-tech oil specifically designed for the optimal lubrication of two-weather karting engines, air cooling or water. Developed in collaboration with the best engine manufacturers and approved CIK, this oil is ideal for competitions involving high speed loads and high temperatures. Synthetic ingredients and additives have been carefully chosen to ensure optimal lubrication and very long-lasting performance.
The 50mm x 100 rear wheel hub - 8a hq birelart is a high-end component, specially designed for Birelart Chassis, RicCiardo, Charles Leclerc, Kubica and LGK. This hub double clamping offers a Ultra-secure fixation the rear wheel, guaranteeing a optimal stability and an exceptional durabilityeven in the most demanding conditions of competition.
Made in High strength aluminum alloy, this hub is light, robust and precise, ensuring a optimal power transmission and an Vibration reduction. His Double clamping system eliminates any risk of loosening or playing, which is crucial for the security and the performance on the track.
The H2 Big Kart radiator is the brand new model developed by AF RADIATOR, designed to offer a Maximum engine cooling during the most demanding climatic conditions. It is equipped with the system Bi-flow, allowing a perfect cooling thanks to the Forced recirculation of "U" shaped liquid, combined with a Extra Light radiator mass more important and more efficient than that of the standard H1 model.
This specific design makes it possible to retain a volume of upper water inside the radiator, thus guaranteeing an excellent stability of the engine temperatures, especially during the very hot periods of the year.
Despite its increased cooling capacity, the radiator H2 BIG retains a mastered weight of only 2.25 kg, offering an excellent compromise between thermal performance and total mass of the kart