COBRA 428 Kz Chain - German Manufacturing

Dominate the track with the chain Cobra 428 kz, a transmission of german manufacture designed specifically to meet the extreme requirements of KZ competition karts.

This chain offers a exceptional value for money, combining the robustness of German engineering at a mastered rate. It is the ideal choice for drivers looking for reliable and sustainable performance without compromise on the budget.

Detailed technical characteristics

• Type: 428

• Usage: Karting KZ (Competition)

• NOT (P:) 12.7 mm

• Width between indoor plates (B1:) min. 7.75 mm

• Roller diameter (D1:) max. 8.51 mm

• Pin diameter (D2:) max. 4.45 mm

• Brooch length (B4:) max. 17 mm

• Max. Connection connection (B7:) max. 3.9 mm

• Total width Inner link (B2:) max. 11.3 mm

• Thickness of the plate (TI / TO:) 1.60 / 1.60 mm

• Height of the inner plate (H2:) max. 11.81 mm

• Tensile resistance min. ISO / DIN (FU:) 17.8 kN

• Weight per meter: 0.69 kg

• Support surface (F:) 0.5 cm²

Product information: German quality

Cobra roller channels are the high performance IWIS range, specially adapted to demanding applications. They offer a reliable, economical and versatile solution, perfect for universal use in competition karting.

Thanks to their robust design, their thermally treated components and their high performance "Cobra" initial lubrication, these channels offer excellent value for money and constant performance, even in the most difficult race conditions.

Strengths

• German manufacture: Guarantee of quality, precision and reliability.

• Competition range: Ideal for Kz karts requiring good resistance to break.

• High pre-stretching: More than 30% of the resistance to break after assembly, which significantly reduces the initial elongation on the track.

• Special axes with high hardness: Offer a particularly high resistance to break under load.

• Vemented sockets and rolls: For excellent wear resistance and increased life.

• Thermally treated and oxidized components in black: For better general durability.

• High performance initial lubrication "Cobra:" An anticorrosion lubricant based on superior mineral oil.

📖 The small story: the excellence of German transmission

The history of this channel begins in Germany, at IWIS, a world leader in the technology of transmission chains. If the name "IWIS" is synonymous with innovations for automotive engines (distribution), it is also a reference in the industry.

The "Cobra" range, distributed exclusively by [Votre Marque/Partenaire], a specific application was born: offer a string to the string of Karting of Competition a string that meets the strictest quality standards of the market (German standards DIN), while remaining financially accessible.

The goal was to create a chain capable of collecting the brutal torque of the 125cc gears with box (kz), without breaking and without lying down each other. Thanks to an ultra-precise manufacturing process, special steels and exclusive heat treatment (black oxidation), COBRA 428 Kz has become the essential ally of pilots who want a flawless performance and excellent value for money. This is the assurance of never losing power from the engine output to the wheel.

🔧 Michel's trick

"Michel, our expert transmission, recommends: a well maintained string is the key to not lose power at the wheel. To maximize the life of your Cobra 428 kz channel, clean it carefully after each day of track with a suitable product (Degreaser Chain), then dry it. Before storing it or reassemble it, lubricate it generously with a grease or wax for high quality chain to protect the rollers and the axes of corrosion and wear. Also consider controlling Regularly the condition of your pinion and your crown; a new string will wear out very quickly on a used transmission.

⚠️ Security Council: Always check the editing direction of your quick fastener. The open end of the staple must be oriented counterclockwise to prevent it from accidentally opening on the track. A broken chain can be dangerous.

Order your Cobra 428 KZ channel now on Magickart.fr for efficient and durable transmission. Fast shipping.

❓ FAQ: your frequent questions

Q: Is the Cobra 428 kz chain adapted for other categories than KZ ?A: YES I DO. Although specifically designed for the high stresses of KZ, its step of 428 and its high tensile strength (17,8 kn) make it perfect for the majority of the 125cc direct karts (X30, Rotax Max, OK, etc.) using a transmission 428.

Q: Is the chain delivered with a quick fastener ?A: YES I DO. The Cobra 428 kz chain comes with a quick fastener (junction link) of staple type, compatible with step 428. Additional quick fasteners are available as an option on our site.

Q: How many links do I need for my kart ?A: The number of links depends on your pinion, of your crown and the length of your chassis (engine adjustment.) For a standard kart kz, you usually need a chain of 114 to 120 links. We recommend counting the links of your old chain or order a longer string that you will cut at the right dimension with a drift-chain.

Q: How often should I change my channel ?A: It depends on your use (number of turns, maintenance.) In competition, a high-level driver changes chain all 2-3 race weekends to ensure maximum performance and avoid any risk of case due to metal fatigue. For leisure, regular control (game, hard point) and a cleaning / lubrication after each outlet allow you to extend its life over a complete season.

📋 Product Information (GPSR) & Technical Summary