Adaptable valve for motors TM K9 and KZ10 is an essential part of the 125 cc gearbox karting engine intake system. It replaces the original blade of the valve box and makes it possible to optimize the transition from the air-fuel mixture to the engine crankcase, improving the responsiveness and efficiency of the engine.

Made of high-strength carbon, this valve offers excellent opening flexibility while maintaining good durability, even at high speed. It is an ideal solution for the maintenance or repair of TM engines used in karting competition.

Valve function in KZ engine

In a 2-stroke karting engine, the valves work like a non-return valve. They open under the effect of the depression created by the piston to let the air-fuel mixture into the engine housing, then close immediately to prevent the mixture from returning to the carburettor.

This system allows:

• better filling of the engine housing

• a more frank acceleration

• faster engine response

• improved engine speed stability

KZ TM engines typically use carbon slats to achieve quick opening and resistance to the very high speeds of competitive karting engines.

Compatibility

This adaptable valve is compatible with several TM Racing engines:

• TM K8

• TM K9 / K9B / K9C

• TM KZ10 / KZ10B / KZ10C

• TM KZ R1

• TM KZ R2

These engines use a valve box located between the carburettor and the engine crankcase, the central element of the intake system.

Technical specifications

• Type: 2-stroke engine valve blade

• Material: high strength carbon

• Usage : karting competition KZ

• Compatibility: TM K9 / KZ10 engines and derivatives

• Mounting: direct replacement in the original valve box

• Thickness according to version: about 0.28 to 0.34 mm

• Sale: sold individually

The different thicknesses allow a compromise between opening flexibility and high engine speed resistance.

Benefits

• improves engine responsiveness

• optimizes the intake of the air-fuel mixture

• promotes acceleration at the turn exit

• simple and fast mounting

• compatible with the original TM valve box

Maintenance

Carbon valves are wear parts. It is recommended that their condition be monitored regularly to verify the absence of:

• of cracks

• of deformation

• loss of leak

A worn valve can cause power loss, difficult start or unstable carburation.