Maintain the sound and thermal performance of your silencer with this high-quality 450 mm rockwool refill kit.

Offers excellent resistance to heavy mechanical loads thanks to a high-performance design adapted to 2-stroke off-road engines.

Maintains optimum compression, improves engine performance and ensures longer service life in intensive use.

Improves compression, engine responsiveness and reliability while reducing friction and wear in intensive motocross or enduro use.

Improves compression, engine responsiveness and reliability while maintaining consistent performance in intensive motocross or enduro use.

Offers excellent resistance to heavy mechanical loads thanks to a high-performance design adapted to modern 2-stroke engines.

Offers excellent resistance to heavy mechanical loads thanks to a high-performance design adapted to modern 2-stroke engines.

Improves compression, engine responsiveness and reliability while reducing friction and wear in intensive motocross or enduro use.

Improves compression, engine responsiveness and reliability while reducing friction and wear in intensive use or competition.

Offers excellent resistance to high mechanical loads thanks to a high-performance design adapted to 2-stroke mini motocross engines.

Offers excellent resistance to heavy mechanical loads thanks to a high-performance design adapted to modern 2-stroke engines.

Improves compression, engine responsiveness and reliability while reducing friction and wear in intensive motocross or enduro use.