Insert van S3 voor de cilinderkop van de Beta trial, passend op de standaard cilinderkop. De 'Low Compressie variant is leverbaar voor de 250cc en 300cc 2T modellen. (Low Compression insert : Reduces engine compression for a very smooth response. Makes the bike easier to control and puts less stress on the motor. Perfect for slippery conditions. Advantages : Ideal for slippery terrain Easier to control the power Makes the bike smoother and more progressive Used by the top professional riders)

De 'High compressie variant is leverbaar voor de 125cc modellen vanaf 2010, de 250cc en 300cc 2T modellen. (High compression (A): Possibility to add another gear, better traction and very clean response.)