S3Very High Compression Cylinder Head Insert Black

ST-K-IN-416AA S3 is the specialist in Trial and Enduro parts. Innovation and high quality are the key words guiding the design of the elements that will make a difference. Tested in all conditions, the S3 products are at the cutting edge of technology and equip the best riders and trial teams.



It uses the best alloys available, to obtain a better output & more traction. The advantage of these heads is that they can hold more water and have thicker walls which helps with the cooling rate, thus improving slightly low revs power.



It uses the best alloys available, to obtain a better output & more traction.
Forging them eliminates the hot spots found on casted heads.
Ensure a better cooling rate.


Very High Compression : This is designed for use at high altitude or for very specific conditions.

Advantages



Ideal for any high altitude events
A simple change to this insert will enable your bike to function well at altitude of 1500m & above


Different compression Inlet, what changes?


Standard compression (STD): Higher torque and power at low revs. Even though it is similar to the original compression, you will notice the difference.
High compression (A): Better traction and very clean response.
Very high compression ( AA y AAA): Specially for altitudes over 1500m , or special engine preparation.
Low compression: Incredible traction, smooth response,the bests riders use it. It's a delight!