Cylinder head S3 (300cc) 19-21

S3 Enduro/MX cylinder head kit manufactured from the highest quality aluminum for high quality and long-lasting durability.
The two-piece design eliminates air pockets that normally occur during the casting of the standard cylinder head.
Thicker combustion chamber walls help absorb heat more consistently and dissipate it more efficiently with the coolant.
The forged combustion chamber cover has a higher water volume and is thinner than the original part, making the entire cylinder head lighter than the OEM cylinder head. The cylinder heads eliminate the "hot spots" normally found in cast cylinder heads. All of these features improve cooling performance, protecting the engine from overheating and thus increasing component longevity. Anodized and laser-etched for a 100% factory look. Extreme version: Reduced engine compression results in very smooth throttle response, ideal for slippery conditions. Easier control of the motorcycle and longer service intervals. Power version: Higher engine compression results in significantly increased power and more aggressive engine characteristics. Ideal for motocross applications. 

Included in delivery:
1 forged cylinder head cover
1 combustion chamber
5 O-rings for cylinder head cover and combustion chamber

Only suitable for Beta RR 2-stroke sport enduros (300cc) from 2019 to 2021