1999-2017 Gasgas 300 /rieju Head Cylinder Top End Kit Or Big Bore 250 To 300 Kit

  

Complete S-3 Racing Top End Kit. Also fits GasGas Wild 300. 250 TO 300 BOLT-ON BIG BORE KIT.

Can be used to increase the 250 to a 300. These no longer have the big G logo on the right side anymore since KTM acquired the GasGas name brand. Diamond Honed Nicasil Lined Aluminum Alloy Factory Racing Cylinder (Made in Spain). The Extreme dome is the closest to stock compression and squish distance, corrected squish angle for increased cooling, improved combustion and efficiency, increased torque and horsepower. Or you can opt for the higher compression dome if you are going to stack additional base gaskets to alter/tune port timing for high altitude or running race fuel at low-moderate altitudes.

Increase compression and reduce squish clearance by changing base gasket stack or changing domes available on request. Dome with least clearance gives highest compression. S-3 piston kit by Vertex (light weight for quick revs and less vibration) includes piston, rings, pin, clips, bearing and top end gaskets required for the kits installation.

Minor cosmetic defects to finish and minor casting flaws are common on parts like these. Only true and legitimate claims will be honored by me personally. This head has been on back order for several months and was the last one I had. This kind of fussyness will get him banned/blocked from ordering in the future. Please do not confuse these as additional charges from us.

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