[Clay]

Originally Posted by noobi

The replica bikes come with an aftermarket S3 head, which has interchangeable inserts to alter compression. http://www.trialendurodirect.com/pro...nufacturers=15

Sorry. Noobi is correct. The bikes have an S3 head with interchangeable inserts. I will put one in that lowers the compression and gives more bottom end power and less hit in the middle.