This listing is for the insert only, it does not include the head! This is to suit the TSP head only, not the stock Sherco head.
This is the listing to buy additional compression inserts to suit your TSP Sherco 300 head from the following models:
Sherco 300 2018-on Factory Models
Sherco 300 2019-on Factory Racing Models
The new head was designed for the intention to easily change the head inserts to suit different riding situations, while offering them at a cost effective price.
This insert will come with the inner o-ring required.