The Bore Up Premier Cylinder Head Set is designed specifically for the PDI VSR-10 BORE UP system. The set includes two main components: the BORE UP Premier Cylinder and the BORE UP Taper Cylinder Head. The Premier Cylinder is constructed from SUS304, featuring an internal diameter of 23mm (larger than normal and PDI Precision cylinders) with a tight tolerance of ±1/100mm, and is processed with laser welding and fixed by parallel pins.

The BORE UP Taper Cylinder Head is made from CNC-machined SUS303 and is optimized for use with Bore Up cylinders and the HOP UP Chamber Ver.2. Its backside is tapered to improve airflow. Please note that this cylinder head is not compatible with the HOP UP Chamber Ver.1 or the original cylinder. The entire set is exclusively intended for the PDI VSR-10 BORE UP.