The ULTIMATE® Upgrade Series cylinder head have been CNC manufactured in machine-aluminum and thereafter anodized with a color code for easy recognition. The heads have been designed with double rubber seals to minimize loss of compression from the cylinder. The special ‘trumpet design’ ensures optimal delivery of air to the barrel/BB. Furthermore, the cylinder heads have a powerful built-in rubber band that absorbs the shock from the piston head. Purple for version 3 gearbox. ULTIMATE®’s cylinder parts are designed to give the best possible air compression and durability. For this reason we recommend always using ULTIMATE® cylinder parts and not combining or mixing with other upgrade parts as this can affect the result and performance of the upgrade.
