O.S. Inner Head 21VB (P) V-Spec 21CTower Stock# LXGRT4 • Manufacturer Stock# 22105100
Quantity Discounts Available
Notes from our tech department:
OS Max .21 VZ-B V-SPEC-T engine
It is the second part of a Two-Part system along with the Outer Head.
This design allows for easier replacment of both the Inner & Outer parts.
One Inner Head, also known as a "buttonhead."
None, item is a stock part
Diameter: 33mm (1.3")