Airtech Studios – ICS TDC Top-Down-Centre Hop-up Converter – ICS Metal Rotary
£12.99
AIRTECH TDC Hop-up Converter changes the standard hop arrangement in ICS metal rotary chambers to a top-down-centre adjustment that presses the nub down from above. A job for anyone rebuilding or tuning the hop-up internals of an ICS replica.
In stock
Free Shipping on Orders Over £200
- UK Based
- Over 15 Years in Business
- No-Hassle Returns
- 5 Star Customer Service
Description
AIRTECH ICS TDC Top-Down-Centre Hop-up Converter is an internal component intended for ICS metal rotary hop-up units. It alters the way hop is applied inside the chamber: rather than a conventional arm bearing from one side, the TDC layout puts the adjustment directly above the barrel and presses the nub straight down onto the top of the BB as it passes.
That vertical arrangement is what the Top-Down-Centre name refers to, and it is what this converter introduces to an ICS metal rotary unit. It is a small internal part, so it suits someone already working inside the hop chamber and gearbox — fitting it belongs with a build, a rebuild or a hop-up overhaul rather than a quick external adjustment.
It is designed for compatible ICS metal rotary hop-up units, so check the internals of your own replica before ordering.
- Top-Down-Centre hop adjustment
- For ICS metal rotary hop-up units
- Internal part for builds and rebuilds
- Pressure applied from directly above the BB
Additional information
| Type | Hop-Up Arm |
|---|







