The Z-RAM Powerkit.68 V2 is designed for the Umarex T4E HDB68/TB68 .68 platform, with the product record focusing on the 7.5 J version and also listing 16 J and 40 J variants. The package contains the V2A stainless-steel valve pin and a 2.5 mm Allen key; it is a tuning component, not a guaranteed energy result.
Which HDB68/TB68 versions are named?
HDB68 and TB68 are equivalent names for the same model family when the model number and caliber match. The current Powerkit.68 V2 description names the 7.5 J version as its primary design scope and states that the valve pin can also be used with the 16 J and 40 J variants.
Do not transfer this fit to HDR68/TR68, HDS68/TS68 or HDX68/TX68 because those are different product families. A shared .68 caliber is not a shared valve interface.
What the kit actually changes
The CNC-machined V2A valve pin has a thread shortened by 3 mm and a 2.5 mm hexagonal bore. The product description presents those dimensions as a way to change gas flow while keeping the modification internal and reversible.
The listing describes outputs above 50 J as possible depending on the complete setup and CO2 temperature. That is not a prediction or guarantee for an individual marker. Capsule temperature, seals, tolerances, projectile, barrel and measurement method all affect a chronograph result.
How to make a responsible purchase decision
First identify the exact HDB68/TB68 version. Then decide whether you need maintenance or tuning: a service kit replaces wear parts, while this product changes the valve configuration. Finally, check local law and the permitted use before buying or installing a performance component.
Installation should follow the current Z-RAM product instructions and the marker manufacturer's safety procedure. Work only on a fully unloaded and depressurized marker. If you cannot identify the valve assembly or verify the marker version, use qualified help rather than improvising.
View the HDB68/TB68 Powerkit.68 V2
Z-RAM NEW ! ! Powerkit.68 V2 for Umarex HDB68 TB68 (7,5j Version), export valve V2A (50Joule+)
Why it belongs: This is the exact V2A valve pin package described for the named HDB68/TB68 versions.
Decision boundary: Fit is not a guaranteed Joule result; configuration, temperature and measurement conditions matter.
View the HDB68/TB68 PowerkitRelated Z-RAM platform video
Related Z-RAM Powerkit overview
You may also find this related Z-RAM video useful. This Z-RAM overview includes the HDB68/TB68 platform among several powerkit families; the written product record controls the exact fit and contents.
Watch the Z-RAM video
Separate fit from performance
The useful confirmed decision is that this valve pin belongs to the named HDB68/TB68 family and that the box contains only the pin and Allen key. Any energy figure must be treated as configuration-dependent and verified with a chronograph under documented conditions.
For system-level planning, read the Z-RAM Z-Extension guide without assuming that a chamber component and a valve component produce the same result.
Important Legal Notice
Laws and regulations governing the purchase, possession, installation, modification, and use of the products described on this page vary by country, state, and local jurisdiction and may change. Before purchasing, installing, modifying, or using any product, you are responsible for confirming that it is permitted in your location and for your intended purpose. Product availability or delivery does not mean that purchase, possession, installation, modification, or use is lawful in your jurisdiction. Z-RAM does not provide legal advice, and the information on this page must not be treated as legal advice. If you are unsure, contact the competent local authority or a qualified legal professional.