RetroArms CNC Piston for DSG 9T

The RetroArms CNC piston is specially lengthened, reinforced and significantly lightened for DSG builds. It can also be used in standard gearboxes, but it is optimized for RetroArms DSG gearboxes (6394) and has a precise surface on top for the bearings integrated in them.

Compared with the standard piston, it has a longer body and guides with adjusted dimensions, for a reduced leverage effect at a short stroke. The rear section is heavily reinforced to withstand the forces of strong springs in TSG, DSG and SS builds (often around 19 kg), combined with rates of fire of up to 60 BBs per second.

The rack is CNC-milled from quality spring steel, heat-treated: flexible, hard and wear-resistant. It is left without surface treatment (dark gray, possibly with colored spots), for those who prefer to glue it with two-component epoxy adhesive; gluing is not mandatory. Before installation, lubricating the rack is recommended, ideally with silicone grease.

Features

• CNC-milled body made of nylon with 30% glass fiber: resistant to wear, high temperatures and pressure, aggressive oils and breakage
• Lubrication pockets in the contact area with the gearbox
• Reinforced rear section for strong springs and high rates of fire
• CNC-milled, heat-treated spring steel rack
• 9 teeth – suitable for DSG 8T and 9T gears, for example Pandora (8008 or 8012)
• Can be combined with the extended DSG/TSG spring guide (6678), which prevents the spring from twisting

Specifications

• Configuration: DSG 9T
• Weight: 15.4 g

Enlarging the lightening holes is not recommended, as the structure may be affected. The weight may vary slightly due to moisture absorbed by the material; the piston should not be dried, as moisture significantly increases the strength of the material.