Reinforced High Speed 14-Tooth Piston – SHS

SHS 14 steel tooth piston designed for high-stress mechanisms: clipped sector gears, stiff springs and full-auto bursts. The rack is designed to prevent out-of-phase engagement and the lightened, reinforced body slides with little friction: a tough replacement for V2 and V3 gearboxes.

Features and technical specifications

• Manufacturer: SHS
• Manufacturer code: TT0031
• Type: 14-tooth high speed piston
• Body: nylon fibre, lightened and reinforced
• Rack: 14 steel teeth
• First tooth: raised and reinforced
• Second tooth: removed to prevent out-of-phase engagement in full auto
• Sliding rails: low friction
• Suitable for: clipped sector gears, stiff springs and full-auto fire
• Compatibility: AEG replicas with V2 and V3 gearboxes (not suitable for L85 and SR25)
• Colour: blue

Operation

With a clipped sector gear or a stiff spring the piston works under heavy load, and the most stressed point is the first engagement with the sector gear: this is where the raised, reinforced first tooth absorbs the impact. The missing second tooth prevents out-of-phase engagement in full auto, while the lightened body and low-friction rails make the piston faster and smoother.

Installation

Fitting it requires opening the gearbox. With a clipped sector gear or a stiff spring, it is worth also checking the piston head, cylinder head and spring guide, which work under the same stresses.