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Product Image CNC Machined Alu AOE Adjustable Airbrake Piston Head Pro Pack

CNC Machined Alu AOE Adjustable Airbrake Piston Head Pro Pack


CNC Machined Aluminium AOE Adjustable Airbrake Piston Head Pro Pack – A  high quality, lightweight piston head for standard V2/V3 AEG gearboxes featuring the proven LPE AOE (angle of engagement) adjustment design, this allows for 0 – 5mm of adjustment to be precisely and easily made using LPE AOE shims while keeping the piston head centred on the piston.

The piston head body is machined from aluminium with excess material removed to minimise weight and  a full radius o-ring groove to spread the impact force and maximise durability, a seperate slimmed down aluminium core and non-bearing type bushing help to maximise durability while keeping the overall weight down. For springs over M120 an aluminium piston head is recommended.

This Pro Pack includes 4 airbrake cores (4.2mm, 4.3mm, 4.4mm & 4.5mm diameter) to allow you to match the airbrake to your cylinder head, a standard non-airbrake core and a pack of 8 machined AOE shims, use with  flat cylinder heads is recommended to give maximum sound reduction.

All machined parts are fully CNC machined from solid bar in the United Kingdom by Lees Precision Engineering.


Lightweight hollow piston head body with full radius o-ring groove
Lightweight aluminium core & non-bearing type bushing
9 Ports to improve the airseal
Easy and precise AOE adjustment using LPE AOE shims

Technical Specification

Material : 6000 Series aircraft grade aluminium body, core and bushing
Screw Type : A2 Stainless Steel with Torx T10 head
Weight : 8.1g With 4.5mm core (Without shims)

Please note that a Torx T10 screwdriver will be required for installation, a small drop of medium strength threadlocker should be applied to the screw to prevent loosening during use.
UK Shipping Prices

Royal Mail First Class - £1.80, free for orders over £30.00
Royal Mail First Class Signed For - £2.70 flat rate

International Shipping Prices

Royal Mail Standard Airmail - £3.00
Royal Mail Standard Airmail – Free for orders over £30.00
Royal Mail Priority Tracked & Signed For Airmail – Starts at £9.00


Lees Precision Engineering does not ship to the following countries,
China, Indonesia, Peru

Dispatch & Delivery Times

Orders are normally dispatched within 3 working days of receiving payment.

Orders within the United Kingdom generally arrive within 1 – 2 working days of being dispatched however may take upto 10 working days, especially during peak times for Royal Mail.

International orders generally arrive within 3 – 10 working days of being dispatched but may take upto 15 working days.

International orders to Canada and South American countries often take slightly longer and may take upto 20 working days to arrive from the date of dispatch.