Gearbox Parts

High quality spring from ULTIMATE. This is the Blue M95 spring from ASG  Military specification spring steel which means the best possible steel ...

ULTIMATE – MILSPEC - M105 – Spring rate: 0.467N/mm Ultimate Mil-Spec AEG springs are manufactured out of the best steel (SiCr) available for sprin...

A high quality set of shims from Ultimate, in two sizes. The set includes x10 0.10mm shims and x10 0.20mm shims. Builds a tight & durable gear...

High quality spring from ULTIMATE. This is the Yellow M115 spring from ASG  Military specification spring steel which means the best possible ste...

A high quality set of shims from Ultimate, in two sizes. The set includes x10 0.15mm shims and x10 0.3mm shims. Builds a tight & durable gearb...

A set of 8mm bearings from ULTIMATE. These bearings are precision made in Japan from solid steel. The 8mm over-sized design minimises friction an...

A very useful spring set for all version 2/3 gearboxes. Includes cut-off lever spring, trigger spring, reversal latch spring, safety cover spring,...

High performance piston made from high-strength polycarbonate. The piston features 10 heat treated steel teeth in addition to the piston's embedde...

A spool of super high quality silver-plated electical wiring. Suitable for all AEGs. The silver plating provides high conductivity and minimal res...

High quality spring from ULTIMATE. This is the Orange M125 spring from ASG  Military specification spring steel which means the best possible ste...

Protect your AEGs motor and gears with the new ULTIMATE® Upgrade Series Anti Reversal Latch. The ULTIMATE® Upgrade Series CNC engineered Anti Reve...

Precision CNC manufactured cylinder heads from ULTIMATE. Colour coded for easy recognition, this head is suitable for version 2 gearboxes. Double ...

High quality spring from ULTIMATE. This is the Red M135 spring from ASG  Military specification spring steel which means the best possible steel ...

High quality tappet plate from ULTIMATE. Incredibly strong construction is highly resistant to flex and breakage in even the highest speed gearbox...

High quality spring from ULTIMATE. These are double progressive springs which make sure the torque of the motor is used to its full extent, giving...

A set of 5.9mm bearings from ULTIMATE. These bearings are precision made in Japan from solid steel. The 5.9mm design minimises friction and wear ...

High quality selector plate from ULTIMATE. Incredibly strong construction is highly resistant to flex, breakage and electrical heat build-up. Suit...

High quality spring from ULTIMATE. These are double progressive springs which make sure the torque of the motor is used to its full extent, giving...

Solid steel trigger from ULTIMATE. Very strong construction minimises possibility of snappage. Includes trigger torsion spring. Suitable for M4/M1...

When it comes to upgrading your ball bearings the ceramic silicon nitride ball bearing is the ultimate choice for those wanting the very best in t...

Designed to offer enhanced performance to any custom airsoft build, the Ultimate BOOST range of gears provide smooth and reliable power transfer i...

A high strength spring guide with full metal construction. Features steel bearings under a rotatable guide to minimise friction when the spring is...

High quality tappet plate from ULTIMATE. Incredibly strong construction is highly resistant to flex and breakage in even the highest speed gearbox...

A high quality switch for all v.2 gearboxes. Contact points have a high quality plating to ensure a low inner resistance and minimal heat build-up...