Mast Assembly

The Bell Helicopter mast assembly is the critical link that drives the lift that carries the aircraft. Much like EXTEX drives the aftermarket to lift your bottom line.

Main Rotor Hub

The EXTEX main rotor hub replacement parts continue to serve military and commercial aircraft. Both foreign and domestic. We are proud of the missions that they help to complete.

Accessory Gearbox

We provide total life-cycle support for your PT6 engine accessory gearbox, including couplings, shafts, gears, and sealing components. The accessory gearbox drives critical engine systems — fuel control, oil pump, starter-generator — making component reliability essential. EXTEX accessory gearbox parts are precision-ground and inspected to ensure consistent performance, with strategic inventory levels maintained for rapid fulfillment.

Power Turbine Section

EXTEX provides a comprehensive offering of flight critical certified replacement parts for the PT6 power turbine section, including seal rings, rotor air seals, blades, interstage stator and rotor seals, and couplings. Our PT6 turbine blades feature advanced sulfidation-resistant coatings that extend time on wing — a critical advantage for operators in corrosive environments. Every power turbine component undergoes rigorous dimensional inspection and metallurgical verification before shipping.