Our proprietary KAflex® flexible shafts and flexible coupling systems are frequently selected for critical rotating applications that demand a level of performance and safety that cannot be achieved with conventional greased coupling systems or standard flex-element couplings. Extreme torque, excessive angular misalignment, and high operating speeds are just a few of the parameters that make customers and driveshaft suppliers turn to Kamatics Flexible Drive Systems.
EXTEX Engineered Products supplies FAA approved replacement parts for KAflex drive systems across multiple helicopter platforms. As a trusted aerospace aftermarket parts supplier, our high-precision aerospace machined components maintain the same performance specifications as original equipment while reducing your aircraft MRO parts costs and shortening lead times.
206 KAflex Drive Systems
AW139 Drive Systems
UH-1 Drive Systems
212/412 Drive Systems
Why Operators Choose KAflex
Maintenance-free operation.
No grease, no scheduled coupling inspections, no lubrication intervals. KAflex couplings operate reliably without the recurring maintenance that conventional driveshaft systems require.
Proven flight critical safety record.
For nearly four decades, KAflex couplings have been the first choice for helicopter main-shaft and tail rotor driveline positions — applications where component failure is not an option.
Reduced total cost of ownership.
Lower maintenance labor, fewer scheduled downtime events, and extended service life parts combine to deliver measurable savings over the life of the aircraft.
FAA-PMA certified.
Every EXTEX KAflex component carries FAA approved replacement parts certification through Parts Manufacturer Approval, meeting the same airworthiness standards as original equipment at a significantly lower cost. All components are manufactured under AS9100D quality management system with full traceability throughout the aircraft engine MRO supply chain.
Available Components
EXTEX maintains inventory of the following flight critical certified replacement parts for KAflex driveshaft systems:
- Drive shaft kits — complete main driveshaft assemblies by platform
- Rotor brake kits — brake disc, cup, spacer kit, and caliper hose assemblies
- Inertia kits — rotor inertia components
- Firewall kits — firewall cover assemblies and related hardware
- Installation tooling — platform-specific installation tools for proper fitment
For detailed part numbers and availability, select your platform above or request a quote.