The RENNVOX cat-back exhaust system is under development for the Land Rover Defender 110 / 130 P400 (L663), powered by the 3.0L turbocharged inline-six mild hybrid petrol (P400). Developed with a vehicle-specific approach, this application focuses on enhancing exhaust character while respecting the distinctive engineering of the platform.

The cat-back layout is intended to refine the sound character and exhaust flow downstream of the catalytic-converter area. Exact routing, valve configuration, materials and compatibility will be confirmed before release. The hybrid powertrain requires additional validation of operating modes and exhaust-system integration.

FAQ

Is this product available now?

This cat-back exhaust system is under development. Register your interest for availability and confirmed specifications.

Will it fit my vehicle?

Final fitment for the Land Rover Defender 110 / 130 P400 (L663) must be verified against the exact model, model year, engine and regional specification before ordering.

What changes can I expect?

The development objective is a more engaging exhaust character and optimised flow. Final sound characteristics, performance outcomes and component details are not yet confirmed.