Exhaust Land Rover Defender (2020-Today)

The Land Rover Defender is equipped with a Diesel Exhaust Fluid (DEF) reservoir capacity of 20.7 litres. This fluid is essential for reducing emissions via selective catalytic reduction in diesel models, applicable to all Defender 90 and 110 variants.

The usable fuel tank capacity for all diesel engine variants of the Defender is 89 litres, ensuring a substantial driving range for off-road and on-road use.

Gasoline engine variants include:

• Defender 90 P525 V8: 0-100 km/h in 5.2 seconds, max speed 240 km/h (209 km/h with 22" wheels)
• Defender 90 P425: 0-100 km/h in 5.6 seconds, max speed 191 km/h
• Defender 110 P525 V8: 0-100 km/h in 5.4 seconds, max speed 240 km/h

The P525 V8 engine features a bore/stroke of 83.0 / 92.31 mm and a compression ratio of 15.5:1, offering a balance of power and efficiency with factory-equipped exhaust systems.

The braking configuration has a direct impact on exhaust layout and performance:

• Defender 90 P525 V8 features a 6-piston opposed monobloc caliper with a 380 mm ventilated disc at the front, and a floating single-piston caliper with electric parking brake (iEPB) and 365 mm ventilated disc at the rear.
• Defender 110 P525 V8 uses the same brake specifications as the 90, supporting consistent exhaust performance and sound control.

This configuration supports optimal exhaust system integration with braking performance.

There are several high-quality performance exhaust products designed specifically for the Defender models, including :

• QUICKSILVER Stainless Steel Exhaust Line for the Defender OCTA 110 P635 V8, with a FAP-back valve system offering a sporty sound and perfect integration.
• COBRA SPORT Stainless Steel Line, TIG welded SUS-304 steel for Defender 110 V8 P525, providing a muscular, sporty sound.
• Britpart Exhaust Downpipe replacement parts available for Defender 90 and 110 (reference NTC4426).

These options enhance the true sound experience, power delivery, and unique style of the Defender exhaust system.

Yes, particularly in diesel models such as the TD4 :

• Removing the catalytic converter or using a decatalyst system can lead to approximately a 10% increase in power and torque compared to the factory exhaust setup.

However, it's important to consider emissions regulations and vehicle compatibility when pursuing such modifications.

The Defender's exhaust system is equipped with advanced emission control components :

• High-quality Diesel Particulate Filter (DPF) to capture soot and particulates
• State-of-the-art catalytic converters controlling harmful gases
• DEF fluid system to support SCR (Selective Catalytic Reduction) technology in diesel engines

These factory-equipped parts are designed for durability, compliance, and performance, ensuring the Defender meets stringent emissions standards while maintaining engine efficiency.

Upgrading the exhaust system can offer several unique benefits :

• Enhanced sound character and authenticity, providing a true Defender experience
• Potential improvement in engine power and throttle response
• Access to options equipped with advanced valve control modes to customize sound and performance
• Online purchase provides convenience, detailed technical information, and a wide range of performance & factory-level options

Choosing the right exhaust product allows you to enjoy both the robustness of your Land Rover and an elevated driving experience with exclusive sound and power upgrades.

If you have experience or recommendations on alternative exhaust setups, sharing them can help build a community of informed Defender enthusiasts.