for Defender 90/110Roamerdrive Overdrive Unit for / Five Speed Transmission 1986-2006 Roamer| DA9017

The Defender Roamerdrive Overdrive Unit is a rugged, bolt-on auxiliary gearbox designed to enhance the performance and fuel economy of Defender 90 and 110 models equipped with a standard five-speed transmission from 1986 to 2006. This mechanical overdrive adds an optional 28% to the drivetrain ratio, reducing engine speed for quieter, more comfortable motorway travel while lowering wear on mechanical components. Utilizing epicyclical gear technology, it operates quietly and efficiently, offering fuel savings of up to 18% on long journeys. Controlled by a convenient hand lever, it does not alter the vehicle's original gear ratios and can be engaged in any gear in high or low range, improving off-road versatility.

Key Features:

• Improves fuel economy up to 18%
• Reduces engine speed and noise
• Totally mechanical with no electronic or hydraulic components

Compatibility:

• Defender 90 1986-2006
• Defender 110 1986-2006

Superseded Part Number:
DA9017

Roamer is known for producing durable and reliable mechanical overdrive units that enhance vehicle performance and fuel efficiency, trusted by expedition enthusiasts worldwide.