3.8 / 4.1 & 4.75 available

 Reverse cut front option

 Up to 70% stronger

 43%Thicker crown wheel

 40% Larger tooth profile

KAM offers a range of alternative ratio crown wheel and

pinion gear sets. The optimum final drive ratio can be

selected to accommodate increased tyre diameter, up

rated engine performance and vehicle application.

 

The increase in strength is measured by using the standard

3.54:1 ratio as a baseline, calculating input torque, produced

by the engine power and output torque produced by the

feedback into the differential from traction obtained.

 

Up to 25% gearing reduction coupled with up to 70%

increase in strength is possible with KAM lower ratio crown

wheels and pinions.

 

3.54:1 is the standard ratio on all Land Rover Defenders,

Discovery's and Range Rover Classics. Lower ratios of

3.8:1 ,4.1:1 and 4.75:1 are available. The effect of these lower

ratios can be seen in the chart. 

 

Land Rover fit the same differential assembly to the front

and rear axles. As a result the front differential rotates in

the opposite direction to the rear with the driving force

being applied to the back of the gear teeth. KAM produce

ring and pinion sets for the front differential assembly that

are ?reverse cut? which ensure the force is applied to the

stronger/correct side of the gear teeth.