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The crownwheel for 3.4 ratio as fitted to most Cooper S and later 1990 cars when extra power was required after Rover fitted 2.9/3.1 and 2.76 ratios.

Needs 22A413 18 tooth pinion.
Austin Mini Crownwheel, 3.4 Final Drive

Austin Mini Crownwheel, 3.4 Final Drive

Austin Mini Crownwheel, 3.4 Final Drive
Part No: 22A411
$282.95
Qty:
Fits the following:
Classic Mini
The crownwheel for 3.4 ratio as fitted to most Cooper S and later 1990 cars when extra power was required after Rover fitted 2.9/3.1 and 2.76 ratios.

Needs 22A413 18 tooth pinion.
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Related Technical Articles:
Created: October 26, 2000
The final drive gears are ultimately responsible for the way your Mini goes after engine, gearbox, and under carriage tweaking has been applied. The aforementioned and the degree to which it has been done will affect the decision as to what Final Drive is required. They’re also responsible for much discussion between many tuning freaks, and confusion to the less informed.