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Transmission upgrades in Need for Speed: Underground 2 can be applied to increase acceleration and top speed.

The effectiveness of an individual part is dependent on the package they are included in:

  • Street - Low increase of acceleration and top speed
  • Pro - Moderate increase of acceleration and top speed
  • Extreme - High increase of acceleration and top speed
  • Unique - Increases stock acceleration and top speed without adding new parts

Upgrades

Package Part Price Unlock
Street Differential 500 Available from the beginning of the game
Street Lightweight Flywheel 400 Available from the beginning of the game
Street Short Throw Shift Kit 100 Available from the beginning of the game
Pro High Performance Clutch 1,000 Win 9 races during Stage 4 of the career mode
Pro Limited Slip Differential 1,000 Win 9 races during Stage 4 of the career mode
Extreme 6 Speed Transmission 5,000 Find the Performance Shop in Coal Harbor West
Unique - - Win 3 Outrun races during Stage 3 of the career mode

Incompatible Upgrades

  • Differential - Limited Slip Differential - 6 Speed Transmission

Notes

  • Transmission upgrades unlock final drive ratio adjustments, and can be used to adjust the ratio of all gears.
  • 6 Speed Transmission upgrades are available for cars that already have them stock.

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