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Lightened Underdrive Pulley

Hi techies a question for ya, what would be the point of fitting a lightened underdrive pulley to my stage 2 TT auto??

 

and do you need new belts or does itjust replace the original?

 

and how much of a pita is it to do?

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    you need shorter belts.

     

    benefits are much the same as a lightened flywheel, quicker revving.

     

    I'm installing a complete lightened pulley set soon if you want to come round and take a gander?

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    i got the sgp lightened pulley from smithy at christmas and it came with the belts. it allows the engine to rev easier.

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