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INSTALLATION TAKES ABOUT 2 HOURS AND IS DONE COMPLETELY FROM THE LOWER PAN COVER. COMES WITH FULL INSTRUCTIONS. DOES NOT FIT 2007+ SENTRA, ALTIMA
The Balancer Shaft Removal kit is a must for high RPM performance. The QR25DE comes equipped with a balancer shaft assembly that spins at twice engine speed to generate an opposing inertial mass. While this contributes to a small decrease in the perceived vibration, it can double the stress on the main bearings, as this opposing mass must push the engine block in an opposing direction to the engines reciprocating mass. This is a bit like what happens when you clap your hands, only at the main bearings in your motor! That combined with the fact that the balance shafts would be spinning over 12000 RPM makes this kit a must for any QR25 performance engine. Does not fit 2007+ Sentra, Altima.