SLP Performance Harmonic Balancer/Underdrive Pulley, 1997-11 Corvette - 2008-09 L76 Pontiac G8

SLP's 25% underdrive balancer for the LS1/LS6/LS2/LS3 Corvette and 2008-09 L76 Pontiac G8 and 2009 GXP incorporates a number of high-quality features you won't find on any other aftermarket unit. Chief among them are a pair of extra-tall belt-retention walls that eliminate the belt-slippage issues common to other balancers. Gains of up to 10 horsepower can be expected. Other unique design strengths include 100% steel construction (other brands use steel and aluminum), integral timing marks, and built-in puller-mounting threads. Includes a new balancer bolt and detailed installation instructions.

NOTE: Balancer requires two new belts not included.

C5/C6 Corvette Main Belt: Gates 6PK1900 or Equivalent Accessory Belt: Gates 4PK1040 or Equivalent

Pontiac G8/GXP Main Belt: 6PK1880 or Equivalent Accessory Belt: 4PK1080 or Equivalent

FEATURES: Extra-tall belt-retention "walls"-no more thrown belts! No aftermarket tensioner required 100% steel construction Lighter than the stock balancer Integral timing marks and puller-mounting threads Keyed for high-rpm or supercharged applications Does not cause false knock retard or erratic power-curve dips Includes a new balancer bolt SFI Approved