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SLP Performance LS1/LS6/LS2/LS3 Harmonic Balancer/Underdrive Pulley

25 Percent Underdrive Harmonic Balancer/Pulley, Steel, Chevrolet 1997-2006 Corvette 5.7/6.0L 6.0L

Corvette LS1, LS6, LS2, LS3 - 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013,

G8 GT/GXP - 2008, 2009
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Was: $219.95
Sale: $212.36
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Save: $7.59


SLP's 25% Harmonic Balancer / Underdrive Pulley for the LS1/LS6/LS2/LS3 Corvette and 2008-2009 LS6 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.

1997-2013 C5/C6 Corvette

Main Belt: Gates 6PK1955 or Equivalent

Accessory Belt: Gates 4PK0990 or Equivalent

2008-2009 Pontiac G8/GXP

Main Belt: 6PK1880 or Equivalent

Accessory Belt: 4PK1080 or Equivalent


  • Extra-tall belt-retention "walls"-no more thrown belts!
  • No aftermarket tensioner required
  • 100% steel construction
  • 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


  • 1997-2013 Corvette
  • 2008-2009 G8 GT/GXP
  • SLP Performance Harmonic Balancer/Under- drive Pulley Pontiac G8 100225

    25 Percent Underdrive Harmonic Balancer/Pulley
  • Steel
  • Chevrolet 1997-2006 Corvette 5.7/6.0L 6.0L

    Pit Stop USAoffers SLP Performance Harmonic Balancer/Under- drive Pulley Pontiac G8 100225 at low everyday prices. Be sure to check out all of our products from SLP Performance including SLP Performance Harmonic Balancers - GM LS.
  • Details

    • SLP100225
    • SLP100225
    • SLP Performance
    • Temporarily Not Available
    • Same Day Shipping!
    • New

    Shipping Information

    • Item Requires Shipping
    • 11.4 lbs.
    • W9.1000” x H6.9000” x L10.5000”
    • Shipping
    • FREE SHIPPING! Ships from Michigan.

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