SLP Performance Parts Underdrive Pulley/Balancer

SLP's new 25% underdrive balancer for LS1/LS6/LS2 Corvette's 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 (see photo). 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. 

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