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Michigan Motorsports 1.550" Stainless Exahust Valve for Cathedral Port LS Heads - Fits 243 799 706 862 317 241 853 806 - LS1 LS2 LS6 LQ4 LQ9 LC9 LMG LM7 - Performance Valve Upgrade in Kuwait Michigan Motorsports 1.550" Stainless Exahust Valve for Cathedral Port LS Heads - Fits 243 799 706 862 317 241 853 806 - LS1 LS2 LS6 LQ4 LQ9 LC9 LMG LM7 - Performance Valve Upgrade in Kuwait Michigan Motorsports 1.550" Stainless Exahust Valve for Cathedral Port LS Heads - Fits 243 799 706 862 317 241 853 806 - LS1 LS2 LS6 LQ4 LQ9 LC9 LMG LM7 - Performance Valve Upgrade in Kuwait Michigan Motorsports 1.550" Stainless Exahust Valve for Cathedral Port LS Heads - Fits 243 799 706 862 317 241 853 806 - LS1 LS2 LS6 LQ4 LQ9 LC9 LMG LM7 - Performance Valve Upgrade in Kuwait

Michigan Motorsports 1.550" Stainless Exahust Valve for Cathedral Port LS Heads - Fits 243 799 706 862 317 241 853 806 - LS1 LS2 LS6 LQ4 LQ9 LC9 LMG LM7 - Performance Valve Upgrade

KWD 9.500
– 1 +

Special Features

  • 1.550" Stainless Steel Construction: High-temp, corrosion-resistant material ensures long-lasting durability and performance in street or racing environments.
  • Fits Cathedral Port LS Heads: Direct fit for popular GM castings like 243, 799, 706, 862, 317, 241, 853, and 806—ensuring wide application compatibility.
  • Supports LS-Based Engine Platforms: Designed for LS1, LS2, LS6, LQ4, LQ9, LC9, LMG, LM7—ideal for NA and boosted builds.
  • Improved Flow & Combustion Efficiency: Larger-than-stock size and high-quality finish optimize exhaust flow, helping improve horsepower and throttle response.
  • Perfect for Rebuilds or Upgrades: Ideal when replacing worn OEM valves or upgrading to match aftermarket camshaft and valvetrain setups.

Description

Michigan Motorsports 1.550" Stainless Steel Exhaust Valves are a premium upgrade for LS cathedral port cylinder heads. Precision-engineered from high-grade stainless, these valves are designed to withstand extreme performance environments, including high heat and RPM. Ideal for high-performance street builds, naturally aspirated powerplants, or boosted LS combinations. Compatible with a wide range of GM cathedral port heads (243, 799, 706, 862, 317, 241, 853, 806), these valves are an essential upgrade when rebuilding or modifying your valvetrain for durability and flow.

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