Michigan Motorsports LS3 Rocker Arms with Trunnion Upgrade Installed - Fits 6.0L 6.2L L99 L76 L92 L96 LSA Ly6 L77 LS9 - Ideal for Boosted & Cammed LS Engines

If you're building a serious LS engine, the stock rocker arms just won’t cut it. Michigan Motorsports LS3 Rocker Arms come fully assembled with a premium trunnion upgrade already installed — no guesswork, no hassle, just performance. Designed to eliminate the known failure points of factory needle-bearing rockers, this setup delivers the strength, stability, and confidence your engine needs when you're pushing the limits. Whether you're spinning your LS past 7,000 RPM, running a big cam, or cramming air into the cylinders with a turbo or blower, these rockers hold the line under extreme pressure. Compatible with a wide range of GM 6.0L and 6.2L platforms including L99, L76, L92, L96, LSA, LS9, LY6, and L77, this kit is ideal for street warriors, weekend racers, and full-on competition builds. With improved oil flow, extended durability, and a true bolt-on design, they’re the no-brainer upgrade for anyone who demands real performance from their LS valvetrain.

• Trunnion Upgrade Installed for Maximum Strength: Forget needle bearing failure—these LS3 rocker arms come fully assembled with premium trunnions that are built to survive high-RPM abuse, big boost, and aggressive cam profiles.
• Engineered for LS3 6.0L & 6.2L Platforms: Compatible with GM’s most popular LS engines including L99, L76, L92, L96, LSA, LS9, LY6, and L77, these rockers are the go-to for serious performance upgrades across a wide range of LS builds.
• Ideal for Boosted, Cammed & High-Revving Builds: If you're running a turbo, blower, nitrous, or high-lift cam, these rockers deliver the stability and precision needed to keep your valvetrain locked in at full throttle.
• No Assembly Required – Bolt On & Go: Pre-assembled with upgraded trunnions so you can spend less time in the garage and more time tearing up the street or track. A true drop-in upgrade for the DIY or pro-level builder.
• Superior Oiling & Longevity Under Pressure: The upgraded design delivers better oil flow and bearing surface contact, reducing friction, cutting heat, and extending component life when things get hot under the hood.