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  • BTR Brian Tooley LS1 Rocker Arms Set of 16 RKR-LS-1.7E - 4.8 5.3 5.7 6.0 LS1 LS2 LS6 LQ4 LQ9 LY5 LY6 LM7 L33
  • BTR Brian Tooley LS1 Rocker Arms Set of 16 RKR-LS-1.7E - 4.8 5.3 5.7 6.0 LS1 LS2 LS6 LQ4 LQ9 LY5 LY6 LM7 L33
  • BTR Brian Tooley LS1 Rocker Arms Set of 16 RKR-LS-1.7E - 4.8 5.3 5.7 6.0 LS1 LS2 LS6 LQ4 LQ9 LY5 LY6 LM7 L33
  • BTR Brian Tooley LS1 Rocker Arms Set of 16 RKR-LS-1.7E - 4.8 5.3 5.7 6.0 LS1 LS2 LS6 LQ4 LQ9 LY5 LY6 LM7 L33
  • BTR Brian Tooley LS1 Rocker Arms Set of 16 RKR-LS-1.7E - 4.8 5.3 5.7 6.0 LS1 LS2 LS6 LQ4 LQ9 LY5 LY6 LM7 L33
  • BTR Brian Tooley LS1 Rocker Arms Set of 16 RKR-LS-1.7E - 4.8 5.3 5.7 6.0 LS1 LS2 LS6 LQ4 LQ9 LY5 LY6 LM7 L33
  • BTR Brian Tooley LS1 Rocker Arms Set of 16 RKR-LS-1.7E - 4.8 5.3 5.7 6.0 LS1 LS2 LS6 LQ4 LQ9 LY5 LY6 LM7 L33
  • BTR Brian Tooley LS1 Rocker Arms Set of 16 RKR-LS-1.7E - 4.8 5.3 5.7 6.0 LS1 LS2 LS6 LQ4 LQ9 LY5 LY6 LM7 L33

    • BTR Brian Tooley LS1 Rocker Arms Set of 16 RKR-LS-1.7E - 4.8 5.3 5.7 6.0 LS1 LS2 LS6 LQ4 LQ9 LY5 LY6 LM7 L33

    Brian Tooley Racing

    $159.99
    (2 reviews) Write a Review
    SKU:
    AK571-16 Rocker Arm Bodies
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    Product Description

    BTR LS Rocker Arm Set No Bearings | 1.7 Ratio Performance Rockers Set of 16

    Fits LS1 LS2 LS6 4.8 5.3 5.7 6.0 Engines | Cathedral & Rectangle Port Heads | Trunnion Upgrade Ready

    Upgrade your valvetrain with the Brian Tooley Racing LS Rocker Arm No Bearing Set, engineered for strength, stability, and high RPM performance. These all-new 1.7 ratio rocker arms are designed as a drop-in upgrade for LS engines using cathedral or rectangle port cylinder heads (exhaust only), delivering significantly improved durability over stock components. Featuring an extended tip design and optimized geometry, these rockers provide increased valve lift capability and enhanced valve tip longevity. With a 46% strength increase over factory rocker arms based on FEA analysis and superior moment of inertia compared to roller tip designs, these rockers are built to handle aggressive cam profiles and high-performance builds. Offered in multiple configurations, these rocker arms can be purchased bare or professionally assembled with trunnion upgrades by Michigan Motorsports for a ready-to-install solution.

    Key Features & Benefits

    • 46% Stronger Than Stock: Engineered using FEA analysis to significantly outperform factory rocker arms in strength and durability under high load conditions.
    • 1.7 Ratio Performance Design: Provides increased valve lift capability while maintaining proper valvetrain geometry for performance applications.
    • Extended Tip Geometry: Improves valve tip contact and durability, especially in high-lift and aggressive camshaft setups.
    • Multiple Build Options: Available as bare rocker bodies or professionally assembled with bushing trunnion kits or BTR shaft mount systems.
    • High RPM Stability: Superior moment of inertia compared to roller tip rockers for improved valvetrain control at elevated engine speeds.

    Key Fitments

    • Engine Compatibility: Fits LS-based engines including 4.8L, 5.3L, 5.7L, and 6.0L such as LS1, LS2, LS6, LQ4, LQ9, LY5, LY6, LM7, and L33.
    • Head Compatibility: Designed for cathedral port and rectangle port cylinder heads (exhaust side applications).
    • Important Notes: CHE trunnion kits are NOT compatible. Bronze bushing trunnion kits may require honing for proper fitment.

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    • 5
      Che trunnion kit

      Posted by michael vansickle on Aug 24th 2023

      Great Kit!

    • 4
      There ok but ..

      Posted by Jon king on Nov 15th 2021

      They look great but I found a few I’d bores on tight side and needed light hone to get them in spec and because I had to open a few up about .002 to make the new bearing fit nice is why I say only 4 stars