Product Description
Brian Tooley Racing BTR LS1 Shaft Rocker Kit V2
Shaft Rocker System for 1997-2013 Cathedral Port LS Heads | Fits LS1 LS2 LM7 L33 LQ4 LQ9 4.8L 5.3L 5.7L 6.0L
Upgrade your cathedral port LS valvetrain with the Brian Tooley Racing BTR LS1 Shaft Rocker Kit V2. Designed as the next step beyond traditional LS rocker arm trunnion kits, this shaft rocker system significantly reduces valve train deflection caused by the factory single-bolt rocker mounting design used on Gen III/IV LS cylinder heads. The system uses billet steel stands, genuine 52100 bearing steel shafts, fasteners, bearings, and thrust shims to create a stronger, more stable rocker mounting platform while allowing you to use your existing stock rockers or compatible BTR rocker arm bodies.
Key Features & Benefits
- Brian Tooley Racing LS1 Shaft Rocker System: This BTR V2 shaft rocker kit is designed for 1997-2013 cathedral port LS cylinder heads and provides a major valvetrain stability upgrade over factory rocker mounting. It is ideal for performance-minded engine builders looking to improve rocker control, durability, and consistency.
- Reduces Valvetrain Deflection: Stock LS rocker arms mount with a traditional single-bolt configuration, which can allow deflection under aggressive valvetrain loads. The BTR shaft rocker system ties each pair of rockers into a stronger stand and shaft assembly, helping support more stable valve motion in performance applications.
- Billet Steel Stands with 52100 Bearing Steel Shafts: During development, Brian Tooley Racing tested both aluminum and steel stands, with steel proving to be the stronger solution. The kit uses billet steel stands and genuine 52100 bearing steel shafts for a durable rocker support system built for serious LS valvetrain service.
- Five-Fastener Rocker Pair Support: Each pair of rockers is supported by five fasteners mounting them to the rocker stand instead of relying on the traditional single bolt per rocker configuration. This added support helps create a more rigid rocker mounting structure for aggressive camshaft, spring, and RPM combinations.
- Updated V2 Shim Design: The V2 version uses a shim design for easier assembly compared to the earlier snap ring approach, while also offering higher strength. This update makes the shaft rocker kit more installer-friendly for engine builders, machine shops, and LS enthusiasts assembling performance cylinder heads.
Kit Includes
- SRKR1-BASE: BTR LS1 Shaft Rocker System Stand - Quantity 2
- SRKR1Shaft: BTR LS1 Shaft Rocker System Shaft - Quantity 8
- 39541: Bolt for Rocker Stand - Quantity 24
- SRKR_SHM055: Shaft Rocker Thrust Shim .055" Thick - Quantity 34
- TK/BEARING-33: BTR Rocker Arm Trunnion Bearing Kit of 33 - Quantity 1
Purchase Options
- Base Kit: Reuse your existing stock GM rocker arm bolts.
- Kit with New BTR Rocker Arm Bolts: Choose this option to include new BTR rocker arm bolts with the shaft rocker kit.
Specs
- Brand: Brian Tooley Racing
- Product Line: BTR Shaft Rocker Kit V2
- Product Type: LS1 shaft rocker system
- Cylinder Head Style: Cathedral port LS heads
- Engine Family: Gen III/IV LS-based engines
- Engine Sizes: 4.8L, 5.3L, 5.7L, 6.0L
- Stand Material: Billet steel
- Shaft Material: Genuine 52100 bearing steel
- Assembly Design: V2 shim design for easier assembly and higher strength
- Rocker Compatibility: Existing stock rockers or compatible BTR rocker arm bodies
Notes
- Stock GM rocker arm bolts can be reused, or choose to have new BTR rocker arm bolts included.
- Fits Trick Flow Cathedral port heads. May fit other aftermarket heads, please verify first.
Key Fitments
- Fits 1997-2013 Cathedral Port LS Heads 4.8L 5.3L 5.7L 6.0L LS1 LS2 LM7 L33 LQ4 LQ9
- Compatible with OEM Casting #'s 243, 241, 799, 853, 706, 862, 317
- Fits Trick Flow Cathedral port heads. May fit other aftermarket heads, please verify first.
