BTR OEM LT Rocker Arms with Pre-Installed TK002 Trunnion Upgrade
When upgrading your Gen. V LT engine, factory rocker arms are rarely the weak link, the factory trunnions are. Which is why replacing the trunnions is such a popular upgrade when upgrading your valve-train. The only issue is that the installation is very tedious and time consuming. That's why Brian Tooley Racing now offers a TURN-KEY solution to help you “save time wrenching” so you can spend more time driving!
BTR starts with genuine OEM GM LT rocker arms and professionally upgrades them with their industry-proven TK002 Premium Trunnion Kit, delivering a complete, ready-to-install valvetrain solution that combines OEM reliability with race-proven durability. The TK002 upgrade incorporates a pre-installed inner race, heat-treated 52100 bearing steel, and a priority oiling trunnion design engineered specifically for the increased spring pressures, lift, RPM, and abuse of today's performance LT engines.
Rather than spending hours disassembling brand-new rocker arms, pressing bearings, installing retainers, verifying clearances, and hoping every snap ring is fully seated, these rocker arms arrive professionally assembled and ready for installation. That means less time at the workbench, fewer opportunities for assembly errors, and complete confidence that one of the most critical components of your valvetrain has been built correctly the first time.
Whether you're installing a mild street cam or assembling a serious track or drag racing engine, these rocker arms provide the peace of mind that comes from combining OEM GM rocker geometry with one of the most respected trunnion upgrades in the industry.
Why Upgrade the Factory Trunnions?
The OEM LT rocker arm itself is exceptionally durable, but the factory powdered-metal trunnion assembly was never designed for the increased loads created by:
Higher lift camshafts
Increased valve spring pressures
Extended high-RPM operation
Aggressive road course or drag racing use
Supercharged and high-horsepower applications
As valve spring loads increase, the factory bearing assembly becomes a known failure point. A failed trunnion can release needle bearings into the engine, potentially causing catastrophic internal damage.
The BTR TK002 system was engineered specifically to eliminate that concern by significantly improving trunnion strength, bearing support, lubrication, and long-term durability.
BTR TK002 Technical Advantages
Genuine OEM GM LT rocker arms
Professionally assembled by Brian Tooley Racing
Premium BTR TK002 trunnion upgrade pre-installed
Heat-treated 52100 bearing steel inner races for superior wear resistance
Priority oiling trunnion design for improved lubrication
Pre-installed inner races simplify assembly while improving bearing support
Designed for higher valve spring pressures and aggressive camshaft profiles
Eliminates the factory trunnion's most common failure point
Ready to install—no press work, specialty tools, or assembly required
Why Buy the Complete Assembly?
While the TK002 upgrade kit can be installed into your own rocker arms, many engine builders prefer purchasing them already assembled.
This eliminates:
Disassembly of factory rockers
Pressing bearings and races
Snap ring installation
Bearing alignment concerns
Risk of damaging new components during assembly
Additional labor and specialty tooling
The result is a complete, professionally assembled rocker arm set that's ready to bolt on, allowing you to spend less time assembling parts and more time finishing your engine.
Absolutely. Since they're already looking at the valvetrain, this is a perfect opportunity to cross-sell the ARP studs.
GMS Notes
While you're upgrading your rocker arms, we highly recommend installing a set of ARP Rocker Arm Studs in place of the factory torque-to-yield bolts. Converting to rocker studs provides a stronger, reusable fastener that offers more consistent clamping force and makes future valve spring, pushrod, or camshaft service significantly easier. Instead of replacing torque-to-yield bolts every time the valvetrain is disassembled, the studs remain in the cylinder head while only the nuts are removed—reducing wear on the aluminum threads and simplifying future maintenance.
Combined with these BTR OEM Rocker Arms featuring the pre-installed TK002 Trunnion Upgrade, ARP Rocker Studs create a durable, professional-grade valvetrain package that's built to handle everything from daily driving to high-RPM track abuse with confidence.
Vehicle Fitment.
Compatible with the following Gen V GM LT engines using OEM-style pedestal-mount rocker arms:
Chevrolet Camaro
Chevrolet Corvette
2014-2019 Corvette Stingray (LT1)
2015-2019 Corvette Z06 (LT4)
2020-Current Corvette Stingray (LT2)
Chevrolet Silverado
2014-Current 5.3L (L83, L84)
2014-Current 6.2L (L86, L87)
GMC Sierra
2014-Current 5.3L (L83, L84)
2014-Current 6.2L (L86, L87)
Chevrolet Tahoe / Suburban
GMC Yukon / Yukon XL
Cadillac
What’s in the box?
(16) OEM Rocker Arms with pre-installed trunnion upgrades
(16) Replacement Rocker Arm Bolts
For maximum reliability, we recommend pairing your BTR OEM Rocker Arms with the TK002 Trunnion Upgrade, with our BTR Chromoly Pushrods, BTR Dual Valve Spring Kit, and ARP Rocker Arm Studs to create a complete, race-proven valve-train system capable of handling everything from daily driving to high-boost competition engines.
Note; our goal is to always keep these products in stock for quick ship, but some orders may need to drop ship direct from BTR.
BTR OEM LT Rocker Arms with Pre-Installed TK002 Trunnion Upgrade
When upgrading your Gen. V LT engine, factory rocker arms are rarely the weak link, the factory trunnions are. Which is why replacing the trunnions is such a popular upgrade when upgrading your valve-train. The only issue is that the installation is very tedious and time consuming. That's why Brian Tooley Racing now offers a TURN-KEY solution to help you “save time wrenching” so you can spend more time driving!
BTR starts with genuine OEM GM LT rocker arms and professionally upgrades them with their industry-proven TK002 Premium Trunnion Kit, delivering a complete, ready-to-install valvetrain solution that combines OEM reliability with race-proven durability. The TK002 upgrade incorporates a pre-installed inner race, heat-treated 52100 bearing steel, and a priority oiling trunnion design engineered specifically for the increased spring pressures, lift, RPM, and abuse of today's performance LT engines.
Rather than spending hours disassembling brand-new rocker arms, pressing bearings, installing retainers, verifying clearances, and hoping every snap ring is fully seated, these rocker arms arrive professionally assembled and ready for installation. That means less time at the workbench, fewer opportunities for assembly errors, and complete confidence that one of the most critical components of your valvetrain has been built correctly the first time.
Whether you're installing a mild street cam or assembling a serious track or drag racing engine, these rocker arms provide the peace of mind that comes from combining OEM GM rocker geometry with one of the most respected trunnion upgrades in the industry.
Why Upgrade the Factory Trunnions?
The OEM LT rocker arm itself is exceptionally durable, but the factory powdered-metal trunnion assembly was never designed for the increased loads created by:
Higher lift camshafts
Increased valve spring pressures
Extended high-RPM operation
Aggressive road course or drag racing use
Supercharged and high-horsepower applications
As valve spring loads increase, the factory bearing assembly becomes a known failure point. A failed trunnion can release needle bearings into the engine, potentially causing catastrophic internal damage.
The BTR TK002 system was engineered specifically to eliminate that concern by significantly improving trunnion strength, bearing support, lubrication, and long-term durability.
BTR TK002 Technical Advantages
Genuine OEM GM LT rocker arms
Professionally assembled by Brian Tooley Racing
Premium BTR TK002 trunnion upgrade pre-installed
Heat-treated 52100 bearing steel inner races for superior wear resistance
Priority oiling trunnion design for improved lubrication
Pre-installed inner races simplify assembly while improving bearing support
Designed for higher valve spring pressures and aggressive camshaft profiles
Eliminates the factory trunnion's most common failure point
Ready to install—no press work, specialty tools, or assembly required
Why Buy the Complete Assembly?
While the TK002 upgrade kit can be installed into your own rocker arms, many engine builders prefer purchasing them already assembled.
This eliminates:
Disassembly of factory rockers
Pressing bearings and races
Snap ring installation
Bearing alignment concerns
Risk of damaging new components during assembly
Additional labor and specialty tooling
The result is a complete, professionally assembled rocker arm set that's ready to bolt on, allowing you to spend less time assembling parts and more time finishing your engine.
Absolutely. Since they're already looking at the valvetrain, this is a perfect opportunity to cross-sell the ARP studs.
GMS Notes
While you're upgrading your rocker arms, we highly recommend installing a set of ARP Rocker Arm Studs in place of the factory torque-to-yield bolts. Converting to rocker studs provides a stronger, reusable fastener that offers more consistent clamping force and makes future valve spring, pushrod, or camshaft service significantly easier. Instead of replacing torque-to-yield bolts every time the valvetrain is disassembled, the studs remain in the cylinder head while only the nuts are removed—reducing wear on the aluminum threads and simplifying future maintenance.
Combined with these BTR OEM Rocker Arms featuring the pre-installed TK002 Trunnion Upgrade, ARP Rocker Studs create a durable, professional-grade valvetrain package that's built to handle everything from daily driving to high-RPM track abuse with confidence.
Vehicle Fitment.
Compatible with the following Gen V GM LT engines using OEM-style pedestal-mount rocker arms:
Chevrolet Camaro
Chevrolet Corvette
2014-2019 Corvette Stingray (LT1)
2015-2019 Corvette Z06 (LT4)
2020-Current Corvette Stingray (LT2)
Chevrolet Silverado
2014-Current 5.3L (L83, L84)
2014-Current 6.2L (L86, L87)
GMC Sierra
2014-Current 5.3L (L83, L84)
2014-Current 6.2L (L86, L87)
Chevrolet Tahoe / Suburban
GMC Yukon / Yukon XL
Cadillac
What’s in the box?
(16) OEM Rocker Arms with pre-installed trunnion upgrades
(16) Replacement Rocker Arm Bolts
For maximum reliability, we recommend pairing your BTR OEM Rocker Arms with the TK002 Trunnion Upgrade, with our BTR Chromoly Pushrods, BTR Dual Valve Spring Kit, and ARP Rocker Arm Studs to create a complete, race-proven valve-train system capable of handling everything from daily driving to high-boost competition engines.
Note; our goal is to always keep these products in stock for quick ship, but some orders may need to drop ship direct from BTR.
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