Drivetrain› Automatic Transmissions and Components

Tier One Transmission

Stage 2 6L80E Rebuilt Automatic Transmission

$7,499.00

SKU: T1-6L80E-STG2

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Overview

The Tier One Transmission Stage 2 6L80E is a rebuilt automatic transmission designed to handle up to 850HP. It includes a TransGo Performance Valve Body Kit and a triple-disc billet torque converter. The transmission is a complete, drop-in unit for compatible Silverado and Sierra 1500 trucks.
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The Tier One Stage 2 6L80E Transmission is a high-performance, rebuilt automatic transmission engineered to reliably handle up to 850HP from aggressive tuning, turbo builds, and supercharger upgrades. This transmission is designed to fix common 6L80 transmission issues, improving lubrication, reliability, and power-holding capacity over stock units. Key components include a TransGo Performance Valve Body Kit, which enhances line pressure for improved fluid flow, clutch engagement, lubrication, and cooling. It also features a triple-disc billet torque converter, OE-style Borg Warner clutches, a billet forward piston to prevent forward gear loss, a billet direct apply ring, a billet 4-5-6 clutch hub, and a caged needle bearing for high shock load handling. Additional upgrades include an updated front center support bushing, new lube dam, new OE-style bell housing, and a new OEM filter. This transmission is a complete, direct-fit replacement for 2007-2021 Chevrolet Silverado 1500 and GMC Sierra 1500 models equipped with the 6-speed 6L80E transmission. It will not fit trucks with 4-speed, 8-speed, or 10-speed transmissions. Please note that this transmission requires TechM Programming for proper operation and a 300-mile break-in period with a 100-mile relearn procedure to maintain the 2-year/unlimited mileage warranty. A core charge applies, which may be refunded upon return of the stock core in acceptable condition. Freight shipping is required for this item.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

BrandTier One Transmission
Part NumberT1-6L80E-STG2
CategoryDrivetrain
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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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