Drivetrain Shifters and Components

S1 Sequential

T56 GM Kit

$1,699.00

SKU: GMT56

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The S1 Sequential T56 GM Kit is a sequential shifter conversion for GM T56 H-pattern gearboxes. It allows for a true sequential operation, providing repeatable, lightning-fast shifts. The kit is designed as a direct bolt-on replacement, requiring no internal modifications to the gearbox.
Show original supplier description
The S1 Sequential T56 GM Kit converts your standard GM T56 H-pattern gearbox into a true sequential shifter, offering lightning-fast and repeatable shifts even under demanding racing conditions. This kit is engineered as a direct bolt-on replacement, eliminating the need for internal gearbox modifications. The sequential operation ensures you get the right gear every time. The push/pull motion significantly enhances driver coordination under high-G loads, making accidental mis-shifts impossible and protecting your engine. It offers precise mechanical feedback, a mechanical reverse lockout for safety and ease of use, and the ability to select neutral between any gear. This specific shifter kit is designed exclusively for early GM Tremec and Borg-Warner T56 transmissions. It fits VT–VZ Holden Commodores (T56 only), 4th Gen Chevrolet Camaros/Pontiac Firebirds, and Holden Monaro/Pontiac GTO models. It is crucial to note that this version does NOT fit Ford or Dodge Viper T56 gearboxes, late-model VE/VF Commodores, 5th/6th Gen Camaros (a TR-6060 listing is available), or Tremec Magnum/Magnum F transmissions (a separate listing is available for these). Installation involves fitting the main shifter unit and shift knob, and while it fits the gearbox directly, you will likely need to trim your transmission tunnel for clearance. An optional Shifter Surround is recommended to seal this modification cleanly. The kit is offered with various shifter options and upgrades, including a Gear Position Sensor, Digital Gear Indicator, Shifter Surround, and different lever configurations (Offset Lever, Direct High Lever, High Linkage Lever), to customize the setup to your specific needs.

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.

Fitment

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Specifications

BrandS1 Sequential
Part NumberGMT56
CategoryDrivetrain

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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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.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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