Speedtek T56 / TR6060 & Magnum 6 Speed + Reverse Dog Engagement Gearset

SKU: T56DB-6S-HOL-26
Availability: in stock Many in stock Out of stock You can purchase this product but it's out of stock

Speedtek T56 / TR6060 & Magnum 6 Speed + Reverse Dog Engagement Gearset

$9,500.00

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Vendor: Speedtek Auto Racing
Product Type: Drivetrain
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DESCRIPTION

Speedtek T56 / TR6060 / Magnum 6-Speed Heavy Duty Dog Engagement Gearset.

The Speedtek Heavy-Duty 6-Speed Dog Engagement Gearset is engineered for high-performance and competition applications, offering multiple gear ratio configurations to suit a wide range of vehicle setups and driving requirements.

Choose from a selection of wide-ratio and close-ratio gear combinations to tailor your transmission to your engine's power delivery, final drive ratio and intended application.

Designed around a heavy-duty gear architecture through KissSoft, the Speedtek gearset incorporates purpose-built components to withstand the demands of performance driving and competitive motorsport.

Key Features

6 Forward Dog Engagement Gears
Dog Engagement Reverse Gear Assembly - included as standard
26-Spline or 29-Spline Input Shaft Options
Wide-Ratio and Close-Ratio Gear Configurations
Helical-Cut Gear Design
42 mm Heavy-Duty Input Drive and Driven Gears
7 mm Thick Dog Rings - for increased durability
Heavy-Duty Chromoly Shift Forks
18-Spline Hub Design
One-Piece Countershaft Design
31-Spline Mainshaft - for applicable T56 configurations
Individually Removable Gears for servicing and maintenance
Multiple Gear Ratio Options to Suit Different Applications

Vehicle & Application Compatibility

The Speedtek gearset is designed for a range of performance transmission applications, including:

GM / Holden: GTO and SS Commodore
Chevrolet: Corvette C5 and C6
Dodge: Viper and Challenger
Cadillac: CTS-V
Ford: Barra 4.0L-powered applications and Mustang
Custom Applications: Other configurations may be available upon request. Additional costs may apply.

Compatibility varies depending on the transmission version, shaft configuration and vehicle application. Please confirm your specific setup before ordering.

Available Gear Ratios

The following ratios are available across the listed gear positions. Multiple first, second, third and sixth gear options allow the gearset to be configured to suit your requirements.

Tooth counts are listed as Main Gear / Counter Gear.

1st Gear — Multiple Options

Ratio	Tooth Count
2.01 -	20 / 11
2.22 -	22 / 11
2.49 -	27 / 12
2.68 -	29 / 12
2.96 -	32 / 12

2nd Gear

Ratio	Tooth Count
1.73 -	25 / 16
1.94 -	28 / 16

3rd Gear

Ratio	Tooth Count
1.28 -	24 / 19
1.40 -	21 / 19

4th Gear

Ratio	Tooth Count
1.00	18 / 20

5th Gear

Ratio	Tooth Count
0.87 -	24 / 19

6th Gear — Multiple Options

Ratio	Tooth Count
0.70 -	22 / 14
0.60 -	24 / 13

Reverse Gear

Ratio	Tooth Count
2.77 -	—

Please confirm the applicable tooth counts and gear combinations for your selected transmission configuration before ordering.

Installation & Compatibility Notes

Tail Housing Modification

Modification to the factory tail housing is required when fitting the 31-spline slip yoke.

The tail housing must be machined to accommodate the larger bushing supplied with the applicable configuration.

TR6060 Compatibility

Designed to utilise the OEM mainshaft for applicable TR6060 configurations.
Compatibility specified for pre-2013 TR6060 applications.
Transmission version and component compatibility must be confirmed before purchase.

Optional & Upcoming Upgrades

The following available to order (pending availability,, please email us)

Race-Spec Short Shifter
Billet Front Transmission Plate - designed for compatibility with the Tilton 8000 Series hydraulic release bearing on T56 applications.
Oil Spray Bar Option - for improved oil delivery to 1st through 4th gears.
Billet Transmission Casing - development details to be announced.

Before Ordering

Please ensure you select the correct gear ratios, input shaft spline configuration and transmission application when placing your order.

For non-standard applications or configurations requiring additional components or modifications, contact us to confirm compatibility before purchase.

SHIPPING & LEAD TIME

If a product is marked as “Out of Stock” or “In Development”, please email us to enquire about the estimated lead time, as timeframes vary depending on the product.

Lead times vary depending on the product, its size and complexity. For example, a gearbox may have an estimated lead time of 3–4 months, while a bearing kit may take approximately 1–2 weeks. These timeframes are indicative only, and our team can confirm the estimated lead time for your specific product.

REVIEWS

RETURNS POLICY

We have a 14-day return policy, which means you have 14 days after receiving your item to request a return. To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging, we require you to provide us with the receipt or proof of purchase. To start a return, you can contact us at admin@speedtekautoracing.com. If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. The return label paid for by the customer, Items sent back to us without first requesting a return will not be accepted. Please note, a restocking fee of 15% will apply to any returned goods. You can always contact us for any return question at admin@speedtekautoracing.com. Damages and issues: Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right. Exceptions / non-returnable items, Certain types of items cannot be returned, like custom products (such as special orders or personalized items). We also do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item. Unfortunately, we cannot accept returns on sale items (discounted products) or gift cards. Exchanges: The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item. Refunds: We will notify you once we’ve received and inspected your return and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method. Please remember it can take some time for your bank or credit card company to process and post the refund too.

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