Toyota SUPRA MK4 6XD Sequential Transmission
The BIG POWER Toyota SUPRA MK4 Sequential Drivetrain Package
6XD Sequential Transmission Package for Toyota SUPRA MK4
The 6XD Sequential Gearbox Package for the Toyota SUPRA MK4 is becoming one of our fastest selling installation packages worldwide and proven by some of the biggest names in car building like @chucklesgarage, @PBR_supra and many others. Designed for high-performance street cars Stock Power up to 3000 ft lbs (6XDX version), Super builds, track builds, and serious competition applications, this complete drivetrain system combines the proven 6XD sequential transmission with an upgraded 26 or 29 spline 300m Input shaft, Alum 4.00″ diameter driveshaft, and custom rear trans mount that utilizes the OEM mounting points in chassis. The shifter assembly comes right up through the OEM shifter boot in center console to make everything plug in and play installation!
With more than two hundred transmission gear ratios, the 6XD package is built to suit your engine combination, tire size, horsepower goals, and intended driving application.
Toyota SUPRA MK4 Installation Design
The 6XD installation package is engineered to simplify integration into your Toyota SUPRA MK4 drivetrain layout. Our kit uses upgraded driveshaft which can mount to an OEM or Ford 9″ Diff. Also, an SFI safety rated Steel bell housing and Tilton TOB unit mounted inside the bell housing.
Toyota SUPRA MK4 6XD sequential unit mounts into the tunnel using a precision laser cut steel mounting bracket, mandrel bent and includes a poly isolator mount to be installed between trans and rear cross member.
This all positions the shifter assembly to come through the OEM center console location, providing a clean, factory-style shifter placement.
Unlike conventional cable-operated sequential units on the market that can produce a soft or spongy shifting feel, the 6XD sequential uses an billet aluminum solid mounted shifter directly to the billet transmission itself, allowing for a more direct, solid connection between the shifter and transmission. The result is a precise, positive shifting experience through every gear.
Upgraded Driveshaft
The 6XD Toyota SUPRA MK4 package features an upgraded 4.00″ diameter driveshaft that has proven to handle over 3000 WHP. This performance-oriented diameter replaces the factory-style with smaller and heavier shafts to help address recurring failures under BIG HP demanding driving conditions.
Every component is carefully selected to provide a robust drivetrain foundation for serious performance builds.
Transmission Configurations and Gear Ratios
The 6XD sequential transmission is available in 4-speed, 5-speed, and 6-speed configurations.
With more than two hundred transmission gear ratios available with the 6XD version, we can help configure the transmission to match your engine’s powerband, tire diameter, final-drive ratio, and intended driving environment.
Approximately 98% of our customers have 6XD design transmission ratios to meet the specific requirements of the clients build once we receive the Configuration sheet, we supply each client.
Our team will work with you to select the appropriate transmission and rear differential gearing for your application.
Clutch Options and Performance Upgrades
The 6XD package can be configured with a suitable OEM-style clutch or upgraded with an aftermarket performance clutch and flywheel packages.
We are world dealers for Tilton, ACT, and RPS clutches and can help you select the right combination based on your power level, driving style, and intended use, and at lower pricing.
Additional options include a load cell/strain gauge and “Xineering” stand-alone gear control unit (GCU) for wide-open-throttle (WOT) and throttle-blip (BLIP) clutch-less shifting functionality, 99% of all clients use this pkg for amazing smooth fast shifting.
These options allow you to further customize the drivetrain to suit your performance goals and control-system requirements.
Technical Specifications
6XD Sequential Transmission
Strongest Standard Sequential in the world rated 1800 ft lbs.
- 6-speed version: 124 lbs.
- 5-speed version: 118 lbs.
- 4-speed version: 112 lbs.
- Transmission gear ratios: More than 200 options available
- Oil capacity: 2 quarts, plus additional capacity for the oil cooler and lines
- Suggested oil: Highly suggested to use “6XD 75/140 FS oil“, we have seen the BEST results with this oil in the past 3 yrs, No pitting, No scuffing, No heat buildup.
- It is highly suggested to use 6XD 75/140 FS oil, In stock $31-quart.
- * 6XD is more likely to stand behind any issues ONLY if our 6XD Oil is used *
*HUGE POWER 6XDX Model*
6XDX Sequential Transmission
Strongest Sequential in the world rated 3000+ ft lbs.- 6-speed version: 156 lbs.
- 5-speed version: 148 lbs.
- 4-speed version: 139 lbs.
- XDX Oil capacity: 2.7 quarts, plus additional capacity for the oil cooler and lines
- Suggested oil: Highly suggested to use “6XD 75/140 FS oil“, we have seen the BEST results with this oil in the past 3 yrs, No pitting, No scuffing, No heat buildup.
- It is highly suggested to use 6XD 75/140 FS oil, In stock $31-quart.
- * 6XD is more likely to stand behind any issues ONLY if our 6XD Oil is used *
What’s Included in the Toyota SUPRA MK4 Installation Kit?
Each 6XD sequential gearbox Toyota SUPRA MK4 package includes the following components:
Transmission and Drivetrain
- 6XD or 6XDX sequential transmission in your choice of 4-speed, 5-speed, or 6-speed configuration, and can have One or multiple Over-Drives or even no OD ratios!
- Custom upgraded Alum 4.00″ diameter aluminum driveshaft, with 1350 hard joints and Mark Williams 1350 Hardened Slip Yoke. Can be used with OEM or Ford 9″ upgraded differential.
- Precision laser cut steel mounting bracket, mandrel bent and includes a poly isolator mount to be installed between trans and rear cross member.
- Steel SFI rated safety bell housing, with integrated TOB mounting holes for Tilton TOB unit.
- 300M transmission input shaft GM 26 spline.
- Standard GM 26-spline input configuration or optional upgraded 29-spline NASCAR-style configuration. 29x Additional cost
Shifter and Electronics
- Two mil-spec wiring harnesses for the gear display and reverse/neutral lockout button, both are plug & play using terminated eyelets for positive and negative posts on build.
- Black anodized Billet gear display with terminated DTM connector.
- Rotating shifter handle with 360-degree adjustment for PERFECT driver positioning.
- Available shifter handle offsets: Straight Carbon or 2-inch, 3-inch, and 5-inch Carbon print.
Oil Cooling and Ventilation
- 16-row transmission oil cooler with -8 AN male fitting.
- One billet vent can for the transmission with -8 AN male fitting.
2027 Package and Options Pricing
6XD Standard Package rated for 1,800 ft-lbs.
6XDX UPGRADED Package rated for 3000 ft-lbs.
$31,200 (6XDX)
Xineering Standalone GCU for WOT/BLIP controls w/o expensive Aftermarket ECU / Works w/ ANY ECU
We are World Dealers for Tilton, ACT and RPS; we can provide better pricing for you than others.
* Discounted pricing / BULK orders (2+) On the same order *
Order Process and Lead Times
Typical Lead Time
Our typical lead time is 2-4 weeks before shipment, provided we have received your completed 6XD configuration sheet and all required order information.
To configure your drivetrain correctly, we require information including:
- Engine specifications and power goals.
- Tire size and relevant vehicle configuration details.
- Driving application. Drifting / Road racing / Street n Strip / Street / Roll Racing
- Transmission and gearing preferences.
- Shipping address and order information.
Accurate information helps us configure your transmission ratios and final-drive gearing to suit your specific build.
Lead times may vary depending on configuration, selected upgrades, and component availability.
Deposit Requirements
A $15,000 deposit is required to secure your order and begin the configuration process.
Available payment methods:
- Credit card: Payment link available; 3 to 4.5% (Amex) processing fees apply.
- ACH transfer: Payment link available; No fees.
- Bank wire transfer: Wire information supplied with invoice; No fees.
Remaining Balance
The remaining balance is due during the week your order is scheduled to ship.
* PLEASE email questions or to place ANY ORDER: 6xdgearbox@gmail.com
6XD has been the “Highest Ranked Customer Service” in the Industry for the past 6 years!
Let us help you configure YOUR 6XD Sequential Toyota SUPRA MK4 Package for ANY desired use!
Whether you are building a high-performance street Toyota SUPRA MK4, a dedicated track car, or a serious competition vehicle, the 6XD sequential package offers an extensive range of transmission ratios, final-drive options, and performance upgrades.
From the 6XD Standard to the upgraded 6XDX package, we can help you select the appropriate transmission, gearing, clutch, and supporting components for your application.
Contact us today to start your 6XD configuration.
Provide your engine specifications, tire size, intended use, and vehicle details, and we’ll help you build a drivetrain package tailored to your goals.
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