Due to overwhelming demand, we’re thrilled to announce that development on our 6-speed sequential transmission is nearly complete. We're now in the final stages, with only the casings and adaptor plates left to finalize for compatibility with a wide range of engine and bellhousing combinations.
Universal Fitment – Designed for Serious Power
This transmission is built for universal application, engineered to handle over 1,200 HP / 1,500 Nm (1,100 ft-lbs) reliably on the circuit. The exceptional power handling is achieved through a large shaft center distance just shy of 3.5 inches, offering unmatched strength.
Our initial fitment focus includes the Nissan Skyline R32/R33/R34 GT-R & GTST platforms. The unit is compatible with the factory automatic bellhousing, retaining the OEM transfer case and shifter location. We've also completed scanning and modeling for other engines, including the LS platform, using Tremec T56 or Quicktime SFI bellhousings with our dedicated adapter plate.
Why Quicktime?
Quicktime offers a huge range of SFI-certified bellhousings, making it easy to adapt our transmission to almost any engine configuration.
🔗 Quicktime Bellhousings
Input Shaft Options
We will offer multiple input shaft spline configurations:
-
24 Spline Nissan – Up to 600 HP
-
26 Spline GM/Ford – 600–1200 HP
-
29 Spline GM – 1200+ HP
All input shafts will be universally long with extended splines. Upon ordering, let us know your engine and bellhousing, and we will machine the input shaft’s nose to suit your pilot bearing/spigot dimensions.
Clutch Compatibility
The front adaptor will be machined to suit the Tilton 8000 Series Hydraulic Release Bearing, enabling easy adaptation to most clutch diaphragm sizes.
🔗 Tilton Hydraulic Bearings
Prefer a different throw-out bearing? No problem – we’ll adapt the unit at no additional cost.
Gear Display & Closed Loop Shifting
A gear display sensor is not included, but the transmission is compatible with the Novotechnik SP2846 Rotary Sensor Potentiometer, enabling closed-loop shifting and gear display integration with AIM, MoTeC, AEM, etc.
-
Gear shifts as fast as 38–40 milliseconds (if tuned correctly)
-
We include mounting hardware – just purchase the sensor separately.
🔗 Novotechnik Sensor Datasheet
High-Quality Design & Construction
-
Billet Chromoly 4140 nitrided shift forks for maximum durability
-
Reinforced cast housings for rigidity and strength
-
Approximate oil capacity: 4L
-
Designed with provisions for external oil coolers and pumps for track use
Fitment Options
Option 1 – GT-R (RB26) Fitment
-
Direct bolt-up to the factory RB26 transfer case
-
Uses our Race Spec Lockout Shifter, with reverse gear engaged via a cable-actuated button from neutral
-
Compatible with OEM Nissan auto bellhousings (RB, SR, VG, VQ)
Option 2 – Universal RWD Fitment
-
Massive compatibility across platforms (LS, JZ, Barra, etc.)
-
Uses 108mm Porsche-style yoke flange with integrated reluctor wheel (ZF Cherry/Speed sensor compatible – sensor not included)
-
Includes 3-position mountable sequential shifter
Included in the Kit
-
Transmission housings (excluding bellhousing)
-
Race-spec sequential shifter (varies by application)
-
Adaptor plate for bellhousing fitment
-
All hardware required for installation
-
Assembly instructions
-
Optional fully assembled transmission (additional cost)
-
Access to our approved global installer network
Ratio Options – Helical Dog Engagement
Gears 1–5:
-
1st – 2.538
-
2nd – 1.8666
-
3rd – 1.5294
-
4th – 1.2631
-
5th – 1.0000
6th (Overdrive):
-
Option A – 0.7000 (long)
-
Option B – 0.8600 (short)
Reverse: 2.9333
Why Helical Dog Engagement?
Helical gears provide greater tooth contact area, higher load capabilities, and smoother, quieter operation compared to straight-cut gears – while still offering ultra-fast dog-style shifts.
Service & Support
-
Ongoing parts availability guaranteed
-
6-month unconditional warranty on all Speedtek-manufactured gearsets
-
Comprehensive global service network
If you're ready to upgrade your vehicle with one of the strongest, most universal sequential transmissions ever built, contact us today to express your interest or secure a pre-order.
*parts only - assembly procedure must be completed by either yourself using our provided instructions or one of our reputable assemblers.