Tomei Technical Trax Advance 1.5-Way LSD Pro Kit - Nissan 350Z / 370Z / 400Z 6MT
TC102B-NSHX1 - Tomei Technical Trax Advance 1.5-Way LSD Pro Kit with 3.9 Final Drive Gear Set
Developed for the Nissan 350Z, 370Z, and Z/400Z with a 6-speed manual transmission and open differential (HX1). This Pro Kit combines Tomei's aggressive mechanical 1.5-way limited-slip differential with a 3.916 final drive gear set to improve traction, rear-wheel-drive control, acceleration response, and shift feel.
Applications
- Nissan 350Z / Z33 — VQ35DE, 6MT, open differential
- Nissan 370Z / Z34 — VQ37VHR, 6MT, open differential
- Nissan Z / 400Z / RZ34 — VR30DDTT, 6MT, open differential
Kit Contents
- Tomei Technical Trax Advance 1.5-way mechanical LSD
- Tomei 3.9 final drive gear set (3.916 ratio)
Features
- High-capacity clutch-disc structure for strong locking performance
- Designed to maximize rear traction in FR sports cars
- Improved drive-force transfer and rear grip at corner exit
- Improved acceleration, straight-line stability, and rear contact feel
- Effective for street, winding-road, grip, and circuit use
- Improved rear control and direct FR driving feel
- Fully machined case for strength, reduced weight, and added internal disc capacity
- Larger-diameter friction discs than the OEM LSD
- 12 discs per side / 24 total, compared with 5 per side / 10 total in the OEM unit
1.5-Way Characteristics
The 1.5-way configuration emphasizes lock under acceleration while remaining easier to control during deceleration than a 2-way LSD. Recommended for street driving, winding roads, circuit driving, and grip driving.
Final Drive Comparison
| Specification | Final Drive | Characteristics |
|---|---|---|
| Nissan factory | 3.538 | Mild gearing focused on highway cruising and fuel economy |
| Tomei Pro Kit | 3.916 | Approximately 10% shorter gearing for stronger acceleration response and more engaging 2nd-to-3rd gear performance |
Nissan OEM 6MT Gear Ratios
| 1st | 2nd | 3rd | 4th | 5th | 6th |
|---|---|---|---|---|---|
| 3.530 | 2.324 | 1.624 | 1.271 | 1.000 | 0.794 |
Cruising / Theoretical Speed Comparison
| Final Drive | Approx. RPM at 100 km/h in 6th | 6th Gear at 7000 RPM |
|---|---|---|
| OEM 3.538 | Approx. 2200 RPM | Approx. 318.6 km/h |
| Tomei 3.916 | Approx. 2430 RPM | Approx. 288.0 km/h |
Specifications
- Part number: TC102B-NSHX1
- Type: 1.5-way mechanical LSD Pro Kit
- Final drive ratio: 3.916
- Shipping size: 15 × 13 × 19 in (37 × 31 × 47 cm)
- Shipping weight: 48 lb (22 kg)
Important Notice
This is a performance mechanical LSD with aggressive characteristics. Operating noise, chattering, and tire dragging may occur during low-speed turns or parking. It may not suit customers who prioritize factory-like quietness or mild operation.
Professional installation by a qualified technician is strongly recommended; specialized tools may be required. Follow all supplied instructions and warning labels. Some performance products may not be legal for public-road use in every area—verify local requirements before purchase and installation. Specifications, appearance, contents, and pricing are subject to manufacturer change without notice.