Two-Speed Transfer Case
BASE two-speed transfer case is outperforming its competitors considering optimized and modern shell design, modular gear set structure and lightness driven by aluminum housing.
Two-speed transfer case offers remote and direct mount for transmission families.
Thanks to flexibility offered by BASE Engineering and business model, different ratios can be provided in a basic housing.
Proven in harshest field conditions, BASE two-speed transfer case has been widely used in key vehicles of reputable vehicle manufacturers. (e.g. BMC, Katmerciler)
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| Product Name | TKB-330/10 | TKB-420/10 | TKB-420/20 | TKA-420/10 |
| Drop Distance | 330 mm | 420 mm | 420 mm | 420 mm |
| Gear Low Ratio | 2.8:1 (standard) 2.28 (optional) |
1.054:1 | 0.936:1 | 0.936:1 |
| Gear High Ratio | 5.85:1 | 2.19:1 | 1.922:1 | 1.922:1 |
| Speed Shifting & Interaxle Differential Lock |
Pneumatically Actuated Indicator Switches, %50-%50 Torque Distribution, Capable for manual shifting to neutral mode |
Pneumatically Actuated Indicator Switches, %50-%50 Torque Distribution |
Pneumatically Actuated Indicator Switches, %50-%50 Torque Distribution |
Pneumatically Actuated Indicator Switches, %50-%50 Torque Distribution |
| Output Flanges | Standard KV 120 ISO 8667 |
Standard KV 150 ISO 8667 |
Standard KV 150 KV 180, ISO 8667 |
Standard KV 150 KV 180, ISO 8667 |
| Input Flanges | Direct Mount on Allison 1000 Series Transmission |
Remote & Direct Mount on Allison 3200SP Series Transmission |
Remote & Direct Mount on Allison 3200SP Series Transmission |
Remote & Direct Mount on Allison 3200SP Series Transmission |
| Parking Brake | Double FSG 90 (Ø 260×12.7) |
Double FSG 90 (Ø 340×12.7) |
Optional Double FSG 90 (Ø 340×12.7) |
Optional Double FSG 90 (Ø 340×12.7) |