Tilton’s 7.25″ OT-II cerametallic racing clutches are primarily designed for racing applications where some clutch modulation is desired. They feature 4-paddle discs that incorporate a unique blend of ceramic and metallic materials.
Cerametallic discs are thicker than sintered metallic discs, and they provide higher heat capacity through their increased mass. In addition, the engagement characteristics of cerametallic clutches are smoother than sintered metallic clutches.
These features make Tilton’s 7.25″ OT-II cerametallic racing clutches popular in the following applications:
- Rally Hill climb
- Road racing
- Club racing
- Off-road
- Extreme street/strip
Features
- Open, one-piece clutch cover design. Provides lower operating temperature, higher strength, and minimized deflection for quick shifting.
- Five diaphragm spring rate options.
- Provides a wide range of torque capacities and release loads to tune the clutch for the application.
- Chrome vanadium diaphragm springs and an engineered pressure plate geometry.
- Provides a high clamp load-to-wear ratio, low release load, and quick shifting.
- High-strength steel pressure and floater plates. .283″ thick friction disc.
- Provides excellent wear resistance and withstands elevated temperatures.
- Hardened steel thrust buttons provide a smooth and durable surface for pressure and floater plates.
- Dynamic spin balanced.
- Individually inspected for proper assembly and balance.
Specifications
Plate 1
Weight**: 5.6 lbs / 2.5 kg
M.O.I.**: 52.4 lb-n² / .0154 kg-m²
Spring Colour | Torque Capacity (lb-ft/nm) | Release Load* (lbs/dan) | Pressure Plate Ratio |
White | 200/272 240/326 | 400/180 | High Ultra High |
Buff | 240/326 285/388 | 480/211 | High Ultra High |
Orange | 280/381 335/456 | 560/247 | High Ultra High |
Grey | 280/381 335/456 | 680/299 | High Ultra High |
Double Grey | 380/517 455/619 | 760/334 | High Ultra High |
Tripple Grey | 415/564 | 800/352 | High |
Specifications
Plate 2
Weight**: 8.2 lbs / 3.7 lbs kg
M.O.I.**: 76.3 lb-n² / .225 kg-m²
Spring Colour | Torque Capacity (lb-ft/nm) | Release Load* (lbs/dan) | Pressure Plate Ratio |
White | 400/544 480/652 | 400/180 | High Ultra High |
Buff | 480/652 570/775 | 480/211 | High Ultra High |
Orange | 560/762 670/911 | 560/247 | High Ultra High |
Grey | 680/925 820/115 | 680/299 | High Ultra High |
Double Grey | 760/1034 910/1238 | 760/334 | High Ultra High |
Tripple Grey | 830/1129 | 800/352 | High |
! * Values listed are typical for release bearings with the recommended 44mm contact diameter. Larger contact diameters will increase release load.
! ** Weight and M.O.I. includes a pressure plate, carbon floater plates, carbon discs and steel hub, and may vary based on your particular spline.
- Model: OT-11 CREAMETALLIC