- Rollers are made from bearing steel (JIS SUJ-2/SAE 52100/DIN 100 Cr6) and have been subjected to heat treatment and precision grinding radius diameter deviation; the hardness is HV700-860 (HRC60-66)
- All the raw material comes from Japan directly
- High-purity Chromium Molybdenum alloy steel (JIS SCM415) with Carbon Nitriding heat-treatment process
- The hardness specification is at HV500~HV600; it always can meet the requirement of high-speed engine applications
- Heat treated and ground to precision tolerances for reduced heat and extended life
| Compatible Vehicles | |||
| Years | Make | Make | Notes |
| 1983-1984 | Yamaha | Enticer 300 ET300 | |
| 1984-1988 | Yamaha | Enticer 340 ET340 | |
| 1984-1988 | Yamaha | Excel III EC340 | |
| 1989-1990 | Yamaha | Ovation LE CS340E | |
| 1992-2000 | Yamaha | Ovation LE CS340E | |