CLEAN SPEED OIL PUMP SPRING — KTM LC8c 790 / 890 / 990
In every KTM 790 / 890 Clean Speed tested, oil pressure after the filter measured only about 30-45 psi with the factory LC8c 2 bar spring. This spring brings it up into the 40-80 psi range — in line with most modern engines with a gerotor oil pump.
It ramps oil pressure quickly from about 45 psi at idle to 65 psi by 2,500 rpm, then holds 70-80 psi from 3,000 rpm to the redline. Higher-rate factory springs (3.5-5 bar) tend to add little pressure at low rpm and spike at high rpm; the Clean Speed spring shifts the whole curve up while keeping a linear load on the pump and oil system — ideal for adventure, road and race use.
FEATURES
- 40-80 psi (2.8-5.5 bar) oil pressure for the KTM LC8c parallel twin
- Sharp increase in oil pressure at low rpm, linear from 3,000 rpm to the redline
- Suitable for adventure, road and race use
- Stress-relieved, premium US-sourced chrome silicon steel — made for continuous high-temperature use
- Designed and made in the USA
- Lifetime warranty from Clean Speed
SPECIFICATIONS
| Oil pressure | 40-80 psi (2.8-5.5 bar) |
| Replaces | Factory LC8c 2 bar oil pump spring |
| Material | Chrome silicon spring steel |
| Guarantee | Lifetime (Clean Speed) |
FITTING TIPS
- The Clean Speed spring is longer than the factory spring and needs more pre-load.
- Use an 8 mm socket to remove the oil pan bolts, then use the same socket to help compress the spring into the oil pump.
- The oil pan gasket is KTM part no. 63530086000 — a formed steel compression gasket. It can be re-used, but Clean Speed recommend replacing it while the pan is off.
VIDEO: OIL PRESSURE TEST
FITMENT
- KTM 790 Duke / 790 Adventure (LC8c) 2018 - current
- KTM 890 Duke / 890 Adventure (LC8c) 2020 - current
- KTM 990 Duke / 990 Adventure (LC8c) 2024 - current
Only for the LC8c parallel-twin engine — not for the older KTM 950 / 990 V-twin (LC8).
